[Q] Traveling to Europe but can't unlock phone (CM11) - AT&T, Rogers, Bell, Telus Samsung Galaxy S III

I have searched and searched and can not figure out how to unlock this phone.
I am currently running CM 11 2014 05 04 snapshot
Kernal 3.4.87-cyanogenmod-gf485c9a
Ofcourse Galaxy S3 on AT&T
I have tried the *#197328640# but absolutely nothing happens
I contacted at&t for the unlock code. They send me one, I inserted a tmobile sim, get prompted for the code, put it in and it prompts me again.
In the email from at&t I was warned that if I type the code in 5 times the phone will become permantly locked to at&t so I only did it twice so far.
I have read posts that I need to be on 4.1.1 for the *#190xxxxxxx to work but at the same time I see multiple posts saying that it will brick my phone if I downgrade.
Any help would be VERY appreciated

If you do not have the 4.3 bootloader or newer, you can use Odin to downgrade your ROM to 4.1.1, unlock it, and upgrade.
If you do have the 4.3 or newer bootloader, you must purchase an unlock code. If you purchase an unlock, you will probably have to be running a stock ROM in order to get the prompt to enter your unlock code.

Yup. Flash stock and enter the code from a stock dialer and ut should work.

I already have the code from ATT so I'll flash stock and try that
Thx alot

-deleted
Sent from my SAMSUNG-SGH-I747 using XDA Free mobile app

Related

[Q] [Solved] Unable to unlock Note II (SGH-i317m)

Hello XDA and Happy New Year!
I have a rooted Note II sgh-i317m locked to Bell Mobility. I would like to use it with another carrier. I have asked one source for an unlock code, and verified that he received the correct IMEI for the phone, but he said he was unable to get one. I have tried "00000000" but that doesn't work.
I rooted it to try GalaxSim Unlock from the Play store. GalaxSim says it is incompatible with this device. When I click "show details" I get "undefined" for IMEI, Sim Lock status, Product code, Serial Number, and all the rest of the fields. (I believe the app is using the android SDK to query the device for these settings and getting nulls.)
Rooting was a piece of cake with Odin, but how do I unlock my phone?
HB
edited to add details:
Android 4.1.1
Build number JRO03C.I317MVLALJ2
My root method was from galaxynote2root.com; it apparently doesn't touch the firmware.
try this method?
http://forum.xda-developers.com/showthread.php?t=2014982
Yes, this worked just fine! I am now happily using my Note 2 unlocked from Bell (AKA Hell) Mobility on Fido LTE.
Sent from my SGH-I317M using xda app-developers app
rogers sgh-i317m
HELP! I have a note 2 from rogers, i recently tried to do the service mode unlock. (#*197328640#) followed the instructions but i was missing the option 4 nv data. found out later that it was 4.1.1 i had 4.1.2. So got impatient took it to the local cell unlocker fella. He ran into trouble with entering the unlock code then attempted a process that reversed what i did and entered the code, this seemed to work the unlock with the code was successful. Or so it seemed until i inserted my telus sim card then my $780 dollar phone that i just paid cash 2 days ago wont accept the sim or any other including rogers. I tried rooting and i put 4.1.1 back on this got me to the point where it will accept a rogers sim but data will only run edge and call out if i set it to gsm only in network settings this is the only way it will accept a rogers sim only
unlocked
me too , i can not unlock my note 2 canada sgh-í7m
Does this method work if im on the latest 4.3 from Bell?
umirza85 said:
Does this method work if im on the latest 4.3 from Bell?
Click to expand...
Click to collapse
No.
i know it a little late but if there are still people reading this today, well... this worked for me, and you need to be on 4.1.x variant of the note 2 i317/m rom.
I was initially on a 4.4.2 Koodo variant and downgraded it to a 4.1.1 Bell variant before i was able to successfully unlock the phone, since anything after 4.1.x that method is blocked/unavailable/patched. After i was done, my Videotron sim card was accepted and LTE is working flawlessly. Flashing Bells 4.4.2 rom posed no issues and phone was back to normal. Software updates were being checked normally (even tho no official lollipop will ever come from Samsung... but just saying) and nothing was acting out of the ordinary.
only problem is (but shouldn't really be anymore) that your KNOX counter will trip and will stay stuck at 1 due to some hardware thingy being physically changed. This is because of the Security enhancements being violated when downgrading from 4.4.x to 4.1.x. (kitkat to jellybean is a big nono to the SE, but the other way around or kitkat to kitkat is fine)
if any issues or questing feel free to ask GL

[Q] How to unlock SGH-i747m

How do I unlock the phone? I currently have Cm11 on it.
I want to ditch rogers (terrible service) so what do I need to do to unlock it?
side note, when I got the phone it was via future-shop warranty and they gave me a fido version and put my rogers sim in it, did they unlock it then?
SpacePotato said:
How do I unlock the phone? I currently have Cm11 on it.
I want to ditch rogers (terrible service) so what do I need to do to unlock it?
side note, when I got the phone it was via future-shop warranty and they gave me a fido version and put my rogers sim in it, did they unlock it then?
Click to expand...
Click to collapse
Since Fido is really owned by Rogers, your Rogers SIM may work in the phone if it was originally locked to Fido. To check whether it's unlocked or not, try putting in a non-compatible SIM (like Bell or Telus) and see whether it prompts you for an unlock code. If it does, you would need to purchase a code online or request one from the carrier. If it wasn't on Android 4.3 prior to the CM11 installation, you may be able to install stock Android 4.1.1 and free unlock. Either way, whether you are free unlocking or using an unlock code, you have to be on a stock ROM for it work. You can check your phone's settings and see what baseband and bootloader versions you have. This will tell us know whether you should flash stock 4.1.1 or 4.3
Larry2999 said:
Since Fido is really owned by Rogers, your Rogers SIM may work in the phone if it was originally locked to Fido. To check whether it's unlocked or not, try putting in a non-compatible SIM (like Bell or Telus) and see whether it prompts you for an unlock code. If it does, you would need to purchase a code online or request one from the carrier. If it wasn't on Android 4.3 prior to the CM11 installation, you may be able to install stock Android 4.1.1 and free unlock. Either way, whether you are free unlocking or using an unlock code, you have to be on a stock ROM for it work. You can check your phone's settings and see what baseband and bootloader versions you have. This will tell us know whether you should flash stock 4.1.1 or 4.3
Click to expand...
Click to collapse
Baseband is I747MVLUEMK5 bootloader I have no idea, I just used odin to flash CWM.
I'm open to flashing 4.1 to get a free unlock then going back to CM11
SpacePotato said:
Baseband is I747MVLUEMK5 bootloader I have no idea, I just used odin to flash CWM.
I'm open to flashing 4.1 to get a free unlock then going back to CM11
Click to expand...
Click to collapse
I747MVLUEMK5 is ver. 4.3 and you almost certainly have the 4.3 bootloader as well. With this, unfortunately, you can't downgrade to 4.1.1 where the free unlock option is available as any attempt to do this could brick your phone. You would need to request an unlock code from the carrier, if eligible, or purchase one online. There have been reports also that the unlock codes don't work when you are on a custom ROM so if you buy one online and it doesn't work, you will have to flash stock 4.3.
Larry2999 said:
I747MVLUEMK5 is ver. 4.3 and you almost certainly have the 4.3 bootloader as well. With this, unfortunately, you can't downgrade to 4.1.1 where the free unlock option is available as any attempt to do this could brick your phone. You would need to request an unlock code from the carrier, if eligible, or purchase one online. There have been reports also that the unlock codes don't work when you are on a custom ROM so if you buy one online and it doesn't work, you will have to flash stock 4.3.
Click to expand...
Click to collapse
ok, which carrier would I have to talk to, it was a fido phone as mentioned previously. Also is their a possibility I could downgrade to 4.1, or is it a guaranteed brick?
SpacePotato said:
ok, which carrier would I have to talk to, it was a fido phone as mentioned previously. Also is their a possibility I could downgrade to 4.1, or is it a guaranteed brick?
Click to expand...
Click to collapse
You would need to contact Fido since it was originally on their network. I'm afraid nobody has yet posted a method to allow you successfully downgrade to 4.1.1 and still preserve the free unlock functionality. You could follow some instructions posted in this forum to downgrade to 4.1.1. However, this wouldn't allow you downgrade the bootloader/modem which is required for the unlock.
Larry2999 said:
You would need to contact Fido since it was originally on their network. I'm afraid nobody has yet posted a method to allow you successfully downgrade to 4.1.1 and still preserve the free unlock functionality. You could follow some instructions posted in this forum to downgrade to 4.1.1. However, this wouldn't allow you downgrade the bootloader/modem which is required for the unlock.
Click to expand...
Click to collapse
ok thanks.
Larry2999 said:
I747MVLUEMK5 is ver. 4.3 and you almost certainly have the 4.3 bootloader as well. With this, unfortunately, you can't downgrade to 4.1.1 where the free unlock option is available as any attempt to do this could brick your phone. You would need to request an unlock code from the carrier, if eligible, or purchase one online. There have been reports also that the unlock codes don't work when you are on a custom ROM so if you buy one online and it doesn't work, you will have to flash stock 4.3.
Click to expand...
Click to collapse
I found a way to downgrade from 4.3 to 4.1.1 or 4.0.4 stock. (for Bell).
I bought and used Mobile Odin (available on the play store). Anyhow, it flashes the stock rom and not the old bootloaders. Once you're on 4.1.1 or 4.0.4 the problem is that *#197328640# no longer works. Basically when you type that ServiceMode comes up, but all the options are gone. I believe this is because they locked those features on the new bootloader (which is still on the phone after the Mobile Odin downgrade...)
Unlocking this phone has become a major pain in the ass.
htc_softbank said:
I found a way to downgrade from 4.3 to 4.1.1 or 4.0.4 stock. (for Bell).
I bought and used Mobile Odin (available on the play store). Anyhow, it flashes the stock rom and not the old bootloaders. Once you're on 4.1.1 or 4.0.4 the problem is that *#197328640# no longer works. Basically when you type that ServiceMode comes up, but all the options are gone. I believe this is because they locked those features on the new bootloader (which is still on the phone after the Mobile Odin downgrade...)
Unlocking this phone has become a major pain in the ass.
Click to expand...
Click to collapse
You are quite right. Sam and the networks are winning this time. You can indeed use Mobile Odin to downgrade the system (ROM). However, there hasn't been any reports of a successful downgrade of the bootloader. Therefore, even if you downgrade without bricking the phone, you can't free unlock. Tough but you will need a carrier unlock code.

How to sim unlock the trac phone sgh-s970g galaxy s4...and possibly others

Ok so this is still a work in progress but it works, and lte works on my att and tmobile sims. Ill post as many screen shots and be detailed as I possibly can so bear with me.....
So i have a samsung galaxy s4 the sgh-s970g, and a customer needed it unlocked so I thought I would give it a try. Its been a fun phone to mess with. So I am on 4.2.2 and this is the only version I have tested on. I havent tested on 4.3 so let me know if it works for you.
So my baseband is MH3. I used saferoot to root the phone and then I used the twrp for the m919 version to get a custom recovery. after this i went into recovery and made a nandroid. I would advice you do the same if your going to try this, because I am in no way responsible for anything that happens to your phone it will trip your knox counter and your warranty is now void.
ok so I have a tmobile sim in the phone the whole time because it gives you a invalid sim message and when you get rid of that the phone is unlocked. Now I flashed the wicked v-8 4.2.2 custom m919 rom onto the phone. And after that i booted it up like normal and had no problems booting it. So when it finally boots up this is what I see....
know with the tmobile rom it is asking for a sim unlock code. This is where it gets a little tricky.. Youll need to download region lock.apk
you can get it from the play store or from the developer on xda, (great app by the way). So now is when i procedded to use spt box to unlock part of this but i believe you can do it without the spt. so just set your phone up and when your done your settings should look like this... youll still have straight talk radio but everything else including kernel is the tmobile m919.
Ok so now go ahead and open up the region unlock apk and instead of pressing unlock your going to lock it. when its done go ahead and reboot it and then its going to ask your for a password again but this time you know it.. Its going to be 00000000, or atleast it was for me but like I said i dont believe spt is needed to reset the efs i believe the region lock apk will do this and it shoould say unlock succesful like this...
the only kicker is anytime you reboot your phone your going to have to run region lock and lock your modem and then reboot and type in the 8 zeros to unlock if someone figures out a better way that would be awesome.. I also believe this method could be used to help unlock the s4 l720t and sm-n900p without the assisstance of sprint. Any feedback and help would be greatly appreciated and enjoy your unlocked phone....
hi bro
robhuffster said:
the only kicker is anytime you reboot your phone your going to have to run region lock and lock your modem and then reboot and type in the 8 zeros to unlock if someone figures out a better way that would be awesome.. I also believe this method could be used to help unlock the s4 l720t and sm-n900p without the assisstance of sprint. Any feedback and help would be greatly appreciated and enjoy your unlocked phone....
Click to expand...
Click to collapse
hi bro, my question is, i have one L720T for unlock this, i need root with m919 ? and unlock with SPT BOX ???
robhuffster said:
Ok so this is still a work in progress but it works, and lte works on my att and tmobile sims. Ill post as many screen shots and be detailed as I possibly can so bear with me.....
So i have a samsung galaxy s4 the sgh-s970g, and a customer needed it unlocked so I thought I would give it a try. Its been a fun phone to mess with. So I am on 4.2.2 and this is the only version I have tested on. I havent tested on 4.3 so let me know if it works for you.
So my baseband is MH3. I used saferoot to root the phone and then I used the twrp for the m919 version to get a custom recovery. after this i went into recovery and made a nandroid. I would advice you do the same if your going to try this, because I am in no way responsible for anything that happens to your phone it will trip your knox counter and your warranty is now void.
ok so I have a tmobile sim in the phone the whole time because it gives you a invalid sim message and when you get rid of that the phone is unlocked. Now I flashed the wicked v-8 4.2.2 custom m919 rom onto the phone. And after that i booted it up like normal and had no problems booting it. So when it finally boots up this is what I see....
know with the tmobile rom it is asking for a sim unlock code. This is where it gets a little tricky.. Youll need to download region lock.apk
you can get it from the play store or from the developer on xda, (great app by the way). So now is when i procedded to use spt box to unlock part of this but i believe you can do it without the spt. so just set your phone up and when your done your settings should look like this... youll still have straight talk radio but everything else including kernel is the tmobile m919.
Ok so now go ahead and open up the region unlock apk and instead of pressing unlock your going to lock it. when its done go ahead and reboot it and then its going to ask your for a password again but this time you know it.. Its going to be 00000000, or atleast it was for me but like I said i dont believe spt is needed to reset the efs i believe the region lock apk will do this and it shoould say unlock succesful like this...
the only kicker is anytime you reboot your phone your going to have to run region lock and lock your modem and then reboot and type in the 8 zeros to unlock if someone figures out a better way that would be awesome.. I also believe this method could be used to help unlock the s4 l720t and sm-n900p without the assisstance of sprint. Any feedback and help would be greatly appreciated and enjoy your unlocked phone....
Click to expand...
Click to collapse
Great news, i read your post on gsmforum and i was waiting for this post. will try the same on other model.
pl share the download link for tmobile rom.
Thanks a lot for your great work.
here
javed91214 said:
Great news, i read your post on gsmforum and i was waiting for this post. will try the same on other model.
pl share the download link for tmobile rom.
Thanks a lot for your great work.
Click to expand...
Click to collapse
its the wicked v8 if your on 4.2.2 or lower and and its v10 if your on 4.3 or higher just look on xda under the m919 youll find it
robhuffster said:
its the wicked v8 if your on 4.2.2 or lower and and its v10 if your on 4.3 or higher just look on xda under the m919 youll find it
Click to expand...
Click to collapse
i tried wicked v8 and v10 both on L720T , but i am getting Invalid sim card error.
javed91214 said:
i tried wicked v8 and v10 both on L720T , but i am getting Invalid sim card error.
Click to expand...
Click to collapse
Region away app works only up to 4.3, so I guess you need to downgrade the baseband to L720T's MK3 modem.
No harm in trying.
Ive tried that
bigbyte.me said:
Region away app works only up to 4.3, so I guess you need to downgrade the baseband to L720T's MK3 modem.
No harm in trying.
Click to expand...
Click to collapse
the l720t was actually shipped with a 4.2.2 rom and if you could find that modem for the 4.2.2 it was originally shipped with you can unlock it
robhuffster said:
the l720t was actually shipped with a 4.2.2 rom and if you could find that modem for the 4.2.2 it was originally shipped with you can unlock it
Click to expand...
Click to collapse
I can only find a 4.3 ROM for L720T not any version before it.
So, just to clarify, do we have to use the ROM or can we do this on stock? I have two of these LTE-T marked phones from Straight Talk that I'd like to use AT&T Straight Talk SIMs with.
tried this on a stock tmobile mdl firmware with the mh3 baseband with no go.. What am i doing wrong?
Has anyone been able to unlock these tracfone devices officially through a tracfone provided unlock code???
imzjustplayin said:
Has anyone been able to unlock these tracfone devices officially through a tracfone provided unlock code???
Click to expand...
Click to collapse
Yes i have, Tracfone will have to provide an update to fix the issue. Reason is that everytime you enter the code its accepted. But as soon as you reboot the phone it asks for the code again. So not sure how tracfone will handle this.
Well I returned my $250 Black Friday special as I just have no faith in getting an unlock code for these Galaxy S4s as I wanted to use it on AT&T and I had picked up the Tmobile version. I'll have to settled for a used item instead.
So will this phone work with a straight talk att Sim and a tmo Sim as long as its through ST?
After fallowing all the steps I get to the 8 0's hit enter and it just sits at the screen, and says unsuccessful. Sgh-s970g bb:mh3 av:4.2.2
Anyone know of a pay site to unlock this device. The one legit one was for over seas and I'm in US. I tried offering straight talk money and they said this phone needs to be active for 5 more months before they'll provide me the unlock code. I guess you need 12 months of active service to be eligible for the unlock program. The only thing is, is it will only work on a straight talk T-Mobile Sim until then. Tia.
It DOES work. I installed the wikid v8 rom on a SHG-S970G this morning, opened region lock, unlocked modem, relocked modem rebooted, and entered my unlock code and BAM, Successful unlock. Thanks a grand! By the way i bought the unlock code on a 3rd party site. Im now running ATT on the phone.
Straighttalk will only unlock phones purchased on or after Dec 2013, currently active on ST Service & have been active for 12 consecutive months, if you call the unlock department you will be transferred to their automated information center if your phone is not eligible for unlocking, this is just to inform you of the requirements to unlock your device.
ST unlock
I've had mine 6 months... Called them 5 times and they told me everytime they couldn't unlock my phone (sgh s970g). So.. I used CHIMURA to root for free. Installed the m919 twrp for recovery. Installed wikid v8 using twrp installed regionlockaway locked the modem rebooted, entered my unlock code and it gave me a successful unlock. As stated I'm running a Straighttalk AT&T sim on mine.
Extrapolate to S5?
james4117 said:
I've had mine 6 months... Called them 5 times and they told me everytime they couldn't unlock my phone (sgh s970g). So.. I used CHIMURA to root for free. Installed the m919 twrp for recovery. Installed wikid v8 using twrp installed regionlockaway locked the modem rebooted, entered my unlock code and it gave me a successful unlock. As stated I'm running a Straighttalk AT&T sim on mine.
Click to expand...
Click to collapse
Do you think a similar technique can be applied to a Galaxy S5 from Net10/TracFone? I tried to use a S902L with my (Canadian ) Rogers SIM card and unsurprisingly, it didn't accept it

Experiences SIM unlocking SGH-I747 (Galaxy S III) AT&T 4.3 with codes

Has any one had positive experiences with SIM unlocking the AT&T sgh-i747 (Galaxy S III) after the 4.3 update with a code??
I paid $14.99 to SamMobile to unlock using their software but it didn't work and they don't answer my emails. But that's not with a code
Admins: if there is a thread for this already, please point me to it. I could not find one with successes after the 4.3 update
Note that AT&T didn't want to give me a code: I had cancelled the service already and paid the ETF (foolish, I know), and now they don't care about me
I've seen plenty if users have success unlocking with a code. I don't know about how sammobile does it though.
You have to be stock for it to work BTW.
Sent from my SAMSUNG-SGH-T999 using Tapatalk
Thanks doc. By "stock" you mean the official ROM without root? As I said, it's not the original version (4.1.1) but the OTA update to 4.1.3 by AT&T
I will have to buy some code
Root doesn't matter. Many custom stock based ROMs will also work but some may have removed some needed files which is why I just said stock. As long as its stock based and has the stock dialer it should work though.
Sent from my SAMSUNG-SGH-T999 using Tapatalk
So, no one has any experience to share? has anyone unlocked a Galaxy S III 4.3 with a code? It's OK if you prefer to PM that info to avoid being interpreted as advertising
Official AT&T Unlock Code Fails
My contract ended id-September so I requested an unlock code, which was previded (below). I sent two separate requests for the unlock code and the number provided twice matches. I tried the unlock code (while using a T-Mobile SIM card) twice and the phone said the code was incorrect.
I prepared the phone by doing a factory reset. These are the phone details:
Model number
Samsung-SGH-I747 running
Android version
4.4.2
baseband
I747UCUFNE4
kernel
3.4.0-1514807
[email protected] #1
Mon May 19 21:00:05 KST 2014
Build number
KOT49H.I747UCUFNE4
These are the instructions provided:by AT&T:
Thank you for contacting AT&T Customer Care about unlocking your AT&T Mobile device. We have reviewed your request and confirmed that the device may be unlocked. You should complete the unlock process before porting out your number for use with another carrier. Please allow 24 hours upon receipt of this notification to complete the unlock process.
Your Unlock Code is :12345678
Unlock Steps - Use Non-AT&T SIM Card
1. Power off the device and insert a non-AT&T SIM card.
2. Power on the device.
3. Network Lock displays: Enter the device unlock code.
4. Enter the eight-digit unlock code.
5. Press OK.
Note: You are allowed five attempts to unlock before your device permanently locks to the AT&T network. Note: If your device has been altered from the original manufacturer's standards, such as rooting the device, your unlock code may not work and you will need to contact the original manufacturer for assistance.
For questions regarding AT&T Mobile device, please visit the Phone/Device Learning Center. Thank you for your business. For other questions about our AT&T wireless service or other Mobile devices, please visit att.com.
I've tried the unlock twice and it did not work. The phone is rooted. I think I manually installed 4.4.2 because the OTA failed many time to update.
I think these instructions are confusing in that step 3 and step 4 both say enter the unlock code. Is there a second code? I thought an phone unlock code is a single 8-digit number.
I have successfully unlocked an old HTC Aria so I have a little bit of experience performing unlocks. But if you have advice I'd appreciate hearing your thought.
wpscully said:
My contract ended id-September so I requested an unlock code, which was previded (below). I sent two separate requests for the unlock code and the number provided twice matches. I tried the unlock code (while using a T-Mobile SIM card) twice and the phone said the code was incorrect.
I prepared the phone by doing a factory reset. These are the phone details:
Model number
Samsung-SGH-I747 running
Android version
4.4.2
baseband
I747UCUFNE4
kernel
3.4.0-1514807
[email protected] #1
Mon May 19 21:00:05 KST 2014
Build number
KOT49H.I747UCUFNE4
Click to expand...
Click to collapse
Forgive me for asking but is your phone running a stock ATT ROM? Does the imei obtain from the phone match the imei on the label under the battery?
audit13 said:
Forgive me for asking but is your phone running a stock ATT ROM? Does the imei obtain from the phone match the imei on the label under the battery?
Click to expand...
Click to collapse
Yes, the IMIE shown on the label and via About device --> Status are identical. I asked AT&T twice for the unlock code because I thought maybe I sent the wrong code. I'm 99.9% sure the IMIE number I used is correct.
Yes, the flavor of Android installed is the AT&T version. If I recall, in August 2014 I used ODIN to manually install 4.4.2 because the over-the-air update was not working. (The OTA would download but fail to install. I'd wait for two or three days before I could try a second, third, forth... time.) I have also done a reset via Accounts --> Backup and reset. The MicroSD card was erased too, through the reset process. The lock screen, the home screen, all the typical AT&T add-on applications seem to be as they were when I purchased/upgraded the phone two years ago.
4.4.2 is rooted and I have Chainfire's SuperSU v2.00 Pro installed.
I should mention this: When I look at About device --> Status, all the way at the bottom, is "Device status" which shows "Custom". This isn't a setting. I suppose this is why the network unlock code is not working.
I'm not sure what to do next. I can't recall the page on XDA which guided me through the install of 4.4.2. I'll look a little harder because I'm sure I used XDA as my guide for the upgrade. Perhaps I'll try to install a non-root 4.4.2 image.
I never expected that I'd have five and only five tries at network unlock. I've used three tries... I need to make sure the last two work! Any advice is appreciated.
Sorry, I'm out of ideas. All I can suggest is flashing back to completely stock with stock recovery and no root access.
someniceguy said:
Note that AT&T didn't want to give me a code: I had cancelled the service already and paid the ETF (foolish, I know), and now they don't care about me
Click to expand...
Click to collapse
In my case AT&T told me they would not give me a code until I paid off my contract. I would seem they don't care about their former or current customers.
I showed them though, I was still on 4.1.2 and simply donwgraded my modem and used the free unlock method. It's now time to upgrade to kitkat.
@wpscully
Don't know if you still need help, but maybe this would do the trick? I think it's the last post that's describing a different method of getting the unlock code to work.
http://forum.xda-developers.com/showthread.php?p=55677344
Sent from my SAMSUNG-SGH-I747 using Tapatalk
@DocHoliday77, your pointer you mention above has proven invaluable. For the record here is the link I used; http://forum.xda-developers.com/showpost.php?p=55677344&postcount=137 MrBrown72 has a secret code and menu selections which seem to tell my phone to ignore all the customizations I made (root, maybe removing some AT&T bloat) and accept the valid network unlock code AT&T provided when my contract ended. The phone is now working on T-Mobile, rooted still, and none the worse for wear. I also want to thank Audit13 for advice on what not to do, and well as his guiding me so I found the hints that the phone considered itself "custom".
Finally I'll mention that if I had not been able to unlock this phone I never, ever would have selected AT&T as a cell provider. In this process they were professional, respectful, and helpful. T-Mobile didn't get my old line transferred before my AT&T contract ended. AT&T probably could have made clearing up this transfer very hard. But they were kind, understanding and efficient in reinstating my old number briefly so T-Mobile could finish the transfer.
I know others have had trouble with vendors. I wish all companies could understand that being unhelpul or rude is the fastest way to lose a customer for life.

need help finding a stock based ROM

Attached is a screenshot of the relevant info about what I'm on now. What I need to know is what stock based ROM can I flash on this device? I need to unlock it for use on T-Mobile, but the unlock code from at&t isn't working. The only method that has worked for other people when it won't take the provided unlock code is to use *#197328640# to turn on the "Perso Sha256" option, then restart the phone and it should accept the unlock code after that.
The problem is, I'm on a slim/AOSP based ROM so the Samsung dialer codes don't work. So I need to know which Samsung based ROM to flash on this device that won't brick it. Not sure what my bootloader version is, but I can check that if necessary. Someone please help!
The free unlock method only works on a stock 4.1.1 dialler, bootloader, and ROM.
Boot into download mode. Do you see anything about Knox or warranty bit? If yes, you can't use the free method and you'll have to buy an unlock code or convince at&t to give you a code for free.
audit13 said:
The free unlock method only works on a stock 4.1.1 dialler, bootloader, and ROM.
Boot into download mode. Do you see anything about Knox or warranty bit? If yes, you can't use the free method and you'll have to buy an unlock code or convince at&t to give you a code for free.
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You're the second person to misunderstand what I'm asking for lol. I do not want to use the code-less unlock method. I have an unlock code from the carrier. It will not accept the code with Perso Sha256 turned off though, so I need to be able to turn it on so the phone will accept the unlock code from the carrier. CM/AOSP-based roms don't accept samsung dialer codes, so I'm not able to access the menu to turn it on. I'm looking for a stock-based rom that will work with my current baseband so that I can use the samsung dialer codes.
Is the phone a i747 or i747m? It can be confirmed in download mode as it is a very important distinction.
audit13 said:
Is the phone a i747 or i747m? It can be confirmed in download mode as it is a very important distinction.
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Click to collapse
It's i747
Though I solved this on my own and I'm going to mark the thread as solved and provide a link to the ROM I used in case someone else has this issue. Using an old 4.3 version of venom ROM I was able to use the Samsung dialer code to turn Perso Sha256 on and after a reboot, the phone finally accepted the unlock code from at&t and immediately registered to the T-Mobile network with data, voice and SMS working perfectly.
There's enewmans's S3 Rx custom ROM based on the Android 4.4.2 stock ROM.

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