Need help removing SIM-Lock, possibly reinstalling Stock Android ROM - Galaxy S III Q&A, Help & Troubleshooting

Hello,
I got an old Galaxy SIII (GT-I9300, Dutch Version) for free. However it appears to be SIM-Locked. I cannot get an unlock code from the prior owner, so I'm looking for a workaround. I heard that you can unlock the phone manually in Android 4+ (at least with European carriers).
Unfortunately, I immediately installed LineageOS 14 over the stock OS and only found out afterwards that apparently (jira.lineageos.org/browse/BUGBASH-397) LOS cannot unlock the SIM they way the Stock Android can. Is this correct?
If I need to install an original OS image (I have a Dutch one at hand already that seems to match the phone), could you point me to directions on how to accomplish this? I use Linux, so the Odin tool for Window isn't available to me. Can I do this using adb, heimdall or something similar?
Thanks in advance!

Update
I managed to flash the old Android image using heimdall. However it appears I cannot use the *#197328640# method to get to the unlock menu; I get something like "Not registered on network", which is obviously true since I'm trying to SIM unlock the phone with a new SIM card (from my current phone). I also read that Android 4.3 might not support this manual unlocking anymore the way 4.1 did.
It's free phone for me, but I might have to accept that I cannot get it to work (for free).

Nvdata unlock doesn't work after 4.1.2 as it was patched. If you want sim unlock then you must pay for it. Downgrading will not help.

Related

Stock(ish) Samsung Galaxy S4, Unable to Unlock?

Hey everyone, I've been searching for a while now and I just have no idea what's going on with this phone. My mom bought this phone off of Amazon and it was claimed to be unlocked. Upon inserting the sim card, there was no prompt for an unlock code however the phone could not find service. I tried entering in many APN's found on her carriers website and from other sources, nothing had worked. I then decided to do the same with my sim card (from a different carrier) and still, nothing.
I then tried to access the service menu, in attempt to unlock the device that way. NONE of the codes/methods worked (for anything). I couldn't even find the "carriers" folder in /efs, no apk's, nothing. I tried to install various apps that would open/prompt the menu, however none of them could. I truly don't know what to do, I cannot take it to a place to get an unlock code because there is no prompt to even unlock the device in the first place. Any help is appreciated, I'm usually fine with rooting/unlocking my devices (I did my Nexus 5 and S4 SGH-I337M without a problem) however this one truly has me stumped. Thanks
Guides referenced:
[HOWTO] Enable Hidden Menus for Verizon Galaxy S4 - http://forum.xda-developers.com/showthread.php?t=2303905
Unlock Galaxy s4 sch-i545 - http://forum.xda-developers.com/showthread.php?t=2568274
Device Info:
Samsung Galaxy S4 (SCH-I545PP)
Android 5.0.1
Rooted (why I included the "ish" part)
Stock ROM
http://www.digitaltrends.com/mobile/cdma-vs-gsm-differences-explained/
I tried putting it on GSM, CDMA, Global and nothing has worked! I have no idea what to do... Should I try to flash a TouchWiz-based ROM on it and see if it prompts me for an unlock code? Or maybe flashing back to the original firmware? I have no idea...

GT-I9100 updating to 4.1.2

Hello,
I have a Samsung S2 (GT-I9100), the current android version on it was 4.0.2. Recently i tried to upgrade it to android 4.1.2 (I guess it is the latest supported version for this phone isnt it?).
I tried using Samsung Kies and Odin, but always end up with the phone getting locked (I get that SIM Network Unlock PIN message).
I even tried with the "Samsung S unlock" app, but it failed to unlock it.
However, when i downgraded to 4.0.3, the "Samsung S unlock" app unlocked successfully.
I have tried several things, i called my operator to ask for the PIN (but he had no idea what an "unlock PIN" is and asked me to change my phone instead ... -.-), i even tried to extract the "hash" from my data file, and i tried to crack the hash with hashcat, but it failed. I even tried to dial *#197328640#, and proceed as some tutorials has indicated, but i couldnt go beyond the "PHONE CONTROL" menu.
So i have some questions, im planing on installing cyanogenmod (android 5.1.1), would that removed the lock? (i cant try it now, i dont have the phone on me), like is the lock only for samsungs ROMs? or it is like HARD-CODED in the phone?
Another thing is, i was taking a look at where the lock functionality is located (in the source code), and i think i was able to find it in the "hidden.img" file, in an application called SecPhone.apk (odex), so my question here is, if i somehow was able to bypass this function (like always return true or something) then repack the hidden.img and install the new version, would that work? Or i shouldnt waste my time on that?
(And can anyone provide me with the source code of the Android 4.1.2? its a bit hard and annoying to navigate though the code on the browser, i tried to download it using the google repo tool, was running that under VM (as it only works on linux), and it i didnt have enough space, so it failed, and im a bit to lazzy to re-install the VM ...)
One last thing, while examining the code, i noticed that the unlock function takes 2 parameters, the PUK and the PIN, and only if the PUK is null then that function will use the PIN, so would introducing the PUK as the unlock PIN would work?
Thank you for your time ...

Moto Z bricked OEM Locked

Hello friends of XDA, I have a big problem between hands, I have a MOTO Z and I had it in android 7.0 since last year the update to andorid 7.1.1 did not arrive and I felt that with android 7 the battery was consumed very quickly, so I tried to find the update to flash it and just about 3 days ago I found it, I proceeded to download it and flash it in fastboot and adb.
The thing is that a few months ago, browsing through my phone (I had already rotated it, and unlocked the bottloader, I decided to re-block the bootloader, and remove the root, which never worked at 100) I got into the developer options, and I saw an option that until then I didn't know about its "OEM Unlock"function, as it was turned on and deactivated because I thought it didn't work.
Returning to the update flashing I proceeded as usual, with the commands, I proceed to restart the device and show the image of the boot of motrola but then it shows me a message in red letters.
"Startup Failed"
"failed to pass validation, backup to fastboot.
I thought it was a compatibility problem with the downloaded version of 7.1.1 so again I decided to flash the stock rom 7.0 but when I finished and restart the same message appeared.
I started to investigate and it seems that the OEM blockade is responsible for not being able to install any Stock Rom, or anything, and now I have a nice brick with Moto mods and I can't use it.
I wanted to unlock OEM in fastboot but nothing. sends message from "ALLOW OEM UNLOCK IN SETTINGS"
There is way to unlock the OEM from pc or fastboot without needing to be unlocked from the android settings, as in my case it is impossible for me,
I'd be very grateful for your help friends, I know it's a bit tedious to read but it's the only phone I have and I feel weird without it on the street.:bueno::bueno::llorando:
I'm with same problem here!
Suckmymfdick17 said:
Hello friends of XDA, I have a big problem between hands, I have a MOTO Z and I had it in android 7.0 since last year the update to andorid 7.1.1 did not arrive and I felt that with android 7 the battery was consumed very quickly, so I tried to find the update to flash it and just about 3 days ago I found it, I proceeded to download it and flash it in fastboot and adb.
The thing is that a few months ago, browsing through my phone (I had already rotated it, and unlocked the bottloader, I decided to re-block the bootloader, and remove the root, which never worked at 100) I got into the developer options, and I saw an option that until then I didn't know about its "OEM Unlock"function, as it was turned on and deactivated because I thought it didn't work.
Returning to the update flashing I proceeded as usual, with the commands, I proceed to restart the device and show the image of the boot of motrola but then it shows me a message in red letters.
"Startup Failed"
"failed to pass validation, backup to fastboot.
I thought it was a compatibility problem with the downloaded version of 7.1.1 so again I decided to flash the stock rom 7.0 but when I finished and restart the same message appeared.
I started to investigate and it seems that the OEM blockade is responsible for not being able to install any Stock Rom, or anything, and now I have a nice brick with Moto mods and I can't use it.
I wanted to unlock OEM in fastboot but nothing. sends message from "ALLOW OEM UNLOCK IN SETTINGS"
There is way to unlock the OEM from pc or fastboot without needing to be unlocked from the android settings, as in my case it is impossible for me,
I'd be very grateful for your help friends, I know it's a bit tedious to read but it's the only phone I have and I feel weird without it on the street.:bueno::bueno::llorando:
Click to expand...
Click to collapse
Try to boot in Fastboot flash twrp and flash ressurection remix rom. It's great rom. Forget about locking. I had the same problem like you as I was trying to flash stock ROM and lock bootloader.
I gave up on this.
knjigo said:
Try to boot in Fastboot flash twrp and flash ressurection remix rom. It's great rom. Forget about locking. I had the same problem like you as I was trying to flash stock ROM and lock bootloader.
I gave up on this.
Click to expand...
Click to collapse
Well, when the root didn't work properly, I flashed the phone again and blocked the bootloader. Will I still be able to install TWPR or should I lose my phone?
Suckmymfdick17 said:
Well, when the root didn't work properly, I flashed the phone again and blocked the bootloader. Will I still be able to install TWPR or should I lose my phone?
Click to expand...
Click to collapse
What do you mean with "I blocked my bootloader"?
Twrp is easy to flash. Root is integrated in ressurection remix rom. And this rom is great. Just try to flash twrp in Fastboot and than ressurection remix with twrp.
Can you boot in Fastboot?
Do you remember what build of 7.1.1 you had on your device before downgrading to 7.0?
If so, I would suggest finding that firmware (the full stock firmware, not OTA updates) or newer if you can, and try to flash that. Since your bootloader is still likely from the 7.1.1 build, a locked bootloader will only permit files matching the same patch level (i.e. from the exact same stock ROM as that bootloader patch) to boot.
If not, then unfortunately there's not a lot we can do. You could wait for a newer firmware to get leaked, but as your device is unable to boot (due to failing the bootloader checks) and you cannot toggle OEM unlocking because you cannot boot, it's a nasty vicious circle that is difficult to get out of. You may have to consider sending your device for service and pay for an expensive motherboard replacement otherwise, since Motorola have a record of your device being unlocked. Your service centre experience may vary.
Only lock a bootloader after ensuring you've flashed all the stock firmware and it is all the same patch level as your bootloader. Hopefully you'll find newer firmware that you can repair with.
tjgibri said:
I'm with same problem here!
Click to expand...
Click to collapse
I solved it, I finally flashed the stock rom to my phone and it works.
Apparently my pc was not flashing the stock rom in adb, and the phone turned off when loading the software. I did it 3 times until I load correctly and start well.
if you have the same problem apparently then OEM Blocking is not responsible. You have to flash the most current rom or the one that you had by default when the brick happened to you, you flash it in a normal way with commands of adb and ready, I would have to come back to life.
download from firmware center MotoZ Griffin the most current rom stock at 7.1.1
echo92 said:
Do you remember what build of 7.1.1 you had on your device before downgrading to 7.0?
If so, I would suggest finding that firmware (the full stock firmware, not OTA updates) or newer if you can, and try to flash that. Since your bootloader is still likely from the 7.1.1 build, a locked bootloader will only permit files matching the same patch level (i.e. from the exact same stock ROM as that bootloader patch) to boot.
If not, then unfortunately there's not a lot we can do. You could wait for a newer firmware to get leaked, but as your device is unable to boot (due to failing the bootloader checks) and you cannot toggle OEM unlocking because you cannot boot, it's a nasty vicious circle that is difficult to get out of. You may have to consider sending your device for service and pay for an expensive motherboard replacement otherwise, since Motorola have a record of your device being unlocked. Your service centre experience may vary.
Only lock a bootloader after ensuring you've flashed all the stock firmware and it is all the same patch level as your bootloader. Hopefully you'll find newer firmware that you can repair with.
Click to expand...
Click to collapse
Thanks for your help friend, I finally flashed it with a recent android 7.1.1 update. Apparently the OEM lockout was not the culprit, but it was an interrupted flash of android 7.1.1 at some point when loading the software to the phone, it would shut down on its own and not complete the installation, which showed me the mentioned message. I didn't realize that and thought it was the OEM blockade.
I finally did it on another pc and it worked. the phone came back to life.
I have one Moto Z2 Force (XT1789-05), bought from coolicool.com, I didn't know device came Unlocked Bootloader, Device rom had problem with many apps, I googled and found one topic in XDA developer to Install Stock Rom, I downloaded and Installed India Rom, it's worked somehow fine, but still had problem, I downloaded Verizon Rom, Android 8, after Installed Android 8 Verizon Rom, Locked device bootloader immediately, now device stuck at Welcome Wizard in Android 8, after select language I got this message: (Please wait, this may take a few minutes) this is proof video (http://ahmn.co/Upload/IMG_0161.MOV), after this issue, device already locked, I can't unlock, because need to go to the Developer Option in Setting, I stucked in Welcome Wizard, there isn't any bypass, So, I start to search in Google, XDA-Forum, Android Central and more, I created many threads, many requests, no one can't help me, I tried to reach google developer support to the tell to me how can I bypass Android 8 Welcome Wizard, there is must be a way, but I can't find it, now I can access to Android Recovery and Bootloader
1. if you help me to FORCE UNLOCK device without need Developer Option in setting my problem will solve
2. If you help me to Bypass Android Welcome Wizard, access setting and enable OEM Unlock
3. If you help me to update the device from Android 8 to Android 9 Verizon ROM via ADB Sideload or Update from SD card in Recovery mode
4. If you have any idea to how can I fix it
Extra Information: I bought Belkin and Uni USB-C to Ethernet Adaptor to help me bypass Android 8 Welcome Wizard, I bought WSKY WIFI Adaptor because device Wifi can't find any network (I found QR setup by tap several times in Language Selection), after this section need to download google device policy apk, my device can't find any Wifi Network and my Ethernet Adaptor can't help me either, So, I just remained with my phone, and I can't do anything,
Please, someone, help me
My Device SKU: XT1789-05

ASUS-ME302KL- i can't unlock the bootloader

hello. first of all i don't speak english and i use google translate and i'm sorry for that.
I have an asus-me302kl tablet. I wanted to install twrp but now it's locked. I installed firmware with rawdate but it has no function. I need help unlocking the bootloader. recovery mode does not turn on either. I am wondering if there is a pat file or some other method to unlock the bootloader. Thanks in advance. I hope I was able to explain myself.
please help
civan34 said:
please help
Click to expand...
Click to collapse
This low-end tablet is heavily outdated ( 7 years old ), means you won't find a TWRP suitable to it.
jwoegerbauer said:
This low-end tablet is heavily outdated ( 7 years old ), means you won't find a TWRP suitable to it.
Click to expand...
Click to collapse
First of all, thanks for the answer. this tablet is a customer tablet. and it's my fault that it's locked. For this I need to unlock the bootloader. is there no tool to flash the software? I managed to install the .rawdata firmware. and the device has root permission but I couldn't go further. Now I'm waiting like this.
@civan34
My suggestion:
Re-flash tablet's Stock ROM ( is a ZIP-file ) to bring tablet back to its initial state ( what includes flashing the Stock Recovery ).
When that's done you can start to unlock tablet's bootloader by means of Fastboot, if it's not denied by OEM/Carrier.
If tablet's bootloader got successfully unlocked you can try to flash LineageOS v15 ( Android 8 Oreo ) onto tablet.
jwoegerbauer said:
@civan34
My suggestion:
Re-flash tablet's Stock ROM ( is a ZIP-file ) to bring tablet back to its initial state ( what includes flashing the Stock Recovery ).
When that's done you can start to unlock tablet's bootloader by means of Fastboot, if it's not denied by OEM/Carrier.
If tablet's bootloader got successfully unlocked you can try to flash LineageOS v15 ( Android 8 Oreo ) onto tablet.
Click to expand...
Click to collapse
I can't install the stock firmware. Doesn't allow flashing over fastboot. Doesn't allow flashing via recovery mode. Is there a program to install stock firmware?
@civan34
A Stock ROM gets flashed by means of ADB
Example command sequence:
Code:
adb devices
adb reboot sideload
adb sideload <FULL_PATH_TO_STOCK_ROM_ZIP_ON_PC>
adb reboot
jwoegerbauer said:
@civan34
A Stock ROM gets flashed by means of ADB
Example command sequence:
Code:
adb devices
adb reboot sideload
adb sideload <FULL_PATH_TO_STOCK_ROM_ZIP_ON_PC>
adb reboot
Click to expand...
Click to collapse
I am a little novice at the command line and do not know how to type the command you typed. Should I type as you wrote, or do I need to change the name of the zip on the computer?
my command
(adb sideload stock.zip) and I get read error for this command.Since I don't speak English, I didn't understand exactly how to write the command. I don't want to overwhelm you, sorry for that
I'm in the same boat.
I picked up 4 of these from an auction. I can't unlock any of them, because the Asus tool, (ME302KL_UnlockTool_Instructions) zip file, no longer works. TWRP is available 3.2, link is below. I have rolled back to the stock ROM on 2 of the machines, no joy. Any suggestions or guidance, would be greatly appreciated. Thanks.
https://forum.xda-developers.com/android/general/recovery-twrp-3-1-1-0-asus-me302kl-t3609759
Link to Asus Unlock file
https://drive.google.com/file/d/1mzntnfm5OlHbKd1cYkd1YEFs6CYeKqmn/view?usp=sharing
jbone899 said:
I picked up 4 of these from an auction. I can't unlock any of them, because the Asus tool, (ME302KL_UnlockTool_Instructions) zip file, no longer works. TWRP is available 3.2, link is below. I have rolled back to the stock ROM on 2 of the machines, no joy. Any suggestions or guidance, would be greatly appreciated. Thanks.
https://forum.xda-developers.com/android/general/recovery-twrp-3-1-1-0-asus-me302kl-t3609759
Link to Asus Unlock file
https://drive.google.com/file/d/1mzntnfm5OlHbKd1cYkd1YEFs6CYeKqmn/view?usp=sharing
Click to expand...
Click to collapse
I contacted Asus a few times about this Bootloader issue, but today I took a different approach. It appears they Blacklisted the ME302KL from the servers, because it is EOL. I made it clear to them. that I can't access the Asus Cloud or any other Asus tool loaded on the machine and I can't do OTA updates either. I made it clear that I should be able to at a minimum be able to upgrade to 4.4.4 from 4.2.2 after resetting the device. They agreed and are escalating the issue up the food chain.
My hope is they remove it from the blacklist which will fix the "Network Error" message when trying to use the Unlock Tool for the bootloader. I will circle back around, once I hear back from them....
jbone899 said:
I contacted Asus a few times about this Bootloader issue, but today I took a different approach. It appears they Blacklisted the ME302KL from the servers, because it is EOL. I made it clear to them. that I can't access the Asus Cloud or any other Asus tool loaded on the machine and I can't do OTA updates either. I made it clear that I should be able to at a minimum be able to upgrade to 4.4.4 from 4.2.2 after resetting the device. They agreed and are escalating the issue up the food chain.
My hope is they remove it from the blacklist which will fix the "Network Error" message when trying to use the Unlock Tool for the bootloader. I will circle back around, once I hear back from them....
Click to expand...
Click to collapse
No joy. Asus says they are under contract with AT&T. The ME302KL has been black listed and Asus will not add it back to the unlock tool or provide any support AT ALL!. They keep telling me the unlock tool isn't theirs. But the amount of times Asus's name is used in the EULA, tells me otherwise. I'm waiting to hear back from AT&T on their position on the matter. Stay tuned...
Ok campers, i have a work around for the ME302KL AT&T bootloader issue. I just verified AT&T can unlock the devices, they just verified 3 devices for me. Only catch, you have to have an account with them.
So, If you like people actually being able to hear you on a call, you probably have a different service, like i do. Based on the call, there are really only 2 options. Option 1, Harassment. Someone you know, has them as their provider. A family member, a friend maybe your priest. So, my suggestion is to harass them into they adding the device, under their plan. They only need to do it long enough, for you to get it upgraded. Once AT&T unlocks it, upgrade the OS, add TWRP and create a custom recovery that never goes back to KitKat. then, have them cancel it off their account. At the most, you're looking at $25 for the month, if anything at all.
Option 2 - Go Prepaid for a couple of months. This one is tricky based on the T&C's on their website. You will need to create a new account, $30 for 5 5gb a month. No contract and what you don't use, rolls over to the next month. Make sure to read their T&C's ased on new prepaid accounts with BYOD. I told the agent I wanted to Only use broadband service, no phone for when im working in the field, until i'm still under contract with Verizon. She pitched services, i dodged and evaded. She told me a month to month prepaid plan was doable, to get it unlocked. They would be able to unlock it for free and so i could upgrade the OS. So, it's not too terrible, just annoying to jump through so many hoops. The first option, would be the easiest.
These are just suggestions. I take no responsibility if you brick the device once it's unlocked. It is AT&T and the device may be commiting suicide in lieu of being on their Network. :0)
I sent the message to AT&T with imei of my ME302KL but the answer is been "the manufacturer doesn't have an unlock code for this device".
Help me to unlock my device.

an newbie need your advice and help!

hi all,
I have Samsung SM-G935W8 (in Canada), bought used from someone. recently, try to play with android, and realized the phone PDA was G935UUEU4BRD1, and model was SM-G935U which is different from the model that showing on back cover. think the guy flashed a different rom for this phone.
couple days ago, I did hard factory reset for no reason, and get google account locked. then search online and learning how to fix it. seems like need to flash combination rom --> use tool bypass frp --> flash official rom to solve this issues.
i downloaded many combination firmware and all failed on odin flash. until i use one that allowed me to flash and success to open the phone as Factory Binary. But, I noticed the phone model changed to SM-G935A, which is AT&T firmware. the android version is 6.0.1, when I try to run program to do FRP bypass, no luck, think that because I can't turn on OEM- Unlock option(can't find it on developer option tough)? or bootloader locked?
now, I can only flash official rom that from AT&T, and android 8 that I can find it. if the phone can be fixed FRP issues, model change to G935A is fine, I dont care that model, I dont use the phone for call, only for wifi and camera. and maybe later can play flash to other model of ROM. not sure if possible.
current, the working combination rom I flashed is PDA : G935UUCUBATA1
ADB FRP to bypass FRP (not working)
and flashed to AT&T rom PDA: G935AUCUBCTB1_G935AATTBCTB1_8.0.0
FRP still not bypassed, and stuck on google account validation screen. any advice how and what tools can bypass FRP for this phone now model is SM-G935A? thanks in advance!

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