So I'm planning to switch carriers and I'm wondering how I can unlock my i747M locked to Fido that's running OctOS L 5.1.1. If I have to downgrade, how do I transfer all my current app data and pic's. Also, is it possible to keep the unlock if you were to update you phone to a higher version or install a custom ROM or install the nandroid backup you made before unlocking? Please leave me with some important things to know about while unlocking your phone if possible!
If the phone is running a 4.3 or newer bootloader, you'll have to buy an unlock code.
In order to enter the unlock code, the phone should be running a stock samsung ROM from sammobile.
I suggest creating a nandroid backup with TWRP, copy the backup to your computer, flash the stock ROM, perform a factory reset after flashing stock, unlock, flash TWRP, restore nandroid.
audit13 said:
If the phone is running a 4.3 or newer bootloader, you'll have to buy an unlock code.
In order to enter the unlock code, the phone should be running a stock samsung ROM from sammobile.
I suggest creating a nandroid backup with TWRP, copy the backup to your computer, flash the stock ROM, perform a factory reset after flashing stock, unlock, flash TWRP, restore nandroid.
Click to expand...
Click to collapse
so, in a nutshell, i just need to downgrade my phone to a stock rom of 4.3 or below and just search up a video of how to unlock it using the keypad method?
than if i wanted to, i could use the nandroid backup i did before and flash it and still have an unlocked phone?
You cannot use the free method once the phone is running a 4.3 or newer bootloader because you cannot properly run the 4.1.1 modem on a 4.3 or 4.4.2 bootloader and the 4.3 or 4.4.2 bootloader cannot be downgraded to a 4.1.1 bootloader.
Before flashing anything, which bootloader is on the phone?
audit13 said:
You cannot use the free method once the phone is running a 4.3 or newer bootloader because you cannot properly run the 4.1.1 modem on a 4.3 or 4.4.2 bootloader and the 4.3 or 4.4.2 bootloader cannot be downgraded to a 4.1.1 bootloader.
Before flashing anything, which bootloader is on the phone?
Click to expand...
Click to collapse
Sorry for the noob question, but how do i found out my bootloader?
If this helps, my baseband is I747MVLUFOB3
I actually just logged on to get similar clarification. I have an unlock code, but it does not work when I enter it using OctOS-M. Do I need to be on a stock rom to unlock? Can I easily jump back to a stock rom, then back again to a marshmallow rom?
JoshMcMadMac said:
I actually just logged on to get similar clarification. I have an unlock code, but it does not work when I enter it using OctOS-M. Do I need to be on a stock rom to unlock? Can I easily jump back to a stock rom, then back again to a marshmallow rom?
Click to expand...
Click to collapse
From what ive heard, you have to be on a stock rom. As of google, even then, some users have problems or cant, which from what ive heard, can be fixed by downgrading to 4.3 (make sure ur bootloader is the same or your phone WILL be bricked).
Please note that this is from what ive heard and may not be accurate.
Install the Samsung phone info app from the play store as it will tell you a lot.
audit13 said:
Install the Samsung phone info app from the play store as it will tell you a lot.
Click to expand...
Click to collapse
My boot loader seems to be the same as my baseband.
What is the bootloader version?
GamingDevilsCC said:
From what ive heard, you have to be on a stock rom. As of google, even then, some users have problems or cant, which from what ive heard, can be fixed by downgrading to 4.3 (make sure ur bootloader is the same or your phone WILL be bricked).
Click to expand...
Click to collapse
That sounds problematic...I am on NJ2. I am not having any luck finding anything about getting back to stock on the newest bootloader.
audit13 said:
If the phone is running a 4.3 or newer bootloader, you'll have to buy an unlock code.
In order to enter the unlock code, the phone should be running a stock samsung ROM from sammobile.
I suggest creating a nandroid backup with TWRP, copy the backup to your computer, flash the stock ROM, perform a factory reset after flashing stock, unlock, flash TWRP, restore nandroid.
Click to expand...
Click to collapse
Do you think this one would work?
https://z3x-team.com/forum/topic.php?id=9505
Whats a CWM anyways?
CWM is Clockworkmod with is a custom recovery. CWM is outdated as it has not been updated for quite some time. Many recent custom ROMs now require TWRP.
You may be able to software unlock the phone but you'll probaby need a UART cable and Samsung Pro tools. I don't believe Pro Tools is free.
The linked thread is from 2014 and, in 2014, many phones were running 4.1.2 which meant the phone could be downgraded to 4.1.1 using and sim unlocked using the dialler's menu options.
Related
I know there are a few threads regarding this issue but I can't seem to find a definitive answer.
I am currently running stock 4.3 jellybean (rooted). My phone hasn't received the 4.4 KitKat update yet, so I wanted to install CM11 in order to get KitKat on my s3. However, I heard CM11 can be buggy on the s3, so in case things go south, I want to be able to revert back to the stock 4.3 rom. Some people have said that you can easily flash the stock ROM via ODIN. However, others said that downgrading from 4.4.2 to 4.3 will hard brick the device since installing CM11 updates the boot loader. So downgrading to 4.3 stock with a 4.4.2 boot loader will cause a hard brick according to other threads I've seen. My question is, how can I downgrade from CM11 to stock 4.3 safely without bricking? Thanks in advance.
If you are sure you are using a Canadian version of the i747m, you can flash back to stock in Odin using a stock 4.3 ROM for the phone's original carrier (Bell, Rogers, Telus).
audit13 said:
If you are sure you are using a Canadian version of the i747m, you can flash back to stock in Odin using a stock 4.3 ROM for the phone's original carrier (Bell, Rogers, Telus).
Click to expand...
Click to collapse
Yes I got the phone from Rogers, it's most definitely i747M. But do I have to worry about any issues with the bootloader? I'm assuming installing CM11 will install the 4.4.2 bootloader, so if I choose to downgrade to the stock 4.3 rom, will it cause any issues seeing as I'm running a 4.3 rom with a 4.4.2 bootloader? I just want to make sure because I heard it can cause some serious problems if the bootloader is newer than the rom.
Mzrz said:
Yes I got the phone from Rogers, it's most definitely i747M. But do I have to worry about any issues with the bootloader? I'm assuming installing CM11 will install the 4.4.2 bootloader, so if I choose to downgrade to the stock 4.3 rom, will it cause any issues seeing as I'm running a 4.3 rom with a 4.4.2 bootloader? I just want to make sure because I heard it can cause some serious problems if the bootloader is newer than the rom.
Click to expand...
Click to collapse
I have never come across a custom ROM that touches the bootloader. A compatible bootloader has to be loaded on the phone before you attempt to install the custom ROM. Supported bootloaders can be found in the ROM's updater script.
I assume your phone has no warranty since you rooted it on stock 4.3. Did you root it by installing a pre-rooted ROM?
You could copy a ROM to your external SD card, install Philz Touch via Odin, reboot directly to recovery, create a nandroid backup, wipe cache, Dalvik, data, and install your KK ROM.
audit13 said:
I have never come across a custom ROM that touches the bootloader. A compatible bootloader has to be loaded on the phone before you attempt to install the custom ROM. Supported bootloaders can be found in the ROM's updater script.
I assume your phone has no warranty since you rooted it on stock 4.3. Did you root it by installing a pre-rooted ROM?
You could copy a ROM to your external SD card, install Philz Touch via Odin, reboot directly to recovery, create a nandroid backup, wipe cache, Dalvik, data, and install your KK ROM.
Click to expand...
Click to collapse
Okay, I was just making sure because I know OTA updates can change the bootloader, so I just wanted to make sure the custom roms don't do that. As for the custom recovery, are you recommending Philz Touch over CWM and TWRP? Do you know which custom recovery is installed from the CM installer?
audit13 said:
I have never come across a custom ROM that touches the bootloader. A compatible bootloader has to be loaded on the phone before you attempt to install the custom ROM. Supported bootloaders can be found in the ROM's updater script.
I assume your phone has no warranty since you rooted it on stock 4.3. Did you root it by installing a pre-rooted ROM?
You could copy a ROM to your external SD card, install Philz Touch via Odin, reboot directly to recovery, create a nandroid backup, wipe cache, Dalvik, data, and install your KK ROM.
Click to expand...
Click to collapse
Oh and one more question, my phone was originally carrier locked to Rogers and unrooted on 4.3 jelly bean. I brought it in to a cell store for them to carrier unlock it for me, but they used a rooting method to unlock it (because SuperSU was installed on it when I brought it back). They didn't unlock it with a code, so I'm guessing they used something like Samsung Tool or z3x shell. If I install CM11, will I lose the unlock, considering it's more of a "soft unlock", or is the unlock permanent regardless of how many roms I flash? Thanks for your help!
Mzrz said:
Okay, I was just making sure because I know OTA updates can change the bootloader, so I just wanted to make sure the custom roms don't do that. As for the custom recovery, are you recommending Philz Touch over CWM and TWRP? Do you know which custom recovery is installed from the CM installer?
Click to expand...
Click to collapse
Philz is based on the latest release of CWM and I prefer CWM over TWRP because I had problems flashing ROMs. Once I switched to Philz/CWM, no more problems.
Mzrz said:
Oh and one more question, my phone was originally carrier locked to Rogers and unrooted on 4.3 jelly bean. I brought it in to a cell store for them to carrier unlock it for me, but they used a rooting method to unlock it (because SuperSU was installed on it when I brought it back). They didn't unlock it with a code, so I'm guessing they used something like Samsung Tool or z3x shell. If I install CM11, will I lose the unlock, considering it's more of a "soft unlock", or is the unlock permanent regardless of how many roms I flash? Thanks for your help!
Click to expand...
Click to collapse
The unlock should be permanent. I unlocked it using the free method when on 4.1.1 and no ROM has ever caused it to re-lock. Reflashing a completely stock ROM, including the bootloader, did not relock the phone.
Please remember that flashing and changing ROMs will always carry a risk of soft bricking or hard bricking your phone. Make sure you read all of the guides and be prepared for disaster.
Good read here: http://forum.xda-developers.com/showthread.php?t=2201860
Hi everyone,
I am looking for a way to sim unlock my S3 so my girlfriend can use it on Telus (I just got an OPO )
Before I purchase a code, I have a few questions, if anyone knows the answer
1- Will an unlock code work with my setup? (I am seeing reports of it only working on Stock 4.1 and whatnot)
2- Where is a good place to purchase a code? (Rogers a crooks with a 50$ fee and I don't wanna get ripped off online either)
Thanks!
XC3N
You will need to be running a stock or close to stock ROM in order to use the unlock code. You do not need to be on stock 4.1.1 to use an unlock code. You need to be running stock 4.1.1 if you want to unlock using the free method. You may be able to unlock it using a code if you are running a stock dialler.
What bootloader or baseband is on your phone?
audit13 said:
You will need to be running a stock or close to stock ROM in order to use the unlock code. You do not need to be on stock 4.1.1 to use an unlock code. You need to be running stock 4.1.1 if you want to unlock using the free method. You may be able to unlock it using a code if you are running a stock dialler.
What bootloader or baseband is on your phone?
Click to expand...
Click to collapse
I managed to get a code from Rogers for half the price, which is "not that bad" I guess...
I have yet to try it as I don't have the SIM card with me atm.
Baseband: I747MVLUEMK5
it's my understanding that downgrading from this will brick your phone...
Thanks for all the info!
Yes, trying to downgrade from mk5 will brick your phone.
Find the stock Rogers ROM from sammobile.com and flash it via Odin. Flashing back to stock will wipe all user data and files so make sure you backup everything you need before flashing back to stock.
audit13 said:
Yes, trying to downgrade from mk5 will brick your phone.
Find the stock Rogers ROM from sammobile.com and flash it via Odin. Flashing back to stock will wipe all user data and files so make sure you backup everything you need before flashing back to stock.
Click to expand...
Click to collapse
Ok I tried the code and it didn't work.
I'll read up on the Odin procedure... I've done it before on another phone but I wanna make sure I don't end up with a brick! Thanks!
Sent from my A0001 using XDA Free mobile app
ah one more thing... since I'm using the unlock code (I don't believe the free method works on Rogers phone anyway) should I flash to stock MK5?
If I go to stock MK5, eill I be able to come back to CM afterwise?
Thanks!
The free method will only work if you are running an i747 or i747m on stock 4.1.1 including the bootloader.
If you flash back to stock mk5, you should be able to re-install cwm and CM11. There are many threads on disabling knox and install CWM.
audit13 said:
The free method will only work if you are running an i747 or i747m on stock 4.1.1 including the bootloader.
If you flash back to stock mk5, you should be able to re-install cwm and CM11. There are many threads on disabling knox and install CWM.
Click to expand...
Click to collapse
Hi! Reporting back, everything worked well flashing stock rom using this method:
http://forum.xda-developers.com/showthread.php?t=1739426
I had a slight problem after the Odin flash where I had to boot to recovery and factory reset to get out of a boot loop, but everything went fine after that.
I managed to unlocked the phone, changed the recovery using the aforementioned thread and got back up and running on CM11 M10 in no time!
Thanks a lot for your help sir =)
Francis // XC3N
I am trying to upgrade an S3 from an older kit kat aosp rom to a 5.0+ rom. The phone is still on the UCDMG2 bootloader/baseband combo. I kept it on that version to keep my unlocked bootloader and not worry about all this e-fuse stuff going on.
So here is the problem. 5.0 roms flash ok, but say I have no signal. I am able to make phone calls and send text messages, but I have no data. Is there a modem I can flash that will work on 5.0+ roms with the old bootloader? I have been sifting through the various modem/bootloader threads with no luck. Any suggestions on how to obtain data?
condor97 said:
I am trying to upgrade an S3 from an older kit kat aosp rom to a 5.0+ rom. The phone is still on the UCDMG2 bootloader/baseband combo. I kept it on that version to keep my unlocked bootloader and not worry about all this e-fuse stuff going on.
So here is the problem. 5.0 roms flash ok, but say I have no signal. I am able to make phone calls and send text messages, but I have no data. Is there a modem I can flash that will work on 5.0+ roms with the old bootloader? I have been sifting through the various modem/bootloader threads with no luck. Any suggestions on how to obtain data?
Click to expand...
Click to collapse
as i understand it , and could be completely wrong , but bootloaders and modems should always match. have you tried a different kernel ?
http://forum.xda-developers.com/showthread.php?t=2390147
quantum was an excellent kernel when i had my S3. also i believe ktoonsez makes a lollipop kernel but i couldnt find the link.
as always , backupbackupbackup and readreadread.
"all i can really do , is stay out of my own way and let the will of heaven be done"
mrrocketdog said:
as i understand it , and could be completely wrong , but bootloaders and modems should always match. have you tried a different kernel ?
http://forum.xda-developers.com/showthread.php?t=2390147
quantum was an excellent kernel when i had my S3. also i believe ktoonsez makes a lollipop kernel but i couldnt find the link.
as always , backupbackupbackup and readreadread.
"all i can really do , is stay out of my own way and let the will of heaven be done"
Click to expand...
Click to collapse
Thank you. I have not tried a kernel. Do you think that would help with connectivity?
I was wondering about the boot loader thing. Perhaps there is no way to avoid the upgrade.
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
The bootloaders on the i747 and i747m are not locked.
audit13 said:
The bootloaders on the i747 and i747m are not locked.
Click to expand...
Click to collapse
Ok good to know. So once you upgrade, you don't have to unlock the bootloader to flash recovery/rom?
Edit: sorry, dumb question.
After upgrading to the mjb or newer bootloader, you cannot downgrade the bootloader to an older version. Also, the upgraded bootloader will remain unlocked so you can easily flash a custom recovery in Odin.
audit13 said:
After upgrading to the mjb or newer bootloader, you cannot downgrade the bootloader to an older version. Also, the upgraded bootloader will remain unlocked so you can easily flash a custom recovery in Odin.
Click to expand...
Click to collapse
Can you point me towards the best way to upgrade? I have found some flashable zips, but would prefer to do it through Odin.
I think the safest way to get to the newest bootloader and modem would be to use the 4.1.1 firmware on sammobile.com to flash back to stock in Odin. Once you set up the ROM on your phone, run the OTA updates until you have the latest modem and bootloader. It the slowest way to do but, in my opinion, the safest.
If you phone is not sim unlocked, you can use the free method to permanently unlock the phone while you are on stock 4.1.1.
Once you are on the latest ROM, you could install a custom recovery, create a nandroid backup of the stock ROM, and then flash a custom ROM.
audit13 said:
I think the safest way to get to the newest bootloader and modem would be to use the 4.1.1 firmware on sammobile.com to flash back to stock in Odin. Once you set up the ROM on your phone, run the OTA updates until you have the latest modem and bootloader. It the slowest way to do but, in my opinion, the safest.
Once you are on the latest ROM, you could install a custom recovery, create a nandroid backup of the stock ROM, and then flash a custom ROM.
Click to expand...
Click to collapse
Ok thanks!
condor97 said:
Ok thanks!
Click to expand...
Click to collapse
Is the phone sim unlocked?
audit13 said:
Is the phone sim unlocked?
Click to expand...
Click to collapse
No, it is not. I don't think Lol.
Sent from my SAMSUNG-SGH-I747 using XDA Premium 4 mobile app
You should run through the free unlock method after you flash back to stock. Even if the phone is already unlocked, it won't re lock.
audit13 said:
You should run through the free unlock method after you flash back to stock. Even if the phone is already unlocked, it won't re lock.
Click to expand...
Click to collapse
That is a good idea. Thanks!
Can i downgrade urooted I747 from 4.4.2 to 4.1.1 using odin without bricking my phone?
My build number is KOT49H.I747UCUFNJ1
And also can i update that to 4.4.2 OTA again?
Please reply soon.
You can downgrade the ROM but not the bootloader. Attempts to downgrade the bootloader will probably brick the phone.
audit13 said:
You can downgrade the ROM but not the bootloader. Attempts to downgrade the bootloader will probably brick the phone.
Click to expand...
Click to collapse
Im sort for noob question. But whats a bootloader and how can I downgrade to 4.1.1 without flashing bootloader?
Are you trying to downgrade to 4.1.1 to sim unlock the phone using the free method? If you are, this will not work because the 4.1.1 modem will not work on a 4.4.2 bootloader. You will need to obtain an unlock code.
audit13 said:
Are you trying to downgrade to 4.1.1 to sim unlock the phone using the free method? If you are, this will not work because the 4.1.1 modem will not work on a 4.4.2 bootloader. You will need to obtain an unlock code.
Click to expand...
Click to collapse
MY phone is already sim unlocked I am just trying to fresh install stock Rom on my phone which is on 4.4.2. Can you help me with links please. AND THANKS for the quick reply
You will not be able to downgrade the rom to 4.1.1 while keeping the bootloader at 4.4.2 because the modem will not work on a 4.4.2 bootloader which means you probably can't run ota updates.
To downgrade without touching the bootloader and modem, you need to use mobile Odin. Also, you will have to find a source for the 4.1.1 stock rom since att pulled it from sammobile.com.
audit13 said:
You will not be able to downgrade the rom to 4.1.1 while keeping the bootloader at 4.4.2 because the modem will not work on a 4.4.2 bootloader which means you probably can't run ota updates.
To downgrade without touching the bootloader and modem, you need to use mobile Odin. Also, you will have to find a source for the 4.1.1 stock rom since att pulled it from sammobile.com.
Click to expand...
Click to collapse
Willl this work If i flash with mobile odin?
sammobile,com/firmwares/database/SGH-I747/
You may be able to flash 4.1.1 with mobile Odin but ota updates probably won't work due to a mismatch between the bootloader and rom. Also, the ota updates normally get applied in order: first, 4.3, then 4.4.2.
So in Theory If we flashed back and was a success...
Then we can do the unlock and flash back to 4.2.2 then rom it again ?
stunna946 said:
So in Theory If we flashed back and was a success...
Then we can do the unlock and flash back to 4.2.2 then rom it again ?
Click to expand...
Click to collapse
i am still not certain. But thanks for your time and effort )
stunna946 said:
So in Theory If we flashed back and was a success...
Then we can do the unlock and flash back to 4.2.2 then rom it again ?
Click to expand...
Click to collapse
Nope, can't unlock using the free method if the phone is running a 4.3 or newer bootloader. Even if you downgrade the rom to 4.1.1.
audit13 said:
Nope, can't unlock using the free method if the phone is running a 4.3 or newer bootloader. Even if you downgrade the rom to 4.1.1.
Click to expand...
Click to collapse
Thanks, Ive tried going thru ATT to unlock phones in the past its like pulling teeth. I have a 0 success rate. :crying: I Just have this Brand new T mobile sim I want to use.
Furthermore, I've even tried the I'm going over seas trick.. They say they will send it to my email, an nothing; Ive even called back to confirm the correct email too..
stunna946 said:
Thanks, Ive tried going thru ATT to unlock phones in the past its like pulling teeth. I have a 0 success rate. :crying: I Just have this Brand new T mobile sim I want to use.
Furthermore, I've even tried the I'm going over seas trick.. They say they will send it to my email, an nothing; Ive even called back to confirm the correct email too..
Click to expand...
Click to collapse
Any chance their emails are ending up in a spam/advertising folder and not making it to your inbox?
I've had no problems with AT&T unlocking phones in past. As long as you're "eligible" (I assume that means off contract) they email the codes and instructions, no fuss.
I have Pac Rom Android 5.1.1 installed on my rooted sg3 and I need to do a carrier unlock. I contacted ATT to get the unlock code and the code they provided didn't work. Now I want to downgrade to Android 4.1 and try the UMTS menu trick as described here http://forum.xda-developers.com/showthread.php?t=2176719
I have tried Odin many times (with many versions, different computers, USB cables, etc) and every time Odin fails to flash Android 4.1. with a Fail AUTH error. I have used Odin successfully in the past many times with this phone but am unable to get it to work this time around.
Does anyone know how to downgrade the sg3 from 5.1.1 to 4.1? Or even better does anyone how to carrier unlock the sg3 when it has 5.1.1 installed on it?
Thanks!
Odin is probably failing because you have a 4.3 or 4.4.2 bootloader on your phone. I recommend you not flash anymore ROMs using Odin as repeat attempts to flash the 4.1.1 ROM via Odin may hard brick the phone.
Once a phone is running and 4.3 or 4.4.2 bootloader, you cannot use the free/hidden menu method to unlock the phone.
You cannot use a custom ROM to enter an unlock code. You'll have to go back to a stock ROM, enter the code, and return to a custom ROM.
Thanks for the reply. Do you know how I can go back to stock 4.1.1 without using Odin?
You need the 4.1.1 bootloader in order to use the free method. Once a phone is on 4.3 bootloader or higher, you can't go back to 4.1.1. Don't try because attempts to do so could brick the phone.
A stock 4.1.1 rom on a 4.3 bootloader will not work.
So you're saying once the sg3 is on a version above 4.3 there is no way to go back to 4.1.1?
slipnslider said:
So you're saying once the sg3 is on a version above 4.3 there is no way to go back to 4.1.1?
Click to expand...
Click to collapse
Once it is on the 4.3 or higher bootloader, there is no going back to an older bootloader and it is the older 4.1.1 bootloader and stock 4.1.1 ROM that is required to unlock using the free method.
Since you have the code, you can flash a stock ROM from recovery.
audit13 said:
Once it is on the 4.3 or higher bootloader, there is no going back to an older bootloader and it is the older 4.1.1 bootloader and stock 4.1.1 ROM that is required to unlock using the free method.
Since you have the code, you can flash a stock ROM from recovery.
Click to expand...
Click to collapse
Thanks. What do you mean by free method?
Also you suggesting if I put the 4.1.1 stock rom .zip on my sg3 I can flash it via CWM just like I would the latest 5.1.1 Pac Rom release?
The free method is the method you linked in your original post. This is the only free method available and it requires a 4.1.1 bootloader that your phone doesn't have. Installing 4.1.1 via cwm is not going to help you unlock it.
Since you have the code, you can flash a stock ROM from recovery.
Click to expand...
Click to collapse
How would I do this? Do I just flash 4.1.1 from cwm?
Flashing 4.1.1 onto your phone will not allow you to enter the code.
Before flashing anything, you need to verify the bootloader that is running on your phone. Until you do that, I would not flash any bootloaders or modems. An incompatible modem/bootloader combination can also brick your phone.
Sorry, one last question.
You'll have to go back to a stock ROM, enter the code, and return to a custom ROM.
Click to expand...
Click to collapse
How can I go back to the stock rom?
You can flash a stock rom from the general thread using twrp or cwm.
Awesome, thanks again. I was worried about going that route since I'm on 5.1.1 but I'll give it a shot
slipnslider said:
Awesome, thanks again. I was worried about going that route since I'm on 5.1.1 but I'll give it a shot
Click to expand...
Click to collapse
When you pick a stock ROM, make sure you pick one with the same bootloader and modem that are currently on your device. You probably have either the NE4 or NJ1 bootloader and modem pair. You DO NOT have a 5.1.1 bootloader and modem, they do not exist for the SGS3. Check your versions from a Terminal Emulator app or check them with the Phone Info - Samsung - app from the PlayStore.
Both NE4 and NJ1 stock ROMs are available in the forum. enewman17 posted them form image dumps, they have been used successfully by many.
The Terminal Emulator commands are:
Code:
getprop ro.bootloader
getprop | grep version.baseband
Thanks, I did this and both the bootloader and modem ended with NJ1 so I downloaded UCUFNJ1_Rooted.zip from enewman17's thread using CWM 6.0.4. The flash was successful but now the phone is frozen at the AT&T logo when I turn it on.
Any thoughts as to why its stuck booting up?
slipnslider said:
Thanks, I did this and both the bootloader and modem ended with NJ1 so I downloaded UCUFNJ1_Rooted.zip from enewman17's thread using CWM 6.0.4. The flash was successful but now the phone is frozen at the AT&T logo when I turn it on.
Any thoughts as to why its stuck booting up?
Click to expand...
Click to collapse
More than once I have seen reports of this happening when going from a 5.x.x ROM back to 4.4.x. The most common solution has been to include formating the internal sdcard before flashing the stock ROM.
If I flash the sd card as well I will lose the UCUFNJ1_Rooted.zip file. So in that case should I use adb via CWM to flash it?
slipnslider said:
If I flash the sd card as well I will lose the UCUFNJ1_Rooted.zip file. So in that case should I use adb via CWM to flash it?
Click to expand...
Click to collapse
Put the zip file on the external sdcard and then flash it with your recovery.
I actually didn't have an external SD card. I wound up taking it to the ATT store that had an ATT repair shop inside it and they reset it back to stock 4.4 for me and now everything works great! After unlocking the carrier on the phone I did have to manually enter the t-mobile APN to get the data connection working but that was simple (the info is listed on t-mobile's site)
slipnslider said:
I actually didn't have an external SD card. I wound up taking it to the ATT store that had an ATT repair shop inside it and they reset it back to stock 4.4 for me and now everything works great! After unlocking the carrier on the phone I did have to manually enter the t-mobile APN to get the data connection working but that was simple (the info is listed on t-mobile's site)
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Click to collapse
Glad to see you are up and running. Also glad to hear the AT&T guys helped out.