[Q] i747 hard brick - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

i have a galaxy s3 i747 which was running on 4.3..i installed a dirty unicorns 4.4.2custom rom and unlocked the bootloader with ez unlock...,i managed to get 4.4.2 debrick file..phone came on but but had no baseband and imei..installed ucufne4 bootloaders and and stock 4.4.2 rom..now it only boots with sdcard debrick image..once sd is removed it wont boot..need help fixing this

Hi
Thanks for writing to us at XDA Assist. Please standby while we have your thread/question moved to the appropriate sub-forum for your device.
For future reference you can find your specific device forum here (bookmark/subscribe this):
AT&T, Rogers, Bell, Telus Samsung Galaxy S III
Within that section you will find a dedicated q&a sub-forum (this is where your thread is going to be moved to):
AT&T Galaxy S III Q&A, Help & Troubleshooting
Good luck!
Transmitted via Bacon

Which 4.4.2 ROM did you flash?
BTW, the bootloader on the s3 i747 has never been locked.

i unlocked it with ez unlock by mistake., but it never came back on after restart...but managed to get it powering on with the sd card debrick image 4.4.2..i had dirty unicorn 4.4.2 rom installed..now im on stock 4.4.2 ucufne4 with imei and baseband restored...so how do i relock bootloader so it can boot without sd?..i think the the bootloader is unlocked..not too sure.

You cannot "re-lock" the bootloader as the bootloader was never locked to begin with.
Are you able to the phone into download mode? How did you install the ne4 bootloader and modem?

i was able to boot phone as normal in download mode or recovery..i flashed the ucufne4 modem which restored my baseband and imei..then i downloaded the stock 4.4.2 rooted odex which i flashed in recovery and returned to stock from dirty unicorns rom..but the phone jus wont boot without the sd debrick 4.4.2 image..without the sd its like a hard brick

Did you flash the ne4 bootloader?

bootloader or modem?..i did flash ne4 modem..dont kno wat seems to be preventing it from booting normally.

Depending on the ROM you flashed, it may not have included the bootloader.

so which rom should i flash to fix this...currently on stock rom 4.4.2 right now

Can you run a terminal command to get the bootloader? You can also download the Samsung Phone Info app from the Play store and it will give you lots of info about your phone.

when i type in getprop ro.bootloader...it says i747ucufne4 in terminal command

Seems to me you need the ne4 modem AND bootloader. I'm on ne4 and I flash all 4.4.4 and 5.0.x Roms. Maybe try from scratch and a cm11 ROM to begin with, that's a 4.4.4 ROM.....The newest modem and bootloader is NJ1 if all else fails do some research on the newer firmware
sent from my Savaged s3 using XDA

Sounds like you have the right bootloader and modem on your phone but there is no rom.
I suggest booting into download mode, flash philz custom recovery for the d2lte, flash the latest release of cm11, try to boot your phone without sd card.

i have installed the latest cm11 nightly build d2lte for i747...with ucufne4 modem..but phone still dosent boot without debrick sdcard...its like the phone is missing a file for booting...once the sdcard is in with debrick image it will boot..it probably reads from the sd instead of the board..still trying to figure out why this is happening..

finally i got it working...i installed d2att_I747UCUFNE4_bootloader_modem_4.4.2_7-29-14 zip and reinstalled cm11 and restarted phone..and it restarted with out sdcard..every thing is working fine now..gonna install dirty unicorns rom later..thank for the help and support guys.. really appreciate it

Wich files did you use it
ejoyeux34 said:
i have a galaxy s3 i747 which was running on 4.3..i installed a dirty unicorns 4.4.2custom rom and unlocked the bootloader with ez unlock...,i managed to get 4.4.2 debrick file..phone came on but but had no baseband and imei..installed ucufne4 bootloaders and and stock 4.4.2 rom..now it only boots with sdcard debrick image..once sd is removed it wont boot..need help fixing this
Click to expand...
Click to collapse
Wich files did you use it? I did the same in my phone i747 trying to unlock with ex-unlock, I was in 4.3 with ucufne4, I dowload 2 files but I can't make it boot or to be in downloading mode thank you

Related

[Q] Stuff is harder to find for sgh i747m

Hi im new on this forum and I would like to have some tricks and tips cause I just rooted my phone yesterday and it seems more difficult to find information for my phone I have a galaxy s3 on 4.3 sgh i747m with Rogers .... Is it me or there is just a lot more stuff made for the i9300... I have tried to find ROM'S and tricks to put CWM recovery but it's harder to find information !!
to put CWM recovery I saw a lot of stuff saying download rom manager and install CWM recovery with this app but they offer me a version of CWM recovery for a galaxy s3 (metro cps) they doesn't say if it's made for a sgh i747 so im really scared to do something wrong if I install this version of CWM recovery ..
Could some one help me maybe with website limks or a guide for beginers noob like me or this forum seem's to be really good with some people with knowledge
Before my galaxy s3 I had a Jailbreak Iphone 3gs a year ago but Rooting an Android and putting stuff on it is not really the same thing it's far away from it!
And does it matter if put some stuff on my phone made for at&t sprint etc.... even if those are sgh i747
Hey,
I am running CM11 d2att and CWM d2att on my i747m and it works perfectly. It has been so long since I did it that I can't remember the exact steps that I took, so I would do some more research. Everything I needed to know was on these forums somewhere.
I believe the rough steps I took were:
- Root
- Install CWM (d2att)
- Update bootloaders (i747m)
- Flash d2att rom
But I can't remember exactly, so do some research before you go ahead!
You can install pretty much whatever you'll find in these forums except for bootloaders and modems.
There are specific bootloaders/modem for the i747m vs. i747.
The rest, unless explicitely specified otherwise, is 100% compatible between i747 and i747m.
As for your recovery script, I would suggest installing TWRP instead of CWM.
TWRP is more user friendly for people that are new to Android and both are usually supported.
For this, go to the Play Store, download and install the "Goo manager" application.
Once installed, open up the app, hit the menu button and select the "install recovery script" option.
It will automatically select/download/install the correct recovery for your phone and ask you to confirm before doing so.
HiKsFiles said:
You can install pretty much whatever you'll find in these forums except for bootloaders and modems.
There are specific bootloaders/modem for the i747m vs. i747.
The rest, unless explicitely specified otherwise, is 100% compatible between i747 and i747m.
As for your recovery script, I would suggest installing TWRP instead of CWM.
TWRP is more user friendly for people that are new to Android and both are usually supported.
For this, go to the Play Store, download and install the "Goo manager" application.
Once installed, open up the app, hit the menu button and select the "install recovery script" option.
It will automatically select/download/install the correct recovery for your phone and ask you to confirm before doing so.
Click to expand...
Click to collapse
Ok thank you thats what I was wondering it doesn't matter if it's an at&t, bell or rogers... but it have to be the right model !!
Your talking about bootloader ... when I rooted my phone I have unlock my bootloader right ?? What is the advantage of changing your bootloader ....do you have to change it when you put a custom rom's?? Maybe my question have no sense at all because im new to this but I keep reading a lot of stuff on android !
carlosQC said:
Ok thank you thats what I was wondering it doesn't matter if it's an at&t, bell or rogers... but it have to be the right model !!
Your talking about bootloader ... when I rooted my phone I have unlock my bootloader right ?? What is the advantage of changing your bootloader ....do you have to change it when you put a custom rom's?? Maybe my question have no sense at all because im new to this but I keep reading a lot of stuff on android !
Click to expand...
Click to collapse
I recommend not updating your phone to any stock 4.3 ROM. A stock 4.3 ROM will install a 4.3 bootloader which cannot be downgraded and may cause problems when trying to root or get back to stock.
Some newer ROMs require an updated bootloader in order to install and boot. I am running a 4.1.2 bootloader on my i747m and don't have any problems installing 4.4.2 ROMs.
Rooting gives you access to the system files and does not unlock you bootloader.
For installing custom ROMs, I use Philz Touch which is based on CWM. I have tried TWRP and I was getting errors when flashing custom ROMs. I was able to flash the same ROM using Philz Touch without a problem. TWRP is more user friendly but doesn't work as well for me.
audit13 said:
I recommend not updating your phone to any stock 4.3 ROM. A stock 4.3 ROM will install a 4.3 bootloader which cannot be downgraded and may cause problems when trying to root or get back to stock.
Some newer ROMs require an updated bootloader in order to install and boot. I am running a 4.1.2 bootloader on my i747m and don't have any problems installing 4.4.2 ROMs.
Rooting gives you access to the system files and does not unlock you bootloader.
For installing custom ROMs, I use Philz Touch which is based on CWM. I have tried TWRP and I was getting errors when flashing custom ROMs. I was able to flash the same ROM using Philz Touch without a problem. TWRP is more user friendly but doesn't work as well for me.
Click to expand...
Click to collapse
what do you mean when you say I recommend not updating your phone to any stock 4.3 ROM (when a custom rom is based on 4.3?) and can you explain me the bootloader thing in details how can I fix that or how can I unlock it ?
what is d2att ?
carlosQC said:
what do you mean when you say I recommend not updating your phone to any stock 4.3 ROM (when a custom rom is based on 4.3?) and can you explain me the bootloader thing in details how can I fix that or how can I unlock it ?
what is d2att ?
Click to expand...
Click to collapse
Your post says youhave 4.3 on your phone. Is it a stock 4.3 ROM?
d2att (i747) is the AT&T version of the s3. Canada has the i747m.
The bootloader does not need to be unlocked in order to install a custom recovery or to root like Motorola phones.
The bootloader is software that an OS works with in order to function as a phone.
audit13 said:
Your post says youhave 4.3 on your phone. Is it a stock 4.3 ROM?
d2att (i747) is the AT&T version of the s3. Canada has the i747m.
The bootloader does not need to be unlocked in order to install a custom recovery or to root like Motorola phones.
The bootloader is software that an OS works with in order to function as a phone.
Click to expand...
Click to collapse
yes its the 4.3 jelly bean stock rom
but can I put any custom rom for my model the i747 or 747m ? The carrier doesn't have any importance ?
Any warranty left on your phone? Installing a custom ROM will void your warranty.
If you want to install a custom rom, copy the ROM you want to the internal or external SD card, install Philz Touch recovery, boot into recovery, wipe cache, Dalvik, install the ROM, and reboot.
You can install any ROM for the d2att as long as the ROM supports the phone's bootloader.
How I know which bootloader I got? If I have the 4.3 jelly bean I have a 4.3 boot loader?
Sent from my SGH-I747M using xda app-developers app
audit13 said:
Any warranty left on your phone? Installing a custom ROM will void your warranty.
If you want to install a custom rom, copy the ROM you want to the internal or external SD card, install Philz Touch recovery, boot into recovery, wipe cache, Dalvik, install the ROM, and reboot.
You can install any ROM for the d2att as long as the ROM supports the phone's bootloader.
Click to expand...
Click to collapse
How I know which bootloader I got? If I have the 4.3 jelly bean I have a 4.3 boot loader?
carlosQC said:
How I know which bootloader I got? If I have the 4.3 jelly bean I have a 4.3 boot loader?
Click to expand...
Click to collapse
Of you loaded a stock 4.3 ROM, you'll have the 4.3 bootloader.
audit13 said:
Of you loaded a stock 4.3 ROM, you'll have the 4.3 bootloader.
Click to expand...
Click to collapse
thank you for your help
Since you have TWRP installed, you not flash custom ROMs. Look around for a ROM you like, download it to your phone's SD card, boot into recovery, wipe cache, Dalvik, flash ROM, reboot.
audit13 said:
Since you have TWRP installed, you can not flash custom ROMs. Look around for a ROM you like, download it to your phone's SD card, boot into recovery, wipe cache, Dalvik, flash ROM, reboot.
Click to expand...
Click to collapse
He meant you CAN flash custom roms.
As long as the rom isn't packaged with a modem or bootloader you can flash any AT&T rom as you please.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
theramsey3 said:
He meant you CAN flash custom roms.
As long as the rom isn't packaged with a modem or bootloader you can flash any AT&T rom as you please.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Thanks for catching my error. I edited my original post.
audit13 said:
Thanks for catching my error. I edited my original post.
Click to expand...
Click to collapse
No problem hope you would do the same for me.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

[Solved] is there full rom 4.1.1 for i747

can any one provide me with full rom 4.1.1(many files ROM include bootloader ) for i747 as the device was bricked
toni.50 said:
can any one provide me with full rom 4.3 for i747 as the device was bricked
Click to expand...
Click to collapse
If it is on AT&T you need to find a custom... If you have a Canadian or Mexican SGH-I747M then you can flash via Odin.
What exactly is your definition of bricked? What is the phone doing what is the phone not doing, please be specific on what you did to "brick" your phone.
Once you verify which model phone you have and a description of what it is doing and how it got that way we might be able to point you in the right direction.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
sorry if my post is not clear , i have i747 AT&T on rom 4.1.1 (I747UCDLK3) I TRY TO root and unlock boot loader i used motochopper for root and EZ-unlock 1.2 for unlock bootloader but after restart nothing work !!! no boot no odin no no ,,, i try to use the sd card with debrick.img and yes it is workking but i have to keep the card... now i need the full rom with bootloader to fix this if any one have the 4.1.1 it will be better but i need the full version with bootloader, any help please ???
Maybe you can try using Odin to flash a pre-rooted AT&T 4.1.1 ROM from here: http://forum.xda-developers.com/showthread.php?t=1739426
toni.50 said:
sorry if my post is not clear , i have i747 AT&T on rom 4.1.1 (I747UCDLK3) I TRY TO root and unlock boot loader i used motochopper for root and EZ-unlock 1.2 for unlock bootloader but after restart nothing work !!! no boot no odin no no ,,, i try to use the sd card with debrick.img and yes it is workking but i have to keep the card... now i need the full rom with bootloader to fix this if any one have the 4.1.1 it will be better but i need the full version with bootloader, any help please ???
Click to expand...
Click to collapse
EZ- unlock is for the T999 it is what bricked your phone. Our bootloader is unlocked up to the 4.3 MJB bootloader. As long as your phone has never been on the MJB bootloaders go to www.sammobile.com and go to the firmware tab in the search box enter "i747" Then find the rom you want download it, insert your debrick card get into odin/download mode and flash your heart out.
Use the stickies guide for rooting your phone cf autoroot works well before 4.3, do not flash anything if you're unsure if it is for your phone, ask if it supports your model. Not all galaxy s3's are created equal.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Thanks every one i find soultion by myself yestrday thanks all >>> :laugh::laugh::laugh:

[Q] s3 I747 update ?

hi guys new to the galaxy phone and i have been looking into flashing a rom. i have done all the ground work root and custom recovery but now im trying to flash a rom and i get errors. i looked it up to a point where everything i do want to flash requires a 4.4 or 4.3 update and i am stuck in 4.1 is there any solution to this like start from an older rom and work my way up to a current rom. would that work or odin the phone to a current update if possible to find the update. what options do i have ?
not sure if this is the correct thread
Well I would just flash via Odin up to 4.3 because most Roms require the 4.3 boot loader so yea
Sent from my ATT Samsung Galaxy SIII using TapaTalk
I recommend you not update to the 4.3 bootloader as the 4.3 bootloader can cause problems when trying to flash back to stock. Once you're on a 4.3 bootloader, you cannot downgrade to a lower version. Most ROMs seem to work fine with a 4.1.1 or 4.1.2 bootloader.
If you have the att s3 (i747) and not the Bell/Telus/Rogers s3 (i747m), you cannot use Odin to flash a stock 4.3 ROM as it does not exist. You would need to flash a version of 4.3 that has been custom compiled for flashing via Odin.
I would download the latest version of Philz Touch and flash the tar version via Odin. Copy a custom ROM to your SD card, boot to recovery, wipe cache, Dalvik, data, and flash the ROM.
http://goo.im/devs/philz_touch/CWM_Advanced_Edition/d2lte

reverting to 4.1.1

i have the s3 att on a 4.4.4 CROM. the baseband says ...LK3. can i use any guide using odin to go back to 4.1.1 stock unrooted and then use OTA updates to get the latest baseband/bootloader/modem? just want to make sure before i do it. i hear this is the safest way and i want to make sure i have met the requirements before i do it so i dont end up having a brick! (not sure if it matters but i have never used OTA updates before)
thanks in advance.
Is your bootloader also the lk3? If the modem and bootloader are lk3, you can use Odin to flash back to stock using firmware from sammobile.com.
Ok, I'm on a similar boat. I tried several AOSP based ROMs, and while I like most of them a lot more than stock touchwiz, they all present the same problems:
- Camera stops working sometimes and I have to reboot device;
- Camera won't record videos in 1080p, even when it's selected in the settings;
- Cannot make video calls on Skype longer than 5 seconds before the call drops;
- Disconnecting a bluetooth media device while music is streaming causes sounds to stop working;
- Tap to pay doesn't work at all;
So because of these problems, I want to go back to stock . My phone is the AT&T version. Currently I'm running Carbon Rom with KitKat 444. The baseband version is I747UCUFNJ1. The latest version of the stock ROM available on sammobile is:
Version: Android 4.1.1
PDA: I747UCDLK3
CSC: I747ATTDLK3
MODEM: I747UCDLK3
Would I be able to revert my phone back to stock with Odin? If not, what would I have to do to revert? Am I stuck with custom ROMs?
I'm pretty new to this so I'd appreciate anybody's help.
If your bootloader and modem is the lk3, you should be able to Odin back to stock 4.1.1.
Ok, how do I find out if they are? And if they are not, do I have any other options?
Download and install the Samsung Info App from the Playstore. Report back here with your bootloader and modem.
audit13 said:
Download and install the Samsung Info App from the Playstore. Report back here with your bootloader and modem.
Click to expand...
Click to collapse
Ok, according to the Phone INFO *Samsung* app:
Baseband Version:
I747UCUFNJ1
Bootloader Version:
I747UCUFNJ1
There was no other modem info reported besides this
Modem Board:
MSM8960
someone correct me if i'm wrong.you cannot downgrade bootloader or it will brick. there is no stock rom for NJ1. this link will take you to a stock based 4.4.2 ROM which is safe to flash with the NJ1 bootloader/modem.
http://forum.xda-developers.com/showthread.php?t=2848080
"all i can really do , is stay out of my own way and let the will of heaven be done"
mrrocketdog said:
someone correct me if i'm wrong.you cannot downgrade bootloader or it will brick. there is no stock rom for NJ1. this link will take you to a stock based 4.4.2 ROM which is safe to flash with the NJ1 bootloader/modem.
http://forum.xda-developers.com/showthread.php?t=2848080
Click to expand...
Click to collapse
Well, that's a bummer if I can't restore stock rom to the phone. So there is absolutely no way of safely downgrading the booatloader?
nope. it will brick your phone if you try to downgrade your bootloader.
"all i can really do , is stay out of my own way and let the will of heaven be done"
Have you tried CM-11-based or TW-based ROMs?
mrrocketdog said:
someone correct me if i'm wrong.you cannot downgrade bootloader or it will brick. there is no stock rom for NJ1. this link will take you to a stock based 4.4.2 ROM which is safe to flash with the NJ1 bootloader/modem.
http://forum.xda-developers.com/showthread.php?t=2848080
Click to expand...
Click to collapse
I tried to push that ROM the phone using adb to flash it with ClockWorkMod, but the file is 1.7 GB and the phone always shuts itself down during the push process... So I wasn't able to try that. Also, the instructions say you're supposed to be on UCUFNE4. Are you sure it's safe to flash it on I747UCUFNJ1?
audit13 said:
Have you tried CM-11-based or TW-based ROMs?
Click to expand...
Click to collapse
I have tried CM11 and Carbon ROM, which is CM based, both have all the same problems. I haven't tried TW-based ROMS. Do you have any suggestions?
What do you mean by the phone shuts down? Did you try copying the ROM to a microSD card?
Did you notice any bootloader or modem files in the S3Rx 4.0 (11-9-14) ROM? It may not include a modem or bootloader. In step 1 of the flash process, it says "AT&T I747 users should update bootloaders and modem to NE4 http://forum.xda-developers.com/gala...pdate-t2808654 I747M and T999 users need to be on 4.3 firmware or ROM will not boot. "
the link i posted is TW. post #1306 claims is o.k. to flash with UFNJ1.
did not see any mention of bootloader or modem in changelog or in list of 'extra' features.
"all i can really do , is stay out of my own way and let the will of heaven be done"
audit13 said:
What do you mean by the phone shuts down? Did you try copying the ROM to a microSD card?
Did you notice any bootloader or modem files in the S3Rx 4.0 (11-9-14) ROM? It may not include a modem or bootloader. In step 1 of the flash process, it says "AT&T I747 users should update bootloaders and modem to NE4 http://forum.xda-developers.com/gala...pdate-t2808654 I747M and T999 users need to be on 4.3 firmware or ROM will not boot. "
Click to expand...
Click to collapse
I reboot the phone in ClockWorkMod recovery. Then I go to the command prompt and type:
Code:
adb push S3Rx_UCUFNE4_AROMA_11-9-14.zip /sdcard/
It starts pushing the file to the phone, but after a while, the phone screen goes black, and I get a "Protocol failure" on the command prompt. After this the power button no longer works, I have to do a battery pull for the phone to work again. The phone has 10 GB of storage left so it didn't run out of space. The USB chord is brand new so I don't think it's that either. It worked fine before when I pushed other smaller roms.
In another question, would this process allow me to downgrade the modem and restore stock rom?
http://forum.xda-developers.com/showthread.php?t=1831898
i am pretty sure that since youre on MJ1 , your bootloader and modem have to match.
"all i can really do , is stay out of my own way and let the will of heaven be done"
Did you try flashing the card from an external microSD card?
AT&T never released a stock ROM for the i747 beyond 4.1.1 afaik; therefore, you cannot get back to stock unless you flash an OTA ROM that has been compiled for flashing in Odin.
I do not recommend mixing and matching bootloaders and modems as a mismatch may result in a hard brick.
Downgrading only the modem will not allow you to flash back to stock.
audit13 said:
Did you try flashing the card from an external microSD card?
Click to expand...
Click to collapse
I haven't tried flashing from external microSD card as I don't have one.
audit13 said:
AT&T never released a stock ROM for the i747 beyond 4.1.1 afaik; therefore, you cannot get back to stock unless you flash an OTA ROM that has been compiled for flashing in Odin.
I do not recommend mixing and matching bootloaders and modems as a mismatch may result in a hard brick.
Downgrading only the modem will not allow you to flash back to stock.
Click to expand...
Click to collapse
So you're basically telling me I'm stuck with custom roms unless I find a 4.4.2 OTA ROM I can flash with Odin (which doesn't appear to exist)?
---------- Post added at 05:24 PM ---------- Previous post was at 05:01 PM ----------
Would it be safe to try this:
http://forum.xda-developers.com/showthread.php?t=2788357
Even though I'm on I747UCUFNJ1 and not on I747UCUFNE4?
Once you upgrade to the 4.3 or newer bootloader on the i747, you are stuck with either custom ROMs or OTA ROMs that have been compiled for flashing in Odin or CWM/TWRP.
You can try flashing the NE4 ROM because it doesn't appear to include a bootloader or modem. The first post says "Prerequisites include a minimum of a 4.3 bootloader and modem.
If you are not on the official 4.4.2 bootloaders and modem then you will need to flash ktoonsez kernel."
Thanks audit13 and mrrocketdog for all the help. I was able to get the AROMA rom installed on the phone. All functionalities lost with AOSP ROMs are back working so that's a plus. Still can't get updates OTA updates but this phone is probably not gonna have any new ones. Still hopeful that lolipop based AOSP ROMs fix the problems I had, but I'm not holding my breath.

Downgrading from Android 5.1.1 to Android 4.1

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.
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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.
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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.
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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
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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?
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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?
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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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Glad to see you are up and running. Also glad to hear the AT&T guys helped out.

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