Can anyone help I want to flash SM-G988B older official rom to go back to UI 2.1 - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

As title suggests I'm not happy at all with UI 2.5 which has destroyed my battery and SoT and lost some other features I really liked for my SM-G988B S20 Ultra Exynos model .
Can anyone help with the latest official f/w for UI 2.1 built number code to download it and flash it from Sammobile?
Thanks in advance for any help

orbitech said:
As title suggests I'm not happy at all with UI 2.5 which has destroyed my battery and SoT and lost some other features I really liked for my SM-G988B S20 Ultra Exynos model .
Can anyone help with the latest official f/w for UI 2.1 built number code to download it and flash it from Sammobile?
Thanks in advance for any help
Click to expand...
Click to collapse
Only if u search for original rom on sammobile and flash through odin. Good luck

I searched the archive I think the latest with UI 2.1 was the G988BXXS4ATGB/G988BOXM4ATGB with security patch 2020-08-01.. Can anyone confirm?

orbitech said:
I searched the archive I think the latest with UI 2.1 was the G988BXXS4ATGB/G988BOXM4ATGB with security patch 2020-08-01.. Can anyone confirm?
Click to expand...
Click to collapse
You can't downgrade bootloader (bl). It's a mission impossible.
So I think that it won't work.

Please let me know if you are able to downgrade to one ui 2.1

blixer said:
You can't downgrade bootloader (bl). It's a mission impossible.
So I think that it won't work.
Click to expand...
Click to collapse
That firmware is bootloader v4 and I don't think there is any v5 yet is there? So it should work fine

blixer said:
You can't downgrade bootloader (bl). It's a mission impossible.
So I think that it won't work.
Click to expand...
Click to collapse
Sohag0910 said:
Please let me know if you are able to downgrade to one ui 2.1
Click to expand...
Click to collapse
*Detection* said:
That firmware is bootloader v4 and I don't think there is any v5 yet is there? So it should work fine
Click to expand...
Click to collapse
It is v4 and it worked just fine without triggering the knox.. Did a smart switch & samsung account backup before I downgrade at the version I mentioned (latest before UI 2.5 that is) and everything works just fine. I already feel the difference in battery life.. /sigh
Will probably stay here until UI 3.0 if I don't see any other important feature added. Only some camera features I'll miss but battery is the most important thing and I'm not willing to sacrifice an hour or two of SoT for UI 2.5
Thanks all for your help

orbitech said:
It is v4 and it worked just fine without triggering the knox.. Did a smart switch & samsung account backup before I downgrade at the version I mentioned (latest before UI 2.5 that is) and everything works just fine. I already feel the difference in battery life.. /sigh
Will probably stay here until UI 3.0 if I don't see any other important feature added. Only some camera features I'll miss but battery is the most important thing and I'm not willing to sacrifice an hour or two of SoT for UI 2.5
Thanks all for your help
Click to expand...
Click to collapse
How on earth you downgraded from UI 2.5 to UI 2.1. Did you flash without unlocking boot loader or without. i have been trying for so many times in Odin and have been stuck on vbmeta.img in the log. many said its impossible
right now i am at
Version One UI 2.5
2020-08-20 update
10
PDA G980FXXU4BTH5
CSC G980FOXM4BTH5
I need to revert back to
Version UI 2.1
2020-07-22 update
10
PDA G980FXXU3ATG4
CSC G980FOXM3ATG4
i am on indian s20 exynos. which firmware exactly you used to revert back,please help me out, which build i must use. i go into download mode in phone connect to pc, start odin load all the files and start but it gets stuck at vbmeta.img. on turning on the phone nothing is changed

CtrlU said:
How on earth you downgraded from UI 2.5 to UI 2.1. Did you flash without unlocking boot loader or without. i have been trying for so many times in Odin and have been stuck on vbmeta.img in the log. many said its impossible
right now i am at
Version One UI 2.5
2020-08-20 update
10
PDA G980FXXU4BTH5
CSC G980FOXM4BTH5
I need to revert back to
Version UI 2.1
2020-07-22 update
10
PDA G980FXXU3ATG4
CSC G980FOXM3ATG4
i am on indian s20 exynos. which firmware exactly you used to revert back,please help me out, which build i must use. i go into download mode in phone connect to pc, start odin load all the files and start but it gets stuck at vbmeta.img. on turning on the phone nothing is changed
Click to expand...
Click to collapse
I used G988BXXS4ATGB/G988BOXM4ATGB (EUR for GR) with security patch 2020-08-01 as I previously mentioned and it didn't stuck at anything.. Passed w/o triggering the knox of course and works like a charm.
Already feel the difference in battery life as I mentioned. Used the standard flash procedure I changed nothing

Related

new firmware G928IDVU1AOH2 Android 5.1.1 lollipop

G928IDVU1AOH2 Android 5.1.1 lollipop Official firmware Released today in VAU Australia (vodafone)
http://best-tech-reviews.com/update-sm-g928i-g928idvu1aoh2-android-5-1-1-7795/
Damn....I want to flash this so much on my tmobile (us) version :silly:
Is it possible to do that? I'm in the same boat.
I'm not very familiar with samsung modding, unfortunately
SolarTrans said:
Is it possible to do that? I'm in the same boat.
I'm not very familiar with samsung modding, unfortunately
Click to expand...
Click to collapse
Yes it's possible but we need to flash on top our (tmobile) kernel.
I also can't find our tmobile frimeware tar (for odin in case of bootloop)
Damn....booooooring
Hmm I'm downloading the TMO firmware from SamsungUpdate to start, but it's gonna take another 6 hours because of their metered connection -_-.
We'll see how that works out, but ideally I'd be 100% debloated and rooted with Samsung Pay working.
Don't think that'll be possible, but at least we're dealing with unlocked bootloader devices haha
SolarTrans said:
Hmm I'm downloading the TMO firmware from SamsungUpdate to start, but it's gonna take another 6 hours because of their metered connection -_-.
We'll see how that works out, but ideally I'd be 100% debloated and rooted with Samsung Pay working.
Don't think that'll be possible, but at least we're dealing with unlocked bootloader devices haha
Click to expand...
Click to collapse
where did you get the update from?
@Jduncan312
http://samsung-firmware.org/download/SM-G928T/i70w/TMB/G928TUVU1AOGD/G928TTMB1AOGD/
hello
any lucks for the SM-G928C ?
My edge plus is already on 5.1.1 - why the desire to download the same version of firmware from another country? Maybe I'm missing something...
That's not new
Guys, the phone is running great!
Updating for the sake of updating isn't always a good thing when out of the box it's actually working well!
When a device has problems there are threads everywhere of complaints. When a device works things are quiet usually with just the usual how to question. Of course everyone wants root, when it comes it comes. Be patient!
codee said:
My edge plus is already on 5.1.1 - why the desire to download the same version of firmware from another country? Maybe I'm missing something...
Click to expand...
Click to collapse
I do not believe you have to do anything.
While yes, both are version 5.1.1, if you look at the last 4 digits of your firmware build number you should see AOGD. The new firmware build number ends in AOH2, showing this is a newer build date. Nothing major, probably just a few under the hood changes, which usually means a liitle better performance.
http://forum.xda-developers.com/galaxy-nexus/general/help-understand-android-build-t1655863
crowlaw said:
While yes, both are version 5.1.1, if you look at the last 4 digits of your firmware build number you should see AOGD. The new firmware build number ends in AOH2, showing this is a newer build date. Nothing major, probably just a few under the hood changes, which usually means a liitle better performance.
http://forum.xda-developers.com/galaxy-nexus/general/help-understand-android-build-t1655863
Click to expand...
Click to collapse
what about the root-ability?
If you are rooted on an older firmware, and you flash a stock rom via Odin you will lose your root access. So long as your phone model can be/is rooted on your current firmware, after you flash the newer firmware just follow the same steps to root your phone again.
crowlaw said:
If you are rooted on an older firmware, and you flash a stock rom via Odin you will lose your root access. So long as your phone model can be/is rooted on your current firmware, after you flash the newer firmware just follow the same steps to root your phone again.
Click to expand...
Click to collapse
any differences between the OS Firmware, Build Number, or Baseband?

[ROM] Stock ROM Elephone P9000_Android_6.0_20160401_Beta

Stock ROM Elephone P90000_Android_6.0_20160401 (Beta)
Download - https://mega.nz/#!w4BBnKaR!_WU3BeucmEURhgo8VpvspHMVZngL7ctzd29mx6cn2BQ
XDA:DevDB Information
[ROM] Stock ROM Elephone P9000_Android_6.0_20160401_Beta, ROM for the Elephone P9000
Contributors
Jonny
ROM OS Version: 6.0.x Marshmallow
Based On: AOSP
Version Information
Status: Beta
Current Beta Version: 20160401
Beta Release Date: 2016-04-04
Created 2016-04-19
Last Updated 2016-04-19
Has someone give this Beta a try?
Trying now, just be aware that flashing WILL completely wipe your phone again... Everything is gone...
Seriously though, how hard is it to NOT wipe everything like, oh i don't know, every other phone out there...
There is not much difference between this and the last OTA update, I have found the fingerprint sensor a little better but even the security patch level says 1 March 2016... Can't say anything about battery life yet, I find it usually takes 3 days for that to settle but I really haven't seen much difference in UI or settings. Most changes must be "under the hood" so to speak... Doesn't help there's no changelog...
Found the case doesn't seem to register being closed easily so it just leaves the phone on even though I have the original case that has the screen cutout for clock and whatnot.
Keyboard still doesn't support swype...
ultramag69 said:
Trying now, just be aware that flashing WILL completely wipe your phone again... Everything is gone...
Seriously though, how hard is it to NOT wipe everything like, oh i don't know, every other phone out there...
There is not much difference between this and the last OTA update, I have found the fingerprint sensor a little better but even the security patch level says 1 March 2016... Can't say anything about battery life yet, I find it usually takes 3 days for that to settle but I really haven't seen much difference in UI or settings. Most changes must be "under the hood" so to speak... Doesn't help there's no changelog...
Found the case doesn't seem to register being closed easily so it just leaves the phone on even though I have the original case that has the screen cutout for clock and whatnot.
Keyboard still doesn't support swype...
Click to expand...
Click to collapse
Untick the userdata.img if you don't want your data to be wiped.
racer290 said:
Has someone give this Beta a try?
Click to expand...
Click to collapse
Been running this for a number of days now, not run into any problems except it was slightly more difficult to root, lot of trial and error but I'm going to post a tutorial on how I rooted it later today.
Jonny said:
Been running this for a number of days now, not run into any problems except it was slightly more difficult to root, lot of trial and error but I'm going to post a tutorial on how I rooted it later today.
Click to expand...
Click to collapse
Correction, someone has already posted the method here >>> http://forum.xda-developers.com/elephone-p9000/how-to/how-to-root-elephone-9000-stock-rom-t3359315
The tutorial in the link above works for this firmware version as well.... could have saved myself a lot of time if I'd read that first lol. For convenience I've put all the files needed in a zip file (link below). Just use SP Flash Tool to flash the recovery, then flash the 2 other zip files from TWRP
ZIP File >>> https://mega.nz/#!IlgxgDhS!r6_OpFYLVv07o025ecJ9rDul2db1KMsoWAlZbabWMxI
trying to flash this but SPTools (5.1520.00) giving me "Error: Initializing scatter file failed. Please check the name of the scatter file which you load is legal" any ideas as to why? I have tried the other rom listed that isn't the BETA and get the same error...
Also, I don't appear to have the Allinone.bin file for the DownloadAgent, can someone please share that too me?
Thanks
Ignore that, I seem to have got it working.
Where do you get these ROMS from? I'm looking for rom version 20160318 for the p9000 lite.
karl0ss said:
trying to flash this but SPTools (5.1520.00) giving me "Error: Initializing scatter file failed. Please check the name of the scatter file which you load is legal" any ideas as to why? I have tried the other rom listed that isn't the BETA and get the same error...
Also, I don't appear to have the Allinone.bin file for the DownloadAgent, can someone please share that too me?
Thanks
Ignore that, I seem to have got it working.
Click to expand...
Click to collapse
use ever latest sp flashtool!
5.1604 or newer for Android 6 and P10 chipset
megthebest said:
use ever latest sp flashtool!
5.1604 or newer for Android 6 and P10 chipset
Click to expand...
Click to collapse
I could only get 5.1604 working, 5.1612 wouldn't work for me at all on Windows 10 in VirtualBox.
This is officiel or not ? and GPS work for you on this rom ? is it based on 20160315 ?
Bradco said:
This is officiel or not ? and GPS work for you on this rom ? is it based on 20160315 ?
Click to expand...
Click to collapse
please read.. is not based on 20160315 .. is a new stock rom 1st of April.. but still in beta stage..
I hear about a new OTA here http://forum.xda-developers.com/elephone-p9000/help/ota-update20160319-t3364691
megthebest said:
please read.. is not based on 20160315 .. is a new stock rom 1st of April.. but still in beta stage..
I hear about a new OTA here http://forum.xda-developers.com/elephone-p9000/help/ota-update20160319-t3364691
Click to expand...
Click to collapse
Ok thanks

Downgrade Android 7.0 a 6.0.1 Galaxy S6 Edge+ (G928F)

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Sorry but what are you on about? Android 7.0 hasn't even been released for this device yet....
This is all well and good but as stated by Alex Android 7 isn't out for S6 edge + yet. And I'm pretty sure when it does come out it will change the boot loader and reverting back to 6.0.1 will cause imei and baseband loss.
Alex---1 said:
Sorry but what are you on about? Android 7.0 hasn't even been released for this device yet....
Click to expand...
Click to collapse
If it came out but not officially since the rom filter is that of developers
kdogguk said:
This is all well and good but as stated by Alex Android 7 isn't out for S6 edge + yet. And I'm pretty sure when it does come out it will change the boot loader and reverting back to 6.0.1 will cause imei and baseband loss.
Click to expand...
Click to collapse
I was on Nougat multiple times (Khongloi S7 port ROM and DevBase 7.0 ROM modifications), returning to MM was as easy as going to TWRP and flashing a MM ROM, without any bootloader business involved... In my case I simply flashed the V15 Note 7 port by Khongloi, and I was back on MM without any bugs or problems. And if you didn't notice, the firmware in this guide includes a bootloader, so even in the case of the bootloader changing with Nougat, there would be no issue reverting back. I've downgraded my Note 4 from Marshmallow to Kitkat multiple times (for testing purposes), and it's as easy as doing the same steps that are provided in this guide
Go down to the development section, you can see that there are multiple Nougat ROMs that exist for this device already, all based on a leaked base ROM that was meant for app developers. The ROM is nowhere near to finished, it drains battery and the performance is poor, and for that reason many users will consider downgrading, and this thread works for that purpose
galaxyYtester said:
The ROM is nowhere near to finished, it drains battery and the performance is poor
Click to expand...
Click to collapse
You must be living in some alternate reality.
0rigin said:
You must be living in some alternate reality.
Click to expand...
Click to collapse
No, the performance and battery life ratio really is worse in the ROM, it doesn't benchmark even close to stock MM and battery drains fast on some occasions
galaxyYtester said:
I was on Nougat multiple times (Khongloi S7 port ROM and DevBase 7.0 ROM modifications), returning to MM was as easy as going to TWRP and flashing a MM ROM, without any bootloader business involved... In my case I simply flashed the V15 Note 7 port by Khongloi, and I was back on MM without any bugs or problems. And if you didn't notice, the firmware in this guide includes a bootloader, so even in the case of the bootloader changing with Nougat, there would be no issue reverting back. I've downgraded my Note 4 from Marshmallow to Kitkat multiple times (for testing purposes), and it's as easy as doing the same steps that are provided in this guide
Go down to the development section, you can see that there are multiple Nougat ROMs that exist for this device already, all based on a leaked base ROM that was meant for app developers. The ROM is nowhere near to finished, it drains battery and the performance is poor, and for that reason many users will consider downgrading, and this thread works for that purpose
Click to expand...
Click to collapse
This might be due to the fact that they are ports of 7.0.
Im just warning people that update to official when it comes out that it has been known that it updates files that once done cannot be reverted back or it will cause problems, one being the null baseband/imei.
But yes, reverting back at the moment is as easy as flashing a 6.0.1 rom or stock firmware.
Either way hopefully people back up their efs!
i updated to an official 7.0 firmware and now i can't flash 6.0.1 bootloader. Any ideas or am i stuck at 7.0?
kdogguk said:
This is all well and good but as stated by Alex Android 7 isn't out for S6 edge + yet. And I'm pretty sure when it does come out it will change the boot loader and reverting back to 6.0.1 will cause imei and baseband loss.
Click to expand...
Click to collapse
hello
is there any way to avoid this baseband and imei issue or to downgrade BL?
game.gallery said:
hello
is there any way to avoid this baseband and imei issue or to downgrade BL?
Click to expand...
Click to collapse
Well hopefully people will back up their EFS which is a MUST do before starting to flash roms etc.
If you have I think you can use odin to go back to 6.0.1 and then restore the backed up EFS from that version of Android.
Other than that you're stuck on nougat roms.
If you have reverted back to older and you lose imei and/or baseband then you'll need to reinstall nougat rom to get the imei/baseband back.
But as I haven't flashed an official nougat rom I can't say if this will all work or not. I'm going by past experience when I did this with jellybean - kitkat on my old phone.
kdogguk said:
Well hopefully people will back up their EFS which is a MUST do before starting to flash roms etc.
If you have I think you can use odin to go back to 6.0.1 and then restore the backed up EFS from that version of Android.
Other than that you're stuck on nougat roms.
If you have reverted back to older and you lose imei and/or baseband then you'll need to reinstall nougat rom to get the imei/baseband back.
But as I haven't flashed an official nougat rom I can't say if this will all work or not. I'm going by past experience when I did this with jellybean - kitkat on my old phone.
Click to expand...
Click to collapse
thanks for reply.
but the one that i have was officially bought with nougat
Do you know where to get pit file for SM-G928G?

Galaxy a7 2017

There are many custom ROM for A5 and A3 but unfortunately no buddy comes with A7 2017
Very big strange
I am also wondering this. Seems like no one love A7 here.
Not exactly.
zoya4u said:
There are many custom ROM for A5 and A3 but unfortunately no buddy comes with A7 2017
Very big strange
Click to expand...
Click to collapse
There are a few custom ROMs for A7 2017 32GB model (A720F), you can find them here on XDA.
But I suggest care, there's talk the latest official firmware version blocks customization...
TWRP for example will cause a system lock and your phone can end up a nice paperweight (brick).
Also, don't block OEM RESET (always Allow Oem Reset in Developer options) if you use root / customs.
Samsung security may get you a FRP LOCK should you want to reflash.
Odin won't help if you need to downgrade to an older version (like a backup).
Fixes for such a situation are difficult at the moment.
I'm facing it right now and don't know if my phone will be back up and running again
ODIN'd a Stock Recovery and CP ROM, let's see in some hours!
Dan.911 said:
There are a few custom ROMs for A7 2017 32GB model (A720F), you can find them here on XDA.
But I suggest care, there's talk the latest official firmware version blocks customization...
TWRP for example will cause a system lock and your phone can end up a nice paperweight (brick).
Also, don't block OEM RESET (always Allow Oem Reset in Developer options) if you use root / customs.
Samsung security may get you a FRP LOCK should you want to reflash.
Odin won't help if you need to downgrade to an older version (like a backup).
Fixes for such a situation are difficult at the moment.
I'm facing it right now and don't know if my phone will be back up and running again
ODIN'd a Stock Recovery and CP ROM, let's see in some hours!
Click to expand...
Click to collapse
Hummm!
Current situation: FRP lock.
Phone won't get off the boot logo (white screen, "Powered by Android") and FRP/OEM lock are in effect.
I relly shouldn't have fiddle with the new "Directional Lock" feature - Wich can't be disabled, btw.
For anyone in the same situation, pc tricks zone has some remedy but not for A720 at the moment.
I should also point that tutorial videos show an anti-virus alert they claim to be a false positive, but I don't know
- Can't be sure for I didn't try it, but one can't be too cautious. The tool (ADB enabler for FRP) was clean here, says Avira.
But I'm still stuck with ADB/sideload disabled, the stock ROM I found on updato is in ZIP format, useless for ODIN and ADB-e.
ROM files can't simply be converted from ZIP to TAR, they must be cooked - With a "kitchen" tool and a lot of proper knowledge that I, a simple noob/leecher, don't have.
So until finding a TAR file for stock Android 7 (Rev 2) I'm denied access to my US$400 phone just cause Samsung says so.
[A little rant, if I may]
Thanks Samsung will (greed) to enter the digital payment market and enforce security, I, a simple home user who likes the cool mods, debloated systems, freedom and privacy of a custom ROM, (not to mention A720 camera software sucks,) am locked out of my (theirs?) phone. Not buying Sammy again...
Have 2 ROMS for A7 2017 elite stock and experience nougat, all ROMS is bad. stock is more fast lol
I guess there're a couple more:
Diegocbv111 said:
Have 2 ROMS for A7 2017 elite stock and experience nougat, all ROMS is bad. stock is more fast lol
Click to expand...
Click to collapse
Right, Elite was first I saw a few months back. Not much custom, just stock with a few adjustments,
but thanks the guy who gave us at least that.
Considering A7 is the worst snapper phone I saw so far and it is not even mentioned in Samsung's USA support site,
nobody will care to develop, I guess.
The A7 is dead. Hello chimium (chinese cheap premium)?

Question Can we downgrade from one ui 4.1 to 3.1 on a52s 5g ?

Can we revert back from oneui 4.1 to 3.1 on a52s 5g using odin safely without any issue ?
Yes
Arobase40 said:
I confirm this is possible as I did it at least twice when I was creating my rooting guide.
But I still don't understand why you want to do this as you will remain with a very old security patch and as One UI 4.1 is very good....
Click to expand...
Click to collapse
plsss tell us how i have sm-a515f on one ui 4.1 and wanna go back to one ui 2.. download mode give error of unsupported rom and unofficial type of thing\
See: https://samfw.com/blog/what-is-bit-binary-value
The value of the new rom has to be the same or higher than the current one, else flashing will fail.
Arobase40 said:
In fact, there is a misunderstanding in your explanation or partial explanation as if the bit value is higher than the current one then this is an upgrade and not a downgrade...
Click to expand...
Click to collapse
Yeah I know, figured its a small topic anyways, doesnt hurt to know the general principle..
I was able to downgrade from Android 12 to Android 11 with no trouble. I used the non home csc. First thing though make sure your boot loader is locked for the initial installation of 11 just be safe.
bobfrantic said:
I was able to downgrade from Android 12 to Android 11 with no trouble. I used the non home csc. First thing though make sure your boot loader is locked for the initial installation of 11 just be safe.
Click to expand...
Click to collapse
How did you manage? Any guides?
fatihdemirbal said:
How did you manage? Any guides?
Click to expand...
Click to collapse
very simple. download the latest android 11 firmware. use odin and load the ap bl and cp files, and also load the NONhome csc (you'll have to start from scratch). go to download mode on phone and run odin.

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