[Q] Network unlock request unsuccessful (SGH-I747M - Running SlimKat 4.4.4)

brando9 · Jul 29, 2014

Just purchased an unlock code from Telus but it does not work. I know some posts mentioned it only works with a stock dialer app.
Is there anything else I can try before attempting that?

If not, what stock rom can I even use? And is there a guide available?

Sorry if this has been asked before. I had trouble finding any answers.

Thank you.

DocHoliday77 · Jul 29, 2014

Just flash your stock firmware with Odin.

audit13 · Jul 30, 2014

The boot loader on your phone will determine which firmware to load on your phone.

If you have the 4.3 bootloader, don't flash 4.1.1 or 4.1.2.

brando9 · Jul 30, 2014

Flashed stock rom, booted with sim inserted, and entered the unlock code when asked. It worked! Thanks for the reassurance, I was hesitant.

Here are some links I came across that might help others.

Downloaded latest ROM for my carrier: http://samsung-updates.com/device/?id=SGH-I747m

Got Odin from this post: http://xdaforums.com/showthread.php?t=1722686

Followed these threads to flash with Odin:
http://xdaforums.com/galaxy-s3/help/guide-odin-flash-guide-t1671969
http://xdaforums.com/showthread.php?t=2789917
http://xdaforums.com/showthread.php?t=1722686

Read the CyanogenMod guide to install SlimKat: http://wiki.cyanogenmod.org/w/Install_CM_for_d2att

SlimKat XDA thread: http://xdaforums.com/showthread.php?t=2758209
Root: http://slimroms.net/index.php/faq/slimbean/441-how-do-i-enable-root

Downloaded Texdroider DPI from the play store to change to S3 default (320)

Then I thanked everyone I could! :victory:

Notes

* I forgot to wipe my device before and it still worked.
* TWRP would not read my SD card for some reason.
* Good info threads:
http://xdaforums.com/showthread.php?t=1725839
http://xdaforums.com/showthread.php?t=1802160

DocHoliday77 · Jul 31, 2014

Glad to hear you got it to work! Couple things for extra knowledge. ..

You can also get firmware from http://sammobile.com/firmwares. Their downloads are much faster than samsung-updates IME.
Easiest root method ever! - Towelroot (shouldn't trip the warranty bit either)

If I'm not mistaken, the recoveries having problems reading the sd card is due to your hardware version. I believe they found a solution in the Sprint forums, but I haven't had a chance to read up on it yet. If its something I can do I'll probably try to fix the T-Mobile and AT&T recoveries. I may be mistaken on some of that, but its how I understood it after a quick search the other day.

yoonus · Feb 25, 2015

Need help for flashing stock rom

Hi,

Can you please clarify few things for me?

I have an ATT Galaxy S3 (SGH-i747).
I am running CM11 Android 4.4.4 Baseband I747UCDMG2.

I need to go back to stock to SIM unlock the phone.

Latest ATT stock rom is 4.1.1 with I747UCDLK3.

Will flashing to stock ATT ROM brick the phone?
What is the best way to go back to stock ROM?

Thanks,

brando9 · Feb 25, 2015

I have an ATT Galaxy S3 (SGH-i747).

My phone was the same; except being the Canadian version.

I am running CM11 Android 4.4.4 Baseband I747UCDMG2.

I think I had CM 4.4.4 before going back to stock. It was kitkat for sure tho.

Will flashing to stock ATT ROM brick the phone?

It shouldn't. But of course anything can happen.

What is the best way to go back to stock ROM?

Using ODIN I believe. I read through all the links I posted above but I guess this one was the easiest to follow.
http://xdaforums.com/galaxy-s3/help/guide-odin-flash-guide-t1671969

Hope that helps, it has been a while lol. Maybe someone with more experience will chime in :good:

yoonus · Feb 25, 2015

brando9 said:
My phone was the same; except being the Canadian version.

I think I had CM 4.4.4 before going back to stock. It was kitkat for sure tho.

It shouldn't. But of course anything can happen.

Using ODIN I believe. I read through all the links I posted above but I guess this one was the easiest to follow.
http://xdaforums.com/galaxy-s3/help/guide-odin-flash-guide-t1671969

Hope that helps, it has been a while lol. Maybe someone with more experience will chime in :good:

Thanks for quick reply.
Bootloader on mine is I747UCDMG2 which is from 4.1.2. Hence I should be ok to go to stock 4.1.1 ROM.
I am reading few other posts before making the move.

audit13 · Feb 25, 2015

Flashing the USA version of the s3 (i747) with any i747 firmware from sammobile in Odin can brick your phone us you have a 4.3 bootloader or higher.

Since you are on 4.1.2 bootloader, flash the stock ATT 4.1.1 ROM from sammobile.com using Odin. After flashing, do a full wipe in recovery. Boot the phone and use the free method to permanently sim unlock your phone.

After unlocking your phone, you can run OTA updates to get to the latest stock ROM, bootloader, and modem.

yoonus · Feb 26, 2015

Just confirmed bootloader and baseband are I747UCDMG2.
I will update here how everthing goes.
PS: I DON'T want to go to I747UCUEMJB bootloader after unlock. That will mean, I will not be able to downgrade in future. AFAIK, I747UCUEMJB bootloader is also locked.

mrrocketdog · Feb 26, 2015

yoonus said:
Just confirmed bootloader and baseband are I747UCDMG2.
I will update here how everthing goes.
PS: I DON'T want to go to I747UCUEMJB bootloader after unlock. That will mean, I will not be able to downgrade in future. AFAIK, I747UCUEMJB bootloader is also locked.

correct in that you will not be able to downgrade (serious risk of bricking your device).
bootloader is not locked on the S3 AFAIK. (bricked my s3 on mj2 trying to 'unlock' an already unlocked bootloader.).

"all i can really do , is stay out of my own way and let the will of heaven be done"

dawgdoc · Feb 27, 2015

mrrocketdog said:
correct in that you will not be able to downgrade (serious risk of bricking your device).
bootloader is not locked on the S3 AFAIK. (bricked my s3 on mj2 trying to 'unlock' an already unlocked bootloader.).

"all i can really do , is stay out of my own way and let the will of heaven be done"

I agree that the bootloader is unlocked.
I think at times people are calling the newer bootloaders locked because they are unable to downgrade them. Whereas we are calling them unlocked because we can still root them and flash custom/unsigned ROMs.

audit13 · Feb 27, 2015

ATT has been locking the bootloader on other phones such as the Note 3, HTC One XL, and the Moto G so I'm not surprised that owners think their bootloader is locked.

yoonus · Feb 27, 2015

audit13 said:
ATT has been locking the bootloader on other phones such as the Note 3, HTC One XL, and the Moto G so I'm not surprised that owners think their bootloader is locked.

True. I have an ATT S5 and is really annoyed with locked bootloader.

yoonus · Mar 30, 2015

flash to stock successful

yoonus said:
Just confirmed bootloader and baseband are I747UCDMG2.
I will update here how everthing goes.
PS: I DON'T want to go to I747UCUEMJB bootloader after unlock. That will mean, I will not be able to downgrade in future. AFAIK, I747UCUEMJB bootloader is also locked.

Thanks all for the assurance and support.

I was able to ODIN to stock ROM and SIM unlock the phone.

Background: My ATT S3 i747 was running CM11 Android 4.4.4. Baseband and Bootloader was I747UCDMG2.

Steps:
1. Flashed rooted stock ROM (root66_ATT_I747UCDLK3.7z) using odin from http://xdaforums.com/showthread.php?t=1739426
Followed the steps in OP.
After flash ODIN showed PASS and phone rebooted. It was stuck in Samsung logo. I booted into recovery. Performed a wipe cache and factory restore.
Phone rebooted successfully after that.
2. Inserted non-ATT SIM and it asked for the unlock code. I had obtained the code from ATT before. Used the code and phone was unlocked.
The same code did not work while I was running CM11.

NOTE: When running stock ROM you can follow steps in below threads if direct unlock did not work for you.
1. http://xdaforums.com/showpost.php?p=58671214&postcount=152
2. http://xdaforums.com/showthread.php?p=38767845#post38767845 This works only with stock 4.1.1 image (LK3 modem).
See http://xdaforums.com/showpost.php?p=59029460&postcount=323

NOTE: If you need TWRP recovery, see http://xdaforums.com/showthread.php?t=1739426 and search for "Odin Flashable TWRP Recovery" in OP.
You can download ODIN flashable TWRP from there.

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[Q] Network unlock request unsuccessful (SGH-I747M - Running SlimKat 4.4.4)

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