[Q] Samsung SGH I747 - Restock Original OS - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

Hello,
I have installed CyanogenMOD on my Samsung S3 (SGH- I747(AT&T)... Before installing CMOD i had Android 4.3...
Sinc 4.3 had lot of issues, i decided to root my device and installed CMOD....
Now I want to restock to my original ROM(AT&T I747 UCUEMJB Stock Restore).. How should I do it... Please help..
Is it advisable to download the original ROM from "samsung-updates.com" and simply flash it using ODIN..
Please advise

Do you have the 4.3 or newer bootloader on your phone? If you do, do not flash any ROMs that try to downgrade your bootloader. Attempts to downgrade from your current bootloader could brick the phone.
This might help if you're on a stock 4.3 bootloader: This might help: http://forum.xda-developers.com/showthread.php?t=2722660
If you have the 4.1.1 or 4.1.2 bootloader, you can flash a stock ROM via Odin and OTA to 4.3.

Related

[q] 4.3 jellybean ota questions

I've got a Galaxy S3 I747 it is currently running 4.1.1, I747UCDLK3 Baseband. I'm not exactly a noob when it comes to flashing and rooting, I know my way around CWM and Odin pretty well. But I have a few questions on this 4.3 OTA. (I am a forum noob)
-Will I still be able to root? (I heard CF works for it)
-Can I install CWM? (Is the Bootloader locked??)
-Will I be be able to I flash other roms than the 4.3 TW like CM11Snapshot? (Is the bootloader locked?)
-What the h*ll is knox and why should I be worried?
-What is with the boot loader downgrading thing? (Have to do with locked bootloader??)
I AM NOT AT ALL WORRIED ABOUT A FLASH COUNTER OR VOIDING A WARRANTY I AM NOT ON A CONTRACT . I JUST DO NO WANT TO HARD BRICK MY PHONE.
If you take the OTA 4.3 update, it will install Knox and the 4.3 bootloader.
The 4.3 bootloader cannot be downgraded and attempts to do so will probably brick the phone.
You can root the stock 4.3 ROM with auto root but Knox may interfere with the process of cause issues after the fact.
You can still install CWM. I rrefer Philz Touch which is CWM-based.over TWRP.
So can I still flash roms?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Yes, you can flash ROMs. Is your phone unlocked? Since you're on 4.1.1 stock, you can unlock it for free.
Personally, I avoided the 4.3 update because it installs knox and the 4.3 bootloader which can cause problems when using Odin to get back to stock.
I have a Canadian version of the s3 and I'm able to run KK ROMs with a stock 4.1.2 bootloader.
audit13 said:
Yes, you can flash ROMs. Is your phone unlocked? Since you're on 4.1.1 stock, you can unlock it for free.
Personally, I avoided the 4.3 update because it installs knox and the 4.3 bootloader which can cause problems when using Odin to get back to stock.
I have a Canadian version of the s3 and I'm able to run KK ROMs with a stock 4.1.2 bootloader.
Click to expand...
Click to collapse
Unlocked as in Bootloader? Yeah I've been able to flash roms via CWM and Odin on 4.1.1 and as in Carrier unlocked? Yes I use Straight Talk on this ATT S3
If I got the 4.3OTA I wouldn't need Odin to go back stock if I flashed a ROM would I? I could just make a back up via CWM then restore later if I wanted right rather than using ODIN?
See I can't use KK roms because I have the 4.1.1 BL so is there a way I can upgrade my boot loader to the 4.1.2 version??
Would I lose my carrier unlock if I upgraded to 4.3 or if I upgrade my bootloader??
I suggest downloading a ROM you want to try, then unzip the ROM and look at the updater script to see which bootloaders are supported. The updater-script file is located in \META-INF\com\google\android\updater-script. You can use a text editor to open the updater-script file.
The first few lines will list the bootloaders that are supported. I run Validus which is a KK ROM using a stock 4.1.2 i747m bootloader.
Do you know about this > "If I got the 4.3OTA I wouldn't need Odin to go back stock if I flashed a ROM would I? I could just make a back up via CWM then restore later if I wanted right rather than using ODIN?"
Also couldn't I just upgrade my Bootloader and Modem from here?
http://forum.xda-developers.com/showthread.php?t=2321310
http://forum.xda-developers.com/showthread.php?t=1831898
I feel like if I upgrade my boot loader then I won't have to worry about restrictions.
Would I lose my carrier unlock if I upgraded to 4.3 or if I upgrade just my bootloader??
I ended up flashing the MG2 Modem and Bootloader, I'm good now, also if I want 4.3 I saw loserskater has a leak version that will be good and wont not let me downgrade my bootloader.

[Q] Going from 4.3 to 4.4,Stock and Bootloader

Hi all i need some quick clarification,
1) I am full aware that if you purchased a Note 3 on 4.3 and you updated to stock via either OTA, Kies or Odin the bootloader is upgraded and you cannot downgrade to 4.3 stock.
2) So my question is if you are stock 4.4 and install root, install custom recovery, Can you still downgrade to a 4.3 rom via custom recovery? or will it not allow me to downgrade at all?
3) Finally You can't downgrade to a 4.3 bootloader correct?
1) correct
2) 4.3 kernels do not boot with the 4.4 bootloader, so no
3) correct
Sent from my leanKernel 2.2 powered stock 4.4.2 SM-N900T
If u have the w8 Canadian variant u can downgrade your bootloader.
thanks
toastido said:
1) correct
2) 4.3 kernels do not boot with the 4.4 bootloader, so no
3) correct
Sent from my leanKernel 2.2 powered stock 4.4.2 SM-N900T
Click to expand...
Click to collapse
is 4.4.2 that bad for the n900t?
it seems people are trying to avoid upgrading the bootloader. and are trying to downgrade if already on kitkat. whats wrong with the kitkat bootloader?

[Q] DN3

Hi. I am new to the forum and Note2 rom installations.
I am interested in installing Electron Teams DN3 V5. I have Upgraded my Note2 from stock 4.3 to stock 4.4.2 Kitkat (Knox not installed).
As the stock bootloader is upgraded from 4.3 to 4.4.2 is the procedure to root the DN3 the same or do i need a new bootloder other than MJ5.
Extreme_R said:
Hi. I am new to the forum and Note2 rom installations.
I am interested in installing Electron Teams DN3 V5. I have Upgraded my Note2 from stock 4.3 to stock 4.4.2 Kitkat (Knox not installed).
As the stock bootloader is upgraded from 4.3 to 4.4.2 is the procedure to root the DN3 the same or do i need a new bootloder other than MJ5.
Click to expand...
Click to collapse
In order to flash the newest KK rom you don't need a newer bootloader unless you want to charge your phone by turning it off.If you are on any older bootloaders they won't let you charge your phone in the powered off state ,it turns right back on. Also the latest bootloader is KNOXED meaning warranty goes out the window and you cannot go back to 4.1.2 only 4.3 is possible. Also ND3 bootloader seems to have better wifi reception for few users compared to being on older bootloaders.
ND3 bootloader
How to flash bootloder

Can't flash Liquid Smooth ROM

Hi first of all I want to ask that I had stock 4.1.2 when I bought the phone, rooted it, flashed mj5 bootloader and successfully flashed the xperia z-ized rom based on 4.3 on my N7100. Then I wished to switch to dn3 rom but I still did not like it so I reverted back to stock 4.1.2 and updated to stock 4.4.2 via OTA updates. My question is, while updating via OTA to stock 4.4.2, can it be possible that I lost my mj5 bootloader and it was replaced by samsung's proprietary bootloader?
After using stock 4.4.2 I thought to check out the LS rom so I rooted, flashed philz recovery but the ROM does not boot at all and while trying to revert back to stock 4.1.2, ODIN displays the fail message. What did I do wrong and what should I do to overcome this? Thanks.
You've locked your bootloader because you upgraded to latest official which also comes with Knoxx.

I747 downgrade

Hi my names Adrian.
I have a question about my I747. Can i downgrade my phone to oryginal firmware if i have now Android 4.4 CM 11,2. This mod based on I747UCDLK3 bootloader? If nothing bad happens to my phone if go back to stock? thanks for the reply.
You cannot flash a stock ROM that has a bootloader that is older than the bootloader currently installed on the phone.
Even flash by odin with PIT file? This method works on I9300.
Nope, can't be done with a pit file. Are you sure you can install a 4.1 bootloader over a 4.3 bootloader? I don't have the 9300 so I can't test.
Ok i understend. In 9300 not downgrade bootloader. I using 3-files ROM with new bootloader. This method allowed me back to stock from CM14.

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