Develop Bugs

LG E975 - No LTE Option

Hello Everyone,
Hopefully this issue can be solved, as I'm using stock Android JB 4.1.2 (E97510h-EUR-XX) on my device and there is no LTE option in:
- System Settings> More...> Mobile Networks> Network Mode
Now, I believe it can be enabled by making a change to persist.radio.lteon as found here:
- https://community.vodafone.ie/t5/Network/Supported-4G-Phones/td-p/137830/page/1
However, it requires root access and as far as I'm aware, there is no root exploit for E97510h-EUR-XX at this time:
- http://forum.xda-developers.com/showthread.php?t=2249033&page=2
- http://forum.xda-developers.com/showthread.php?t=2163814&page=5
Here are my questions:
1. Is there any method to replace or edit persist.radio.lteon without rooting my device?
2. If 1 is not an option, is there any method to successfully root my device?
3. If 2 is possible, can I unroot and will this process be undetectable?
Any help is much appreciated :good:

TheStigOnline said:
Hello Everyone,
Hopefully this issue can be solved, as I'm using stock Android JB 4.1.2 (E97510h-EUR-XX) on my device and there is no LTE option in:
- System Settings> More...> Mobile Networks> Network Mode
Now, I believe it can be enabled by making a change to persist.radio.lteon as found here:
- https://community.vodafone.ie/t5/Network/Supported-4G-Phones/td-p/137830/page/1
However, it requires root access and as far as I'm aware, there is no root exploit for E97510h-EUR-XX at this time:
- http://forum.xda-developers.com/showthread.php?t=2249033&page=2
- http://forum.xda-developers.com/showthread.php?t=2163814&page=5
Here are my questions:
1. Is there any method to replace or edit persist.radio.lteon without rooting my device?
2. If 1 is not an option, is there any method to successfully root my device?
3. If 2 is possible, can I unroot and will this process be undetectable?
Any help is much appreciated :good:
Click to expand...
Click to collapse
fcuk some e975 roms kdzs put back korean stuff and ull be sorted ..

GalaxySIIII said:
fcuk some e975 roms kdzs put back korean stuff and ull be sorted ..
Click to expand...
Click to collapse
Can you be specific please?

TheStigOnline said:
Can you be specific please?
Click to expand...
Click to collapse
dont convert if u have korean mobile .. leave korean software

GalaxySIIII said:
dont convert if u have korean mobile .. leave korean software
Click to expand...
Click to collapse
My device is from the UK and this is not a related issue
Thank you for the tip :good:

TheStigOnline said:
My device is from the UK and this is not a related issue
Thank you for the tip :good:
Click to expand...
Click to collapse
? LG optimus E975 NEVER released in uk only in EU

GalaxySIIII said:
? LG optimus E975 NEVER released in uk only in EU
Click to expand...
Click to collapse
My device was bought Sim Free from a UK company, just last year in fact and I'm not bothered if it was officially released there or not, as I have this epic mobile
Now, lets focus on the software issue, can anyone please answer my questions or suggest a better solution?

TheStigOnline said:
My device was bought Sim Free from a UK company, just last year in fact and I'm not bothered if it was officially released there or not, as I have this epic mobile
Now, lets focus on the software issue, can anyone please answer my questions or suggest a better solution?
Click to expand...
Click to collapse
I put E975 soft and no lte option so i put back korean and lte works
I explained to u simple
Hope it helped..

GalaxySIIII said:
I put E975 soft and no lte option so i put back korean and lte works
I explained to u simple
Hope it helped..
Click to expand...
Click to collapse
He hasn't bought a Korean Optimus G, but an E975. But for some reason if you put a SIM card from one carrier in the phone you cannot choose LTE, but if you put in a SIM from a different carrier you get the option to choose LTE. That's because LG has had the brilliant idea to block LTE for some carriers on an LTE enabled phone.
You can try contacting LG so they release an update so that LTE will be enabled for your carrier, but it would be faster to root your phone and adjust the build.prop like you said in the first post.

jordy1990 said:
He hasn't bought a Korean Optimus G, but an E975. But for some reason if you put a SIM card from one carrier in the phone you cannot choose LTE, but if you put in a SIM from a different carrier you get the option to choose LTE. That's because LG has had the brilliant idea to block LTE for some carriers on an LTE enabled phone.
You can try contacting LG so they release an update so that LTE will be enabled for your carrier, but it would be faster to root your phone and adjust the build.prop like you said in the first post.
Click to expand...
Click to collapse
doesnt matter where mobile is form .. dont u see i bought from korea and europe soft was working but no lte so why he cant put korean onto european ?!?!?! it will still work + with lte enabled ..
contact lg god .. it is not down to them how do u want contact them and yeah they will tell you omg we are sooo sooryy we will correct it for you .. fkin pathetic .. they will crap on u .. man
lg doesn't block nobody .. the carrier needs send u setting .. dont u remember when 3g came up they been sending settings over SMS ? APN settings and MMS settings ? nowdays it is up to carrier send update over network NOT via sms .. and those carriers who has settings ready then 4g doesnt work ..
think.com

Why bother putting Korean software on your European phone and risk having a bad experience (due to the fact that Korean software is guess what optimized for Korean carriers)? When you can just root your device and change the build .prop which is less trouble and less risky to perform than to put a Korean software on it.
But to answer the question of the TS. You can root the E975 10 H firmware. I used Framaroot, and it works fine. You can read all about in the thread FAQ (Freaking Annoying Questions) in the Q and A section.

jordy1990 said:
Why bother putting Korean software on your European phone and risk having a bad experience (due to the fact that Korean software is guess what optimized for Korean carriers)? When you can just root your device and change the build .prop which is less trouble and less risky to perform than to put a Korean software on it.
But to answer the question of the TS. You can root the E975 10 H firmware. I used Framaroot, and it works fine. You can read all about in the thread FAQ (Freaking Annoying Questions) in the Q and A section.
Click to expand...
Click to collapse
risky ? how can be risky .. so people here happily flashing third party roms and that's alright and when try to use original official rom then is risky ????! man are you OK?
optimized for their carriers ? no .. only APPS are included .. and those apps can be easily ignored ..
i think that your buildprop editing is risky .. ordinary people wont be messing with customizing files
wait for carrier till end of march then
I dont need to read nothing for me all working am enjoying LTE(4G) u dont it is your problem what u do ..
do what u want ..

Chill out dude. I'm only trying to help the TS out. He didn't ask anything about flashing a ROM, only to solve his problem with or without root.
Flashing any custom ROM is more risky than rooting a device. As it involves more steps then just rooting. So why make it hard for yourself?
Flashing a Korean ROM would mean flashing a KDZ file (that's the way I changed the E975 10 H back to E975 10 D) and that process probably changes the baseband of your phone(which is not the right one for the E975), so it could definitely influence the experience and battery life, etc.
You say that ordinary people won't mess with the build.prop file but they won't have any problem with flashing a Korean ROM?
BTW: There is no need in quoting the very last post everytime you make a comment, as it is clear what you're replying on.

jordy1990 said:
Chill out dude. I'm only trying to help the TS out. He didn't ask anything about flashing a ROM, only to solve his problem with or without root.
Flashing any custom ROM is more risky than rooting a device. As it involves more steps then just rooting. So why make it hard for yourself?
Flashing a Korean ROM would mean flashing a KDZ file (that's the way I changed the E975 10 H back to E975 10 D) and that process probably changes the baseband of your phone(which is not the right one for the E975), so it could definitely influence the experience and battery life, etc.
You say that ordinary people won't mess with the build.prop file but they won't have any problem with flashing a Korean ROM?
BTW: There is no need in quoting the very last post everytime you make a comment, as it is clear what you're replying on.
Click to expand...
Click to collapse
That quote button has reason to be there .. that is why am using it ... And people know which answer belongs to particular person ..
for me is easy flash kdz ... and then obviously u need to flash modem back .. that is not hard too ..
And u are right in only one thing .. yes when people changing roms flashing then phone drains battery .. yes when I converted to E975 my F180S battery was very very bad .. I flashed original korean back and battery is much much better .
Like I said you can try korean if no leave it and wait for carrier to sort it out .. but they have time tho

No one here recommends to flash korean kdz in international versions nd vice versa too... Try some othr rooting methods nd try to change the build.prop.... Have yu tried moto chopper root method...??
Edit: looks lyk moto chopper method doesn't help yu... Yu cant yu downgrade ur software nd root it....
Sent from my LG-E975 powering Stock 4.1.2

jordy1990 said:
He hasn't bought a Korean Optimus G, but an E975. But for some reason if you put a SIM card from one carrier in the phone you cannot choose LTE, but if you put in a SIM from a different carrier you get the option to choose LTE. That's because LG has had the brilliant idea to block LTE for some carriers on an LTE enabled phone.
You can try contacting LG so they release an update so that LTE will be enabled for your carrier, but it would be faster to root your phone and adjust the build.prop like you said in the first post.
Click to expand...
Click to collapse
This makes sense and I've already contacted LG, they have been useless so far, so will see what they come up with next
jordy1990 said:
Why bother putting Korean software on your European phone and risk having a bad experience (due to the fact that Korean software is guess what optimized for Korean carriers)? When you can just root your device and change the build .prop which is less trouble and less risky to perform than to put a Korean software on it.
But to answer the question of the TS. You can root the E975 10 H firmware. I used Framaroot, and it works fine. You can read all about in the thread FAQ (Freaking Annoying Questions) in the Q and A section.
Click to expand...
Click to collapse
Root is my last option and thank you for your advice :good:

hasan4791 said:
No one here recommends to flash korean kdz in international versions nd vice versa too... Try some othr rooting methods nd try to change the build.prop.... Have yu tried moto chopper root method...??
Edit: looks lyk moto chopper method doesn't help yu... Yu cant yu downgrade ur software nd root it....
Sent from my LG-E975 powering Stock 4.1.2
Click to expand...
Click to collapse
I'll keep this option in mind and thank you :good:

@TheStigOnline where is mine thank you ?

GalaxySIIII said:
@TheStigOnline where is mine thank you ?
Click to expand...
Click to collapse
Post #5

TheStigOnline said:
Post #5
Click to expand...
Click to collapse
thnx:good:

G975U and G975U1 Firmware Links and Flashing Discussion Here

For those who aren't already aware, G975U is the model number of all of the US carrier versions of the S10+. The G975U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader. A "U to U" or "U1 to U1" flash does not require a factory reset, but changing from one firmware to the other will require one. Also, U firmware is identical for the 4 base files (AP, BL, CP, CSC) for each individual build, no matter which carrier it comes from. So if you download 2 different carrier versions of the exact same build, the 4 base files will be identical. Where the firmware differs is in the USERDATA file - that's where the carrier bloatware and customizations reside.
Manual Odin flashing is designed for those who:
- want to manually update to a newer version of U firmware on their U device, either because they don't want to wait for their carrier's OTA or because OTAs aren't working on their device, or a different carrier got a new feature/patch before they did
- want to flash U1 firmware to their U device
- want to convert from U1 firmware to carrier U firmware
- want to convert from one carrier's U firmware (with all apps and bloatware) to a different carrier's U firmware (with all apps and bloatware)
For those who aren't already aware, anyone can now download firmware for almost any Samsung device any time that they want, via the various firmware download tools posted here on XDA like SamFirm or Frija. There are threads and info about them here on XDA so I won't waste time explaining - do a search if you're not already familiar with these tools. But they only provide whatever the latest/newest/current version is - nothing older. I pay for a subscription to a site that gets the official releases (usually) before they hit the firmware download tools, so that's where my files come from.
This is not a "beginner's guide to Odin flashing" -type post/thread, so I won't list basic, step-by-step flashing instructions. My threads are geared towards those who already know what they're doing. If you're new to manually flashing Samsung firmware (or haven't done it in a long time), I recommend you consult one of those "beginner's" guides- there are tons of them here on XDA.
Happy flashing!
U firmware: https://www.androidfilehost.com/?w=files&flid=290649
U1 firmware: https://www.androidfilehost.com/?w=files&flid=290650
Notes:
- I compress extra small for space and bandwith savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc
- I remove the .md5 from each file solely for faster flashing (Odin won't check the file integrity without it). Rest assured, the files are perfectly fine and safe - Odin has a million safechecks built in.
- My naming method for folders is: build - bootloader - Android version
So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.
- HOME CSC file keeps data intact; using the other CSC will wipe data. Any zips with "wipe" in the title do not have a HOME CSC included.
- I have identical threads for the S10e and S10 as well
- the correct procedure for switching from one carrier's firmware to another is given in post #25
- You can get USERDATAs from SamFirm for everything but AT&T and Cricket- those files will never be on SamFirm. So in addition to the 5 piece firmware, I'll try to always upload one USERDATA per bootloader increment for those carriers.
- For identifying USERDATAS, and to know what region/CSC to use in the firmware download tools if you're downloading yourself:
AIO = Cricket (not available via firmware download tools)
ATT = AT&T (not available via firmware download tools)
BST = Boost Mobile
CCT = Xfinity Mobile (Comcast)
CHA = Spectrum Mobile (Charter)
SPR = Sprint
TMB = T-Mobile
TMK = Metro PCS
USC = US Cellular
VZW = Verizon
XAA = U1 firmware

This is looking great, was about to pre-order the T Mobile variant, when I remembered that they disable the (Data) Quick Toggle and I have to fiddle around to turn it off, Well, Not the case with the Unlocked version, at least on my Note 9. Anyways, this will come in handy, thanks!

Willy318is said:
This is looking great, was about to pre-order the T Mobile variant, when I remembered that they disable the (Data) Quick Toggle and I have to fiddle around to turn it off, Well, Not the case with the Unlocked version, at least on my Note 9. Anyways, this will come in handy, thanks!
Click to expand...
Click to collapse
Hopefully One UI stays the same. You're welcome

Good to see and will be a good place to hangout! ?

Loved your dedication to uploads on the 9+! Glad to see you here as well! I preodered my ATT 10+ yesterday. Got my mom and two daughters the 10+ / 10e also. Happy to see you'll be providing firmware for the "E" also!

Build SBA added.
Only CCT, VZW, and SPR USERDTAs (for now), but it can be flashed to any S10+

So I flashed this on my new U1 and went to U firmware. My Wifi didn't work after this. I can't connect to any Wifi network... I will try going back to U1 and see if the issue is fixed. Maybe I have a defective phone?

rocket31337 said:
So I flashed this on my new U1 and went to U firmware. My Wifi didn't work after this. I can't connect to any Wifi network... I will try going back to U1 and see if the issue is fixed. Maybe I have a defective phone?
Click to expand...
Click to collapse
Hmmm that's weird. I'm assuming you wiped?

G975U and G975U1 firmware is now live and downloadable in SamFirm. Getting U1 requires manual entry - Auto will not work. U firmware is up for these carriers:
Xfinity Mobile
Spectrum Mobile
Sprint
T-Mobile
US Cellular
Verizon (have to use Manual entry - Auto will not work)
So going forward, I'll only be adding full builds if I can get them before they hit SamFirm, and only if there isn't build for that month already (eg. I won't add any more February builds since SBA is already up.). I will try to stay up to date on USERDATAs for AT&T and Cricket, since AT&T won't let their firmware be put on SamFirm.

Thank you for this. Just flashed my U1 to TMB SBA for video calling feature.

iBowToAndroid said:
G975U and G975U1 firmware is now live and downloadable in SamFirm. U firmware is up for these carriers:
Xfinity Mobile
Spectrum Mobile
Sprint
T-Mobile
US Cellular
Verizon (have to use Manual entry - Auto will not work)
So going forward, I'll only be adding full builds if I can get them before they hit SamFirm, and only if there isn't build for that month already (eg. I won't add any more February builds since SBA is already up.). I will try to stay up to date on USERDATAs for AT&T and Cricket, since AT&T won't let their firmware be put on SamFirm.
Click to expand...
Click to collapse
Is it? I'm not seeing anything.
http://fota-cloud-dn.ospserver.net/firmware/XAA/SM-G975U1/version.xml

YandereSan said:
Is it? I'm not seeing anything.
http://fota-cloud-dn.ospserver.net/firmware/XAA/SM-G975U1/version.xml
Click to expand...
Click to collapse
Not sure what that link is, but U1 is available via the SamFirm tool. I did forget to mention that you have to use Manual input, so i'll edit that part

iBowToAndroid said:
Not sure what that link is, but U1 is available via the SamFirm tool. I did forget to mention that you have to use Manual input, so i'll edit that part
Click to expand...
Click to collapse
That's for auto download. How'd you get the PDA/CSC/Phone?

YandereSan said:
That's for auto download. How'd you get the PDA/CSC/Phone?
Click to expand...
Click to collapse
Manual input, like I said. You have to type in the builds manually

iBowToAndroid said:
Manual input, like I said. You have to type in the builds manually
Click to expand...
Click to collapse
Yes, I realize that. G975U1UEU1ASAU/G975U1OYM1ASAU/G975U1UEU1ASAU
Where are you pulling the values from? Do you have the physical device?

YandereSan said:
Yes, I realize that. G975U1UEU1ASAU/G975U1OYM1ASAU/G975U1UEU1ASAU
Where are you pulling the values from? Do you have the physical device?
Click to expand...
Click to collapse
No. I'm getting them from the place where I get my firmware files from

I have a question and I hope someone can help me. I just purchased a s10 not the plus. And its unlocked which is great but has three UK branding on boot up ect..,
Is it possible to remove this maybe install another rom via oden? And it wouldn't void warranty or enable a security problem on the phone? Any help would be much appreciated

Guessing ATT is late to the party as usual with no ASAB userdata yet? Doesn't appear they've pushed it yet ?

vimto25 said:
I have a question and I hope someone can help me. I just purchased a s10 not the plus. And its unlocked which is great but has three UK branding on boot up ect..,
Is it possible to remove this maybe install another rom via oden? And it wouldn't void warranty or enable a security problem on the phone? Any help would be much appreciated
Click to expand...
Click to collapse
This thread is for U models (Qualcomm). You need to find a thread about the F models (Exynos).
todd3835 said:
Guessing ATT is late to the party as usual with no ASAB userdata yet? Doesn't appear they've pushed it yet ?
Click to expand...
Click to collapse
Anyone can flash any update - USERDATA isn't required unless you're changing from U1 to U, or from one carrier to another.

iBowToAndroid said:
This thread is for U models (Qualcomm). You need to find a thread about the F models (Exynos).
Anyone can flash any update - USERDATA isn't required unless you're changing from U1 to U, or from one carrier to another.
Click to expand...
Click to collapse
Ah ok. On my S9+ I did some Odin flashing and even though I was on the att release, I wasn't getting OTA's. It was odd. Only way to restore OTA updates was flashing with ATT userdata.
On a side note, ATT has pushed the ASAB update for both the S10+ and the S10E.

How to change CSC region

Hi to all.
Last week I got A50. During first boot of system I didnt inserted SIM card ant it seems that it triggered installing firmware for diferent region. Im located in Serbia but firmware is for Turkey and I have many apps on turkish language without posibility to change language in those apps.
Is any method to change CSC?
Thanks in advance!

Ok, no answer yet. Maybe to precise my question,
Could someone tell me which files I need to use to change my current CSC Turkey to lets say Israel CSC ILO.
I suppose it could be done with Odin but which versions of firmware...
Thanks

Alexxxx1 said:
Ok, no answer yet. Maybe to precise my question,
Could someone tell me which files I need to use to change my current CSC Turkey to lets say Israel CSC ILO.
I suppose it could be done with Odin but which versions of firmware...
Thanks
Click to expand...
Click to collapse
Did you learn how to do?
Sent from my [device_name] using XDA-Developers Legacy app

Nope, Im totaly disapointed in comunity in section for model A50. There is no answers, there is no tutorials, there is no custom roms except two of them, and I will probably sell this phone.
Regards
Sent from my SM-A505F using Tapatalk

you should download https://www.sammobile.com/samsung/galaxy-a50/firmware/SM-A505F/TUR/download/A505FDDU4BTC9/330469/ this version, and use odin to flash it in your phone. Keep the sim in the phone for the process, because with that it will verify you are in turkey.
Although in odin the process may work if you use the HOME_CSC file to keep the data of your phone intact, i would suggest using the other file, because with that you'll have a fresher device

General Found a way to change the CSC on our Fold 4!

Hi guys,
This is not gonna be much info but to let you know it is possible, at a cost.
So I bought an F936N - CSC: KTC (Korean). It came with the KT branding and the nasty bloatware with the extra setting menu for KT.
I was sick of it. I tried Samkey, I tried Samfw frp tool. Nothing worked.
I personally don't care about tripping knox, I don't use Samsung pay, password, or the file vault stuff. I just use google pay (Wallet now)
So I followed this guide:
Change CSC on Samsung Devices (Root)​
Install X-plore File Manager app or any other root browser from the Play Store. [googleplay url=”https://play.google.com/store/apps/details?id=com.lonelycatgames.Xplore”]
Launch the app, go to Root Explorer option and change R/O to R/W.
Navigate to /efs/imei/ folder, edit the CSC code in the mps_code.dat file and save the changes.
Then go to /system/csc/ folder and edit your CSC in the sales_code.dat file. (System/CSC did not exist on my phone. but I did find the file sales_code.dat file within other folders that were named as the CSC such as KTC, SKT, KOO. I deleted all the folders except for KOO.
I just rebooted into download mode and flashed KOO firmware and it worked! No more KT carrier branding crap!
I've yet to try OTA. Not sure if it is no longer working or it is working. I'll wait for an update and see if it picks it up or not.
Update: OTA works
Not sure if we can replace the files from a different vairant such as F936B and flash its firmware... Would that give us the ability to change the phone completely?? Definitely something I am willing to tinker with on my phone but I would need someone to send me the files with an F936B and that person must have their phone rooted.
Cheers!

It can't be done with SamFW Tool v3?

sowed said:
It can't be done with SamFW Tool v3?
Click to expand...
Click to collapse
Yes SamFW works 3.1 works but 3.2 failed not sure if they released v 3.3 yet for samfw

sowed said:
It can't be done with SamFW Tool v3?
Click to expand...
Click to collapse
It did not work on my F936N variant. Maybe it does work on other variants such as F936B

Have you root your phone? Will the camera work properly if rooted?

xiaoxiaokeai said:
Have you root your phone? Will the camera work properly if rooted?
Click to expand...
Click to collapse
Camera won't work if rooted with me...

hkbazzi said:
Hi guys,
This is not gonna be much info but to let you know it is possible, at a cost.
So I bought an F936N - CSC: KTC (Korean). It came with the KT branding and the nasty bloatware with the extra setting menu for KT.
I was sick of it. I tried Samkey, I tried Samfw frp tool. Nothing worked.
I personally don't care about tripping knox, I don't use Samsung pay, password, or the file vault stuff. I just use google pay (Wallet now)
So I followed this guide:
Change CSC on Samsung Devices (Root)​
Install X-plore File Manager app or any other root browser from the Play Store. [googleplay url=”https://play.google.com/store/apps/details?id=com.lonelycatgames.Xplore”]
Launch the app, go to Root Explorer option and change R/O to R/W.
Navigate to /efs/imei/ folder, edit the CSC code in the mps_code.dat file and save the changes.
Then go to /system/csc/ folder and edit your CSC in the sales_code.dat file. (System/CSC did not exist on my phone. but I did find the file sales_code.dat file within other folders that were named as the CSC such as KTC, SKT, KOO. I deleted all the folders except for KOO.
I just rebooted into download mode and flashed KOO firmware and it worked! No more KT carrier branding crap!
I've yet to try OTA. Not sure if it is no longer working or it is working. I'll wait for an update and see if it picks it up or not.
Update: OTA works
Not sure if we can replace the files from a different vairant such as F936B and flash its firmware... Would that give us the ability to change the phone completely?? Definitely something I am willing to tinker with on my phone but I would need someone to send me the files with an F936B and that person must have their phone rooted.
Cheers!
Click to expand...
Click to collapse
you can change the csc with samkey! just disabble/remove all sim cards first from the phone, wifi also. no need for root!!

Do you still have your camera working, after Ruth? Is it possible to get root to do what is necessary and abandon them? In this case, will the camera work?

cristian codrin said:
you can change the csc with samkey! just disabble/remove all sim cards first from the phone, wifi also. no need for root!!
Click to expand...
Click to collapse
Tried every combination you can think of. It does not work with KTC

bashirchik said:
Do you still have your camera working, after Ruth? Is it possible to get root to do what is necessary and abandon them? In this case, will the camera work?
Click to expand...
Click to collapse
Once rooted you are never going to go back to stock. It physically burns a part of the SoC away. Samsung may have workarounds to fix this but no developer has, as yet, found any. It would probably be in the initialisation of the SoC in the factory. Very Low level format stuff...
Simple explanation, once rooted there's no going back even if you flash a stock ROM...

hkbazzi said:
Hi guys,
This is not gonna be much info but to let you know it is possible, at a cost.
So I bought an F936N - CSC: KTC (Korean). It came with the KT branding and the nasty bloatware with the extra setting menu for KT.
I was sick of it. I tried Samkey, I tried Samfw frp tool. Nothing worked.
I personally don't care about tripping knox, I don't use Samsung pay, password, or the file vault stuff. I just use google pay (Wallet now)
So I followed this guide:
Change CSC on Samsung Devices (Root)​
Install X-plore File Manager app or any other root browser from the Play Store. [googleplay url=”https://play.google.com/store/apps/details?id=com.lonelycatgames.Xplore”]
Launch the app, go to Root Explorer option and change R/O to R/W.
Navigate to /efs/imei/ folder, edit the CSC code in the mps_code.dat file and save the changes.
Then go to /system/csc/ folder and edit your CSC in the sales_code.dat file. (System/CSC did not exist on my phone. but I did find the file sales_code.dat file within other folders that were named as the CSC such as KTC, SKT, KOO. I deleted all the folders except for KOO.
I just rebooted into download mode and flashed KOO firmware and it worked! No more KT carrier branding crap!
I've yet to try OTA. Not sure if it is no longer working or it is working. I'll wait for an update and see if it picks it up or not.
Update: OTA works
Not sure if we can replace the files from a different vairant such as F936B and flash its firmware... Would that give us the ability to change the phone completely?? Definitely something I am willing to tinker with on my phone but I would need someone to send me the files with an F936B and that person must have their phone rooted.
Cheers!
Click to expand...
Click to collapse
I cannot find the "sales_code.dat" file in my s21+

hai9997 said:
I cannot find the "sales_code.dat" file in my s21+
Click to expand...
Click to collapse
Hmmm, not sure what you can do here.

I bought this in India which is international device but I can’t use 5G in India it says device is 5G incompatible. Spoke with few people some said flash stock rom to get 5G also paid money to express unlocks they couldn’t do it either is it possible to get 5G on this phone z fold 4 if someone helps me I’m willing to pay them too.
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Legion9955 said:
I bought this in India which is international device but I can’t use 5G in India it says device is 5G incompatible. Spoke with few people some said flash stock rom to get 5G also paid money to express unlocks they couldn’t do it either is it possible to get 5G on this phone z fold 4 if someone helps me I’m willing to pay them too.
View attachment 5853751
Click to expand...
Click to collapse
That is not an international device, F936B. Yours is an F936N device, It is for Korea and for use on their particular networks and not intended for sale by Samsung outside of that area.

[email protected] said:
That is not an international device, F936B. Yours is an F936N device, It is for Korea and for use on their particular networks and not intended for sale by Samsung outside of that area.
Click to expand...
Click to collapse
My local mobile store sold me this saying it’s international device and all the SIM cards works on it including my t mobile from USA only problem is I can’t use 5G on jio india or Airtel india any work around for this ?

Legion9955 said:
My local mobile store sold me this saying it’s international device and all the SIM cards works on it including my t mobile from USA only problem is I can’t use 5G on jio india or Airtel india any work around for this ?
Click to expand...
Click to collapse
Also my phone doesn’t have any branding from carrier.

Legion9955 said:
My local mobile store sold me this saying it’s international device and all the SIM cards works on it including my t mobile from USA only problem is I can’t use 5G on jio india or Airtel india any work around for this ?
Click to expand...
Click to collapse
It is definitely not an international, F936B, device.
The Korean, F936N, device is only compatible with 1 Indian 5G network band, N78 (3500). See screenshot and link...
Will Samsung Galaxy Z Fold4 work in India?
In this page we are going to show you the compatibility of Samsung Galaxy Z Fold4 with the mobile networks of India and with the telephony operators that provide service in India.
www.kimovil.com
You will need to find an Indian carrier that uses the N78 band in your area, if any.

[email protected] said:
It is definitely not an international, F936B, device.
The Korean, F936N, device is only compatible with 1 Indian 5G network band, N78 (3500). See screenshot and link...
View attachment 5853801
Will Samsung Galaxy Z Fold4 work in India?
In this page we are going to show you the compatibility of Samsung Galaxy Z Fold4 with the mobile networks of India and with the telephony operators that provide service in India.
www.kimovil.com
You will need to find an Indian carrier that uses the N78 band in your area, if any.
Click to expand...
Click to collapse
There are 2 carries who support 5G in India is Airtel and jio which supports.
Airtel 5G bands​
Airtel supports the following 5G bands in India –
900 MHz (n8)
1800 MHz (n3)
2100 MHz (n1)
3300 MHz (n78)
26 GHz (n258)
Reliance Jio 5G bands​
Reliance Jio supports the following 5G bands in India –
700 MHz (n28)
3300 MHz (n78)
26 GHz (n58)
is there is any way I can install custom rom or any work around to use 5G

Legion9955 said:
There are 2 carries who support 5G in India is Airtel and jio which supports.
Airtel 5G bands​
Airtel supports the following 5G bands in India –
900 MHz (n8)
1800 MHz (n3)
2100 MHz (n1)
3300 MHz (n78)
26 GHz (n258)
Reliance Jio 5G bands​
Reliance Jio supports the following 5G bands in India –
700 MHz (n28)
3300 MHz (n78)
26 GHz (n58)
is there is any way I can install custom rom or any work around to use 5G
Click to expand...
Click to collapse
You are out of luck as you have already found out. The only way around it would be to get the entire motherboard which has the Korean modem, and replace it with an international, F936B, motherboard and modem. Changing the CSC code or flashing a custom ROM, even if one exists, will not change the devices hardware.
TOP TIP: Always buy the model of device that Samsung intended for use in your location.

Thanks a lot for clarification brother. I think I’m gonna sell it asap!

Question Changing CSC for free using SamFW Tool | No Root required! - A brief guide!

As the title suggests, I was able to successfully change the CSC on my factory unlocked (unbranded) Fold 3 - F926B/DS bought in Germany with OXM firmware having Android 13 & one UI 5.0 from EUX to INU csc using SamFW Tool v3.31 in hardly 2-3 mins. Kindly note that I also looked into other options to do this like Samkey tool (paid service) and alliance shield app (which doesn't work anymore) etc before engaging with the SamFW Tool as none were simple/working with no complications whatsoever involved.
My main objective to change the CSC was to enable call recording and couple of other features (including some pleasant surprises listed in the end of the post) which were available in the INU csc with little to no hassle. The process was pretty simple, straight forward and most importantly, FREE . It DOESN'T require any factory reset, flashing of roms or wiping cache partition before or after the process.
The step by step guide process which worked for me is as follows:
STEP 1: Click here - SamFW Tool Download - to download the latest version of SamFW tool.
STEP 2: Remove the sim card and connect your phone to a computer and make sure the phone's drivers are installed.
STEP 3: Unzip the downloaded file. Right click on the file SamFwFRPTool.exe and 'Run as Administrator'.
STEP 4: After the software opens, make sure your phone is detected before proceeding. If its detected, click on ADB tab in the software.
STEP 5: In your phone, go to developer options and enable 'usb debugging'.
STEP 6: In your phone, open phone dialer and type *#0*# to get into test mode. Leave the phone unlocked and keep it aside now.
STEP 7: Click on 'Change CSC' button in the ADB tab of the tool. Now the tool will connect to your phone, check and list the available CSCs which your phone model supports as shown in the pic attached.
STEP 8: Choose a CSC which you wish to change to from the drop down menu in the pop-up window as shown in the pic attached.
NOTE: The tool also has the option to force the phone to accept a CSC not listed/supported as well by manually entering the same. However, I would not recommend doing it if you really wish to get OTA updates and also to evade any unforeseen issues. I must admit, I haven't frankly tried this and do not know what lies in the pandora box to be honest.
STEP 9: After choosing the CSC from the drop down, the tool quickly connects to the phone, changes the CSC and restarts the phone.
STEP 10: After the phone restarts, unlock the phone using your pin/password, insert your simcard, check the change of CSC in software information, disconnect the phone from the computer and also disable the 'usb debugging' in the developer options.
That's it! All done. Phone restarts with the new chosen CSC and the related features will now be active!
BONUS: There is also an option in the ADB tab in the SamFW Tool named 'Battery information' which gives the complete information of the battery status including the 'charge/discharge cycles' along with its temperature, voltage etc. like in the pic attached. Do note that the information shown in the 'Genuine battery' section isn't correct for some reason and always shows as 'NO' for any phone with/without genuine battery.
With my choice of INU csc the following major changes/surprises were noticed over the EUX:
1. Call recording and a couple of other INU specific features are now enabled (google for more info on what csc enables what features).
2. Not sure why but Battery backup has increased significantly after the csc change to INU. SOT (Screen On Time) which has fallen to 3-4 hrs after the OTA update to One Ui 5.0 & Android 13 is now back to 5-7hrs or more.
3. RAM management has definitely got better. With EUX csc it used be around 5-6GB during standby and now its always around 3-4GB when the phone is idle.
4. Instead of 4G or 4G+, now it shows LTE and LTE+.
5. Mobile data speed has increased both in 5G (Jio True5G network) and in LTE+ when compared to EUX CSC.
6. 5G signal strength has improved drastically. Signal loss or switching to 4G+/LTE+ is very low now.
7. 5G to 4G/LTE switching while calls (VoLTE/VoNR) is more seamless now. Latching back onto 5G network after a call is a breeze now unlike earlier with EUX csc.
8. Phone definitely got faster for some reason. Can very much feel the difference when switching between apps, multi-tasking, even opening/closing apps and other day-to-day tasks.
etc...
Haven't tested whether the OTA updates will still get pushed after the change in CSC yet, as my phone is already updated to the latest patch as I write this. Should absolutely work IMO as long as we choose a CSC which the phone supports but in any case will update the thread once the next update via OTA is available/pushed by Samsung.
Disclaimer: Please be informed that all the above information is purely based on experience of using the tool for changing CSC only which worked well for me with my Fold 3. Cannot take responsibility if it doesn't work for you.

Does it work for Fold 4. Want to change CSC from Korean Region to INU (India). Please guide

Sorry, haven't tried it on Fold 4. Logically it shud work, I guess. There is no harm in connecting n checking what CSCs does ur model supports using the tool IMO.

Tried out but it does not work. It shows only the Korean csc. Even that seems to be not changing

Oh k. I think the tool works, else u wudnt b seeing the CSC which ur phone supports.
I have checked sources in the web as well on this and looks like Fold 3 or 4 with Korean CSC supports only CSC from Korea.
I guess u can still force a CSC on to it replacing the Korean one but thats too risky as u will b missing OTA updates and im not aure wat all things it will mess up.

Awesome! It works and it doesn't wipe the device. I just switched from G975U VZW to CCT without any issues.

BlueTR said:
Awesome! It works and it doesn't wipe the device. I just switched from G975U VZW to CCT without any issues.
Click to expand...
Click to collapse
Happy to hear that. BTW I also got samsung pay/wallet to work as well by installing its apk file today after changing the system language to a local one specific to the changed CSC i.e., English (India) for INU CSC in my case.

I confirm that it is working on a stock android 13! Great tool!
(It worked on the second try though )

Has anyone tired it on a Fold 4, Mine is XAA and I want to convert it to INU. Haven't been abe to do it as yet.
Let me know if someone finds a way, mine is a US version and I want to convert it to the India CSU.
Thanks in advance

unexpected0ne said:
I confirm that it is working on a stock android 13! Great tool!
(It worked on the second try though )
Click to expand...
Click to collapse
Good to know! Just out of curiosity, u tried this on a Fold 3 or Fold 4?

srikanth.addala said:
Good to know! Just out of curiosity, u tried this on a Fold 3 or Fold 4?
Click to expand...
Click to collapse
Fold 3, latest official android 13

unexpected0ne said:
Fold 3, latest official android 13
Click to expand...
Click to collapse
Oh great. Getting otas after the change?

Does OTA work after change?

Hello, can somebody please briefly summerise the options for switching the CSC/Firmware?
I read other threads and this one and now am confused which method actually would work for me.
My situation: i have a Samsung A52s 5G purchased from Deutsche Telekom in Germany, sold separately, not bundled with a contract.
And i am having a contract with a different carrier on a different network, but a german SIM card.
My phone is configured all english, and i need to keep that.
Because of assumed network optimisations and the problem of delayed updates of "branded" phones, i would like to convert the phone from the current CSC of DTM to the DBT using fimrware (A528BXXS1DVL2/A528BOXM1DVK5/A528BXXU1DVK5/A528BXXS1DVL2), which i hope would link me to updates directly provided by Samsung.
I found "https://forum.xda-developers.com/t/...official-firmware-all-samsung-device.2697238/" and "https://forum.xda-developers.com/t/...-multi-csc-codes.4436853/page-5#post-87485577 ", but i am not sure whther the methods described there only apply for UPDATING (within the same CSC) the phone with non-OTA methods, or whether that also covers SWITCHING the CSC?
In the end i have two questions:
1) So far i believed that "simply" putting an official stock Samsung firmware (multi CSC in my case, containing the DBT, but apparently NOT containing the DTM) would bring me there.
But then i read that this might not be suffficient. Instead i also would have to switch the CSC in my Phone's config, which apparently would require purchasing a license for a Samkey unlock code.
Because otherwise i would not receive any OTA updates once i switched just the firmware.
Is that actually true?
I would prefer not to have to buy a Samkey...
And to make the confusion even bigger: now i read, SamFw Tool would also be an option?
But: is that trustworthy? And: from posts of some of you: this might even obsolete to switch the firmware, do i understand that right?
2) If switching firmware still is required: would using Odin/Heimdall be the only option to switch the firmware, or would adb sideloading do the same job as well? I am asking because i don't have access to a windows machine.
Would be so great if someone of you could untangle my confusion a bit, thank you.

MarkoParkovic said:
Does OTA work after change?
Click to expand...
Click to collapse
Did not automatically receive the OTA updates with the recent DVL9 update. However, tried a work around to change the CSC back to EUX via the same tool (which is a 2 min task) to check if I can get OTA again.
And yes it worked! immediately after changing the OTA to its home CSC, was able to see OTA in the updates section of the phone. So, I updated the phone to the latest version (DVL9) and then changed the CSC back to INU after the update . All is well and quick! .

very nice i changed sfr to tur but netflix and always on display app not shown google play so unsupported why idk

burc ugur said:
very nice i changed sfr to tur but netflix and always on display app not shown google play so unsupported why idk
Click to expand...
Click to collapse
May be TUR csc has restricted options/features. In my example after I changed to INU csc (India one) all the India related options got automatically activated like call recording, spam filter, samsung pay using cards etc etc. which weren't available with the EUX csc before the change.

srikanth.addala said:
May be TUR csc has restricted options/features. In my example after I changed to INU csc (India one) all the India related options got automatically activated like call recording, spam filter, samsung pay using cards etc etc. which weren't available with the EUX csc before the change.
Click to expand...
Click to collapse
Any potential issues using INU csc in the UK? I use Samsung pay already but native call recoding would be really useful for me

srikanth.addala said:
May be TUR csc has restricted options/features. In my example after I changed to INU csc (India one) all the India related options got automatically activated like call recording, spam filter, samsung pay using cards etc etc. which weren't available with the EUX csc before the change.
Click to expand...
Click to collapse
edit: excuse me you have play protect certificate? i changed csc samfw topl but now i don't have play protect certificate. Therefore not shown Netflix.
you have this? if you have how can i fix certificate.

burc ugur said:
edit: excuse me you have play protect certificate? i changed csc samfw topl but now i don't have play protect certificate. Therefore not shown Netflix.
you have this? if you have how can i fix certificate.
Click to expand...
Click to collapse
Might be worth clearing cache and data from Google play services see if that helps. Having the same device with 2 different cscs might have confused Google
Edit
Any reason your Google play store is out of date or is it connected to your original issue