[Q] JB 4.3 SIM unlocking - Galaxy S III Q&A, Help & Troubleshooting

Hello, is there are any way to unlock 4.3 firmware? I tried acces service menu, but in 4.3, as I found, it is disabled. I tried edit nv_data.bin file, but this file dosn't have required line in tutorial to edit. Please, don't suggest to call carrier or use online services, because I don't even know to which carrier phone is locked.
I have two ideas, but didn't tried them yet:
1) Installing custom rom like Cyanogen.
2) Downgrade phone from 4.3 to 4.1.1
Is there are any possibilities that these idieas will work, or it will be just waste of time?

1) no
2) will break efs folder
You are wasting your time without an unlock code, carrier is unimportant when buying a code.

Edwhis said:
Hello, is there are any way to unlock 4.3 firmware? I tried acces service menu, but in 4.3, as I found, it is disabled. I tried edit nv_data.bin file, but this file dosn't have required line in tutorial to edit. Please, don't suggest to call carrier or use online services, because I don't even know to which carrier phone is locked.
I have two ideas, but didn't tried them yet:
1) Installing custom rom like Cyanogen.
2) Downgrade phone from 4.3 to 4.1.1
Is there are any possibilities that these idieas will work, or it will be just waste of time?
Click to expand...
Click to collapse
I unlocked my i9305 by downgrading to 4.1.1 jb there's easy to follow instructions online I don't know if it's the same for i9300 though

boomboomer said:
1) no
2) will break efs folder
You are wasting your time without an unlock code, carrier is unimportant when buying a code.
Click to expand...
Click to collapse
Why it will break my efs folder? And what if i will do it backup before downgrading?
And how to find code without carrier? because all online services, which i tried, asking for carrier.

Tmzdroid said:
I unlocked my i9305 by downgrading to 4.1.1 jb there's easy to follow instructions online I don't know if it's the same for i9300 though
Click to expand...
Click to collapse
Which instructions you have fallowed?

Related

[Q] Does Unlocking a SGS II works successfully

Has anyone actually tried this guide to unlock a SGS II to work with any GSM mobile operator's SIM worldwide.
http://forum.xda-developers.com/showthread.php?t=1064978
I am a novice to Andriod world, however I am planning to buy a SGS II. If the method above does really work , then I might have the possibilty of buying an operator locked handset to be unlocked laters for usage with my operator.
It is a request to make more detailed sticky for a final and tested step-wise guide for this unlocking procedure for the benefit of the community.
Thanks.
Regards.
Hi,
At the end if the OP in the thread you mention you will find a link to an apk that will do all the work for you.
http://forum.xda-developers.com/showthread.php?t=1092451
Best Regards.
Astrakhan said:
Hi,
At the end if the OP in the thread you mention you will find a link to an apk that will do all the work for you.
http://forum.xda-developers.com/showthread.php?t=1092451
Best Regards.
Click to expand...
Click to collapse
What is apk and how can it work. Is it to be run on the PC or the phone. What is the way of installing it.
Thanks.
Ups, sorry for not being clear enough...
An apk is an android installable file.
In the following thread you will find a link to the apk itself (for manual install) and a link to the android market for automated install.
http://forum.xda-developers.com/showthread.php?t=1092451
The only downside is that this app needs root to extract the unlock code. To root your device you need to follow the instructions on this other thread:
http://forum.xda-developers.com/showthread.php?t=1056334
Best Regards
Astrakhan said:
Ups, sorry for not being clear enough...
An apk is an android installable file.
In the following thread you will find a link to the apk itself (for manual install) and a link to the android market for automated install.
http://forum.xda-developers.com/showthread.php?t=1092451
The only downside is that this app needs root to extract the unlock code. To root your device you need to follow the instructions on this other thread:
http://forum.xda-developers.com/showthread.php?t=1056334
Best Regards
Click to expand...
Click to collapse
Thanks,
So theoretically if i gain root access to the phone and run the attached APK file , it will possibly find out the unlock code for the mobile.
This unlock code would be SIM dependent (depending on which service provider's SIM i have inserted) or the handset specific, meaning that once the handset is unlocked it would accept virtually any service provider's SIM worldwide.
Thanks for the information.
The code is device specific, and will block any sim not being from your provider.
If you gain root access ,which is pretty straightforward with the guides available here in the forum and run that app you will get your unlock code.
Depending on the carrier you may even get an unlocked device. O2 seems to be giving both locked and unlocked phones.
Cheers!
Astrakhan said:
The code is device specific, and will block any sim not being from your provider.
Click to expand...
Click to collapse
From the above statement, I am a bit confused. Does it mean it will not block any SIM from any service provider.
I intend to buy a locked set from UK (which is usually when you buy a handset with contract) and unlock it to use elsewhere in world. The reason is obvious cost benefit which you get when buying a set with contract.
Is it possible via using this method.
Thanks.
What I wanted to say is that the unlock code does only depend on the device, not on the sim card you insert into the phone.
The sim lock, which that code removes, blocks any sims from providers other than your own.
You will be able to remove the sim lock with that app. The app will give you the unlock code you need.
On top of that, some of the O2 handsets that you buy subsidized are not sim locked (some are, some aren't) so, if you buy the phone from them on contract you may be lucky and get a sim free phone.
Best Regards.
Like wise some PAYG O2 are unlocked .
jje
Odia's method worked fine for me and I learnt a lot about the phone by rooting - I'm unlocked and happy
sahajesh said:
Odia's method worked fine for me and I learnt a lot about the phone by rooting - I'm unlocked and happy
Click to expand...
Click to collapse
Alright, guess i would give it a try too.
Just would appreciate if you can guide with the following :
1. Does the phone needs to be in the home network (with the original operator SIM) in order to perform the rooting and install the APK file to get the unlock code.
2. Can we insert any other operator's SIM (which would be locked ofcourse) in the handset which may or may not be in the same country/network and still be able to access the phone main menu or screen to perform the rooting and hence unlocking activity.
3. How to install and run the APK file after rooting the device ( i see there already are other guides about how to perform rooting).
Thanks.
Does this app actually work for unlocking?
http://www.knowyourmobile.com/blog/903802/free_samsung_galaxy_s2_unlock_app_released.html
I'm a little hesitant to try it since I don't want to brick the phone.
jeffiphone said:
Does this app actually work for unlocking?
http://www.knowyourmobile.com/blog/903802/free_samsung_galaxy_s2_unlock_app_released.html
I'm a little hesitant to try it since I don't want to brick the phone.
Click to expand...
Click to collapse
It's difficult to brick a phone with the unlock process because it's not something that can "just be done" to a phone. You generally run an app that gives you an unlock code. You then insert a SIM that shouldn't work, due to SIM locking, and it asks for the code.
This app works...
https://market.android.com/details?id=com.helroz.galaxysunlock
Archer said:
It's difficult to brick a phone with the unlock process because it's not something that can "just be done" to a phone. You generally run an app that gives you an unlock code. You then insert a SIM that shouldn't work, due to SIM locking, and it asks for the code.
This app works...
https://market.android.com/details?id=com.helroz.galaxysunlock
Click to expand...
Click to collapse
I thought that if you entered an incorrect unlock code several times that it would screw the phone up, and in the article it mentions that if you run the app more than once it may "freeze" your phone.
Make sure you back your efs up before you try to unlock. Just in case.
Sent from my GT-I9100 using XDA App
HyperEscape said:
Alright, guess i would give it a try too.
Just would appreciate if you can guide with the following :
1. Does the phone needs to be in the home network (with the original operator SIM) in order to perform the rooting and install the APK file to get the unlock code.
2. Can we insert any other operator's SIM (which would be locked ofcourse) in the handset which may or may not be in the same country/network and still be able to access the phone main menu or screen to perform the rooting and hence unlocking activity.
3. How to install and run the APK file after rooting the device ( i see there already are other guides about how to perform rooting).
Thanks.
Click to expand...
Click to collapse
1. No
2. Can be done without any SIM
3. Install Chainfire's APK from Market
jeffiphone said:
I'm a little hesitant to try it since I don't want to brick the phone.
Click to expand...
Click to collapse
Its impossible for Chainfire's APK to brick the phone, it does not make any writes only reads, this is of course the same for my manual method.
If you are rooted running the MIUI ROM and unlock the phone with this app will the phone still be unlocked if you flash a stock ROM back onto the phone?
Thanks
jeffiphone said:
If you are rooted running the MIUI ROM and unlock the phone with this app will the phone still be unlocked if you flash a stock ROM back onto the phone?
Thanks
Click to expand...
Click to collapse
The unlock is permanent, the only way your phone would be re-locked would be by restoring your EFS which was locked.
Steps i have done :
- Root phone.
- Backup EFS with "EFS Pro" (just in case)
- SGS2 SIM unlock code finder
And done ... all operators unlocked.

[Q] Does changing modem version makes you lose the SIM Unlock

Here's my problem, I bought a Samsung Galaxy S2 I9100 from a friend like 4 months ago, which means I don't really know if it's a factory unlocked device or international unlocked device or unlocked using some kind of methods that I don't really know anything about them...
Anyway, I rooted it probably a month after buying it, and I installed two or three custom roms her and there. (I think I installed the X-TremE CM10 1.5 Pure, 1.6 Pure and others roms from other developpers...)
Finally I found the perfect custom rom that I used all the time until now, it was the SuperNexus rom from Faryaab.
Everything went fine until today, I decided to try a new rom, the Omega v16.2 from ::indie:: (I can't post the link sorry but it's very easy to find).
Factory/Data Wipe, Wiped the cache and the Dalvik Cache and installed from zip, everything went fine.
The problem here is that all this time I was using my default modem which I found with the phone, the XXLPX (not a quite loved and famous modem from what I've seen), but the rom I installed was "equiped" with the XXLSJ modem (I don't know if we can say so, i'm not really a professional), so my Baseband version actually changer to I9100XXLS6 (it was I9100XXLPX as said above) and know I have in my hands a SIM Locked device...
I tried the Galaxy S2 SIM Unlock application from Chainfire and the Galaxy_S Unlock from HELROZ and none of the two have worked.
I switched back to the SuperNexus rom, redownloaded the XXLPX modem and reflashed it through the CWM Recovery menu and my phone is still SIM Locked.
So my question here is, does the fact that the rom have changed my modem version locked my phone, or did I do something wrong when installing ?
And is there anyway I could reunlock my phone using any method (probably not, but I ask anyway, who knows) ?
Thanks in advance.
You tried those apps with busybox right? sometimes you need to install another busybox installer version to getting it unlocked.
Have you tried Galaxy S2 SIM Unlock?
if you have a tendency to switch ROMs too often, you might want an app that keep that locking nightmare away.
if all apps fail, look into what these guys did (do not replace the bin file posted there, it's a diffrent method):
http://forum.xda-developers.com/showthread.php?p=35934314#post35934314
Thanks alot for this ! it's gonna be really useful next time i'm gonna have a problem like that ! But I've already reunlocked it so I can't really try :c. I took it to some "specialist" guy that did it. I still don't know what's the method he used though...
As I've said I'm not a professional my self so it would be kind from you if you explain me two or three things.
First, what do you mean with busybox ? I'm not quite sure if the rom I was using (the Omega) while testing the two unlocking applications listed above was "equiped" with that.
Second thing, you didn't really answered my question which I'm gonna reformulate now:
Can I actually change the version of the Baseband of my phone ? If yes, do I lose the SIM Unlock ? And if I can change the Baseband version and lose the actual SIM Unlock, can I reunlock it and keep that version of the Baseband or do I need to get back to the old version by reflashing it, then reunlock it ?
And finally, the efs folder that I need to backup every time before flashing a new rom (I didn't knew that), what does he contain ? From what I've seen he contains the nv_data.bin file which I think contains the unlock, and that folder also contains some IMEI informations and other stuff. If I actually back it up before installing a new rom, and if that rom changes the baseband version which will probably lock my phone, is it safe to put back that backed up efs folder while keeping the same rom and the same baseband version that came with it ? Does it reunlock the phone ? And do I just put it back using a root explorer and just overwrite it the existing ones ?
Yeah I know, too many questions a man can handle, but I really need to be informed of all those things so I can be aware of what I'm doing.
And thanks in advance for your patience.
Best regards.
fury1337 said:
Thanks alot for this ! it's gonna be really useful next time i'm gonna have a problem like that ! But I've already reunlocked it so I can't really try :c. I took it to some "specialist" guy that did it. I still don't know what's the method he used though...
As I've said I'm not a professional my self so it would be kind from you if you explain me two or three things.
First, what do you mean with busybox ? I'm not quite sure if the rom I was using (the Omega) while testing the two unlocking applications listed above was "equiped" with that.
Second thing, you didn't really answered my question which I'm gonna reformulate now:
Can I actually change the version of the Baseband of my phone ? If yes, do I lose the SIM Unlock ? And if I can change the Baseband version and lose the actual SIM Unlock, can I reunlock it and keep that version of the Baseband or do I need to get back to the old version by reflashing it, then reunlock it ?
And finally, the efs folder that I need to backup every time before flashing a new rom (I didn't knew that), what does he contain ? From what I've seen he contains the nv_data.bin file which I think contains the unlock, and that folder also contains some IMEI informations and other stuff. If I actually back it up before installing a new rom, and if that rom changes the baseband version which will probably lock my phone, is it safe to put back that backed up efs folder while keeping the same rom and the same baseband version that came with it ? Does it reunlock the phone ? And do I just put it back using a root explorer and just overwrite it the existing ones ?
Yeah I know, too many questions a man can handle, but I really need to be informed of all those things so I can be aware of what I'm doing.
And thanks in advance for your patience.
Best regards.
Click to expand...
Click to collapse
okay, here we go,
1) There are a lot o people that become some sort of experts on devices thanks to this forums. It takes houndreds - if not thousends - of hours reading posts and executing some things you learn here.
2) busybox is an app. It's Linux based and to tell you the truth, not too many people know exactely what it does, It's very difficult to pinpoint every single thing that this "busy" app performs; Just think of it like a an app that does a lot of things for other app(s) to perform better or to perform at all. You can download it directly from Playstore; bare in mind that sometimes the unlocking app will work with different versions of busybox, so you'll have to try and see. I'm now using "Busybox Free 8.9.7" & "Busybox Installer 4.1"
3) You can always change your MODEM, Baseband it's some sort of radio version that cell phones use to get service, some basbands work on many countries, regions, some don't, still...you always can "odin it" and change the modem (Always read about flashing modem with odin before you do anything).
4) Some ROMs will re-Networkl-lock your device, hell, happened to me every time I went up from Gingerbread - Ice Cream Sandwich - Jelly Bean Leak. The only thing you have to do is get the right tools so you can always unlock it without the drama.
These unlocking apps let you LOCK & UNCLOCK as pleased.
5) the EFS folder indeed contents your network information, IMEI and stuff, it's always good to back it up as it is an important folder for your device to function. I use HC-kTool to back it up whenever i need to.
There is an unlocking method that makes you modify the .bin file. Never done it before but some guys here do it all the time and actually works.
Some other member could enlighten you in this matter; makes sense that flashing a new modem would lock your phone but i wouldn's know. Still, as I've got all these wonderfull apps to unlock....I really don't give a damn
Open for corrections, I've just used common sense.
gastonw said:
okay, here we go,
1) There are a lot o people that become some sort of experts on devices thanks to this forums. It takes houndreds - if not thousends - of hours reading posts and executing some things you learn here.
2) busybox is an app. It's Linux based and to tell you the truth, not too many people know exactely what it does, It's very difficult to pinpoint every single thing that this "busy" app performs; Just think of it like a an app that does a lot of things for other app(s) to perform better or to perform at all. You can download it directly from Playstore; bare in mind that sometimes the unlocking app will work with different versions of busybox, so you'll have to try and see. I'm now using "Busybox Free 8.9.7" & "Busybox Installer 4.1"
3) You can always change your MODEM, Baseband it's some sort of radio version that cell phones use to get service, some basbands work on many countries, regions, some don't, still...you always can "odin it" and change the modem (Always read about flashing modem with odin before you do anything).
4) Some ROMs will re-Networkl-lock your device, hell, happened to me every time I went up from Gingerbread - Ice Cream Sandwich - Jelly Bean Leak. The only thing you have to do is get the right tools so you can always unlock it without the drama.
These unlocking apps let you LOCK & UNCLOCK as pleased.
5) the EFS folder indeed contents your network information, IMEI and stuff, it's always good to back it up as it is an important folder for your device to function. I use HC-kTool to back it up whenever i need to.
There is an unlocking method that makes you modify the .bin file. Never done it before but some guys here do it all the time and actually works.
Some other member could enlighten you in this matter; makes sense that flashing a new modem would lock your phone but i wouldn's know. Still, as I've got all these wonderfull apps to unlock....I really don't give a damn
Open for corrections, I've just used common sense.
Click to expand...
Click to collapse
So what are the tools I need? I already tried 2 different sim unlocking apps on the play store and I got someone to try changing the upload ur nv_data.bin and it still doesn't unlock
RacecarBMW said:
So what are the tools I need? I already tried 2 different sim unlocking apps on the play store and I got someone to try changing the upload ur nv_data.bin and it still doesn't unlock
Click to expand...
Click to collapse
galaxysim unlock
galaxy s unlock
galaxy s2 sim unlock
Read First Threads:
http://forum.xda-developers.com/showthread.php?t=1360174
http://forum.xda-developers.com/showthread.php?t=1092451
http://forum.xda-developers.com/showthread.php?t=1289395
http://forum.xda-developers.com/showthread.php?t=2070375
http://forum.xda-developers.com/showthread.php?t=2069517
and don't forget busybox!
gastonw said:
okay, here we go,
1) There are a lot o people that become some sort of experts on devices thanks to this forums. It takes houndreds - if not thousends - of hours reading posts and executing some things you learn here.
2) busybox is an app. It's Linux based and to tell you the truth, not too many people know exactely what it does, It's very difficult to pinpoint every single thing that this "busy" app performs; Just think of it like a an app that does a lot of things for other app(s) to perform better or to perform at all. You can download it directly from Playstore; bare in mind that sometimes the unlocking app will work with different versions of busybox, so you'll have to try and see. I'm now using "Busybox Free 8.9.7" & "Busybox Installer 4.1"
3) You can always change your MODEM, Baseband it's some sort of radio version that cell phones use to get service, some basbands work on many countries, regions, some don't, still...you always can "odin it" and change the modem (Always read about flashing modem with odin before you do anything).
4) Some ROMs will re-Networkl-lock your device, hell, happened to me every time I went up from Gingerbread - Ice Cream Sandwich - Jelly Bean Leak. The only thing you have to do is get the right tools so you can always unlock it without the drama.
These unlocking apps let you LOCK & UNCLOCK as pleased.
5) the EFS folder indeed contents your network information, IMEI and stuff, it's always good to back it up as it is an important folder for your device to function. I use HC-kTool to back it up whenever i need to.
There is an unlocking method that makes you modify the .bin file. Never done it before but some guys here do it all the time and actually works.
Some other member could enlighten you in this matter; makes sense that flashing a new modem would lock your phone but i wouldn's know. Still, as I've got all these wonderfull apps to unlock....I really don't give a damn
Open for corrections, I've just used common sense.
Click to expand...
Click to collapse
Thanks alot for those "enligthments".
I don't know which method the guy I brough my phone to used to unlock it, but I reflashed the Omega custom rom yesterday and it actually didn't relock my phone ! But from now on I'm gonna be alot more cautious when flashing a new custom rom. Recovery backup from the CWM recovery mode, efs backup and maybe some Titanium backup too, even though I prefere having a clean "new phone" and install the apps by myself rather than referring to a backup. Yeah I know it's stupid but I like it that way.
Anyway, thanks again for your help and your patience, much appreciated c: .
Cheers.
salut.
btw, you might wanna add mobile odin yo that list. Hell of an app.
from sii xda-ded

[Q] Help unlocking please

So I accidently have locked myself out of my phone by changing my number to another network and thinking I could still use my current SIM in my phone until I got it unlocked.
I haven't been able to send or receive texts or anything for around 3 days now.
The place online I was getting it unlocked at said there was a delay with Samsung so they refunded me.
I tried the unlock apps but they don't work.
In GalaxSim, it says my phone is unlocked by when I try another SIM it doesn't work.
In the FAQ it says this could be a second SIM lock by the service provider, and to fix it I have to flash a full unbranded Samsung ROM.
I was wondering how I do this?
I'm on Cyanogen 10 and I currently have Jellybean on my device but I'm not too sure on what I have to do to flash to this ROM and if it will erase my data?
Thanks for any help!
AndyOHart said:
So I accidently have locked myself out of my phone by changing my number to another network and thinking I could still use my current SIM in my phone until I got it unlocked.
I haven't been able to send or receive texts or anything for around 3 days now.
The place online I was getting it unlocked at said there was a delay with Samsung so they refunded me.
I tried the unlock apps but they don't work.
In GalaxSim, it says my phone is unlocked by when I try another SIM it doesn't work.
In the FAQ it says this could be a second SIM lock by the service provider, and to fix it I have to flash a full unbranded Samsung ROM.
I was wondering how I do this?
I'm on Cyanogen 10 and I currently have Jellybean on my device but I'm not too sure on what I have to do to flash to this ROM and if it will erase my data?
Thanks for any help!
Click to expand...
Click to collapse
Plenty of topics on how to sim unlock and flash stock roms, go read them.
TheATHEiST said:
Plenty of topics on how to sim unlock and flash stock roms, go read them.
Click to expand...
Click to collapse
Any chance you could link me on a good up to date guide? I don't want to brick my phone or anything, I thought I would have been on a Stock ROM since I'm on Jellybean now.
AndyOHart said:
Any chance you could link me on a good up to date guide? I don't want to brick my phone or anything, I thought I would have been on a Stock ROM since I'm on Jellybean now.
Click to expand...
Click to collapse
CM10/jellybean is not a "stock" rom. CM10 is a "AOSP" based rom.
Stock rom refers to your devices/carriers default rom, ie Samsung based rom. Get your needed rom from sammobile.com
Flashing Guide: http://forum.xda-developers.com/showthread.php?t=1075278
If you want to unlock your device use the search there is plenty of topics if you use keywords like "sim unlock" etc.
Oh so I have to reset my phone pretty much? Can I go back to Cyanogen 10 after I get the stock ROM?
AndyOHart said:
Oh so I have to reset my phone pretty much? Can I go back to Cyanogen 10 after I get the stock ROM?
Click to expand...
Click to collapse
I didnt say you have to do anything however you may have compatibility issues unlocking sim so would probably best to go back to stock.
Yes, you can go back and forth to any rom you want.
Flash stock rom via odin (download mode)
Flash Siyah kernel (again in download mode)
Reboot into recovery and wipe data/factory reset.
Boot Android and use sim unlock etc.
Reboot into recovery and flash whatever rom you like.
Thanks for that, I went onto that site you mentioned, sammobile.com and I chose to do their unlock method with SRS, it was only 15 euro so I'll see if it fixes it!
Thanks
AndyOHart said:
Thanks for that, I went onto that site you mentioned, sammobile.com and I chose to do their unlock method with SRS, it was only 15 euro so I'll see if it fixes it!
Thanks
Click to expand...
Click to collapse
Are you crazy?
There is plenty of ways to do it yourself for FREE if you would just stop been lazy and use search button.
Obviously I'm wasting my time, waste your money.
1) Get Mobile Odin Pro for 3 euro and download this Unbranded Stock ROM:
http://www.sammobile.com/2012/11/15/i9100xxlsj-%E2%80%93-galaxy-s-ii-android-4-1-2-jelly-bean-test-firmware/
2) Read Mobile Odin thread by chainfire:
http://forum.xda-developers.com/showthread.php?t=1347899
3) Flash the downloaded ROM following the guide above.
4) Check if your network still locked, If it is check this thread out:
http://forum.xda-developers.com/showthread.php?t=2070375
5) Tell us how you did.
When I try run Mobile Odin it gives me an error about not being able to detect the device. It's not asking for super user privileges either?
your device is not rooted? weren't you in CM 10.1?
What device are you packing? GT-I9100?
I followed everything you said and my phone is still locked. No luck
gastonw said:
your device is not rooted? weren't you in CM 10.1?
What device are you packing? GT-I9100?
Click to expand...
Click to collapse
It was rooted but then I did a root checker and it said it wasn't, must of lost it after changing to CM 10 I think.
I downloaded some auto rooter and that rooted the phone for me. Then I followed your instructions and now I'm freshly formatted but still not working. Tried all the unlocker tools again and still doesn't work. GalaxUnlock says I'm already unlocked so it must be a second network lock.
But in his instructions he says that flashing to a stock Samsung ROM fixes it, but I thought that's what I just done.
sure you don't have an IMEI issue? You did back EFS folder before you flashed for the first time right?
check you IMEI by dialing *#06# and see if it matches the imei number sticked below the battery.
gastonw said:
sure you don't have an IMEI issue? You did back EFS folder before you flashed for the first time right?
check you IMEI by dialing *#06# and see if it matches the imei number sticked below the battery.
Click to expand...
Click to collapse
IMEI matches the one that I had before I started trying all this and matches the one behind the battery.
In the Galaxy Unlocker app I backed up the EFS files when it asked me tther than that I haven't touched them really. Any recommendations? I've tryed pretty much everything I have seen.
I'm searching for the network info key-in code, for you to see what's locked and what's not. Can't seem to find it tho.
Do you have another carrier sim card to put in & see if it asks for an unlocking code?
gastonw said:
I'm searching for the network info key-in code, for you to see what's locked and what's not. Can't seem to find it tho.
Do you have another carrier sim card to put in & see if it asks for an unlocking code?
Click to expand...
Click to collapse
I currently have my Meteor sim card in the phone, that's the company I was with for years.
The phone lets me browse and use apps and stuff when this sim card is in it.
I have another sim card for 48 who I am changing to, which asks for the unlock code.
Before with GalaxSim Unlock, it said I was already unlocked. I downloaded an old version now everything says undefined, and said it can't read the nv data, however I am nearly positive I have backups of this as I saw them on the card.
Galaxy S2 SIM Unlock just gives me an unlock code of 00000000 which doesn't work and Galaxy S Unlock doesn't work either, altough it says it does
AndyOHart said:
I currently have my Meteor sim card in the phone, that's the company I was with for years.
The phone lets me browse and use apps and stuff when this sim card is in it.
I have another sim card for 48 who I am changing to, which asks for the unlock code.
Before with GalaxSim Unlock, it said I was already unlocked. I downloaded an old version now everything says undefined, and said it can't read the nv data, however I am nearly positive I have backups of this as I saw them on the card.
Galaxy S2 SIM Unlock just gives me an unlock code of 00000000 which doesn't work and Galaxy S Unlock doesn't work either, altough it says it does
Click to expand...
Click to collapse
Well, now we know that you are indeed locked, thats good.
busybox installed on your device?
if yes, try installing another version (older/newer) once downloaded install it and keep it working in the background, then run the unlocking apps again
---------- Post added at 01:19 AM ---------- Previous post was at 01:17 AM ----------
or try this:
http://forum.xda-developers.com/showthread.php?t=1360174
you could also restore the EFS folder and see what's up.
gastonw said:
Well, now we know that you are indeed locked, thats good.
busybox installed on your device?
if yes, try installing another version (older/newer) once downloaded install it and keep it working in the background, then run the unlocking apps again
---------- Post added at 01:19 AM ---------- Previous post was at 01:17 AM ----------
or try this:
http://forum.xda-developers.com/showthread.php?t=1360174
you could also restore the EFS folder and see what's up.
Click to expand...
Click to collapse
I have Busybox installed, but I have two versions, BusyBox free and BusyBox installer, don't know if it matters that I have the two of them.
I have went to a much lower version of it but GalaxSim Unlock still says it can't read nv data.
I tried that program also and it says my Video card isn't supported :S
And hit the restore button in Galaxy S 2 Unlock and GS2_Repair so I presume it got restored. Where should the efs folder be located so I can double check?
AndyOHart said:
I have Busybox installed, but I have two versions, BusyBox free and BusyBox installer, don't know if it matters that I have the two of them.
I have went to a much lower version of it but GalaxSim Unlock still says it can't read nv data.
I tried that program also and it says my Video card isn't supported :S
And hit the restore button in Galaxy S 2 Unlock and GS2_Repair so I presume it got restored. Where should the efs folder be located so I can double check?
Click to expand...
Click to collapse
I also got 2 busybox (free 8.9.7 & installer 4.1).
GalaxSim Unlock should have a restore button, dunno the location of the back up, but the EFS folder should be in the data folder, u'll need a root explorer to get to it.

[Q] Sim Locked GT-I9300

I have used chainfires superuser and cwm programs to root my s3. I was looking for a jellybean upgrade and found this one:
youtube.com/watch?v=_PSt8b5D2dM
Like a dumbass i didnt look if there was one here, and I ran this one.
My phone is (was) a carrier unlocked GT-I9300. After running this ROM, the phone boots and everything works except the actual phone functions. WI-FI, internet... everything.
Any ideas how to un-sim lock or un-carrier lock my phone that this ROM caused?
Bump... No ideas at all???
it's not a sim lock, you probably messed up your imei. check if it matches the one under the battery
once the phone is unlocked, it is unlocked forever. no roms re-lock the phone! what do you mean your actual phone functions do not work? what are you f/w details? more info needed.
slrichey said:
Bump... No ideas at all???
Click to expand...
Click to collapse
Lack of details posted so no replies .
Firmware ???
Modem ???
CSC ???
Have you read the multiple identical posts for a fix .
jje
sriram231092 said:
once the phone is unlocked, it is unlocked forever. no roms re-lock the phone! what do you mean your actual phone functions do not work? what are you f/w details? more info needed.
Click to expand...
Click to collapse
Not quite true on the s3. Some unlock methods are reversed when upgrading to jb
Sent from my GT-I9300 using Tapatalk 2
silk acripsi
Model GT-I9300
Current Android Version: 4.1.2
Baseband: I9300UBELL1
Kernel Version: 3.0.31-789635
[email protected] #1
SMP PREEMMPT Fri Jan 4 19:59.29 KST
2013
Build Number: JZ054K.I9300UBEMA1
OK... details... had root access to phone using chainfires programs, which i bought. Was looking for Android Upgrade. I found one on YouTube that had good reviews, after all that's where I found chainfire's root process.
Installed ROM from download link to YouTube video above. Would not recognize a SIM card after that. My carrier does not lock their phones. Everything else on the phone works... wifi, internet, all the functions except phone and text. Took it to my carrier. They wiped it and put their version of Android on it but it would still not recognize the SIM. The tech told me the ROM I installed had SIM locked the phone.
I found the IMEI under the battery... but not on the actual phone software itself.
Thanks for the replies.
rootSU said:
Not quite true on the s3. Some unlock methods are reversed when upgrading to jb
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
thanks for the correction :fingers-crossed:
I just checked my IMEI and the numbers match. Has to be something else.
sriram231092 said:
thanks for the correction :fingers-crossed:
Click to expand...
Click to collapse
No probs. I only learned it myself the other day
JJEgan said:
Lack of details posted so no replies .
Firmware ???
Modem ???
CSC ???
Have you read the multiple identical posts for a fix .
jje
Click to expand...
Click to collapse
Sorry. Now there are details.
Have read lots of posts on here... nothing exactly the same on the s3. Lots with restoring the imei, but my numbers match.
All i can find is people saying to send it back to Samsung and maybe they will fix it.
Any direction is appreciated.
I verified with my carrier that their gt-i9300 comes SIM unlocked. When I put my SIM card in the phone, it asks for the SIM network unlock pin. I have tried everything my carrier gave me. hey said I would need to know which carrier the custom rom was from in order to be able to unlock it.
The video on youtube where I got the ROM was from "theAngelofMusic" who is also in some XDA videos, or at least linked to some of them. I have asked her through the comments there several times but she ignores me.
I have searched the SD card for the efs fiels to no avail. I have read numerous more posts here but can find none with the same specific phone and issue.
Ideas???
try a different sim card
Carriers don't supply custom roms .
Your source for the rom was a bad source in my view .
All i can suggest is try the Kies restore to original firmware .
http://forum.xda-developers.com/showthread.php?t=1978840
One presumes that you have read the identical posts and tried as Glenbun ssays another sim / network.
But the whole thread does not make real sense
Carrier unlocked then a rom locked it .>> suggests firmware was possibly for another phone or damaged .
Service put their version of Android on it very very odd Android as opposed to Samsung firmware .
Have you restored your backed up EFS folder ??
jje
JJEgan said:
Carriers don't supply custom roms .
Your source for the rom was a bad source in my view .
All i can suggest is try the Kies restore to original firmware .
http://forum.xda-developers.com/showthread.php?t=1978840
One presumes that you have read the identical posts and tried as Glenbun ssays another sim / network.
But the whole thread does not make real sense
Carrier unlocked then a rom locked it .>> suggests firmware was possibly for another phone or damaged .
Service put their version of Android on it very very odd Android as opposed to Samsung firmware .
Have you restored your backed up EFS folder ??
jje
Click to expand...
Click to collapse
Let me start over. Phone is a GT-I9300. Our carrier is West Central Wireless, which is a small local carrier. The phones do not come from WCW with any type of lock, meaning I can take them wherever and use any SIM card. Not trying to be difficult.
The phone was rooted using this process: http://forum.xda-developers.com/showthread.php?t=1957273 Then I ran a custom ROM from this link: http://www.hotfile.com/dl/173577508/3316be3/I9300XXDLIB_I9300OXFDLI1_XEO.zip.html which was linked to android authority from YouTube, which is also where i found the chainfire root info. This is the YouTube link: http://www.youtube.com/watch?v=_PSt8b5D2dM
Once i flashed this ROM, I could not get the phone to recognize my SIM card. I tried to restore it to the original and still nothing. I took it to a tech at WCW. They put the current version of Android on it but it will still not recognize a SIM. I have tried one of theirs, my wife's, and the one from the phone. They all ask for a SIM unlock PIN. I got the two that WCW said might work and neither work. They suggested the ROM i loaded from YouTube was carrier specific. After getting it back from WCW i cannot find the efs files.
Everything on the phone works, less the call and text. Internet is fine as long as I use WIFI. Same with email, google play, etc...
I tried a couple of different unlock codes from the internet. None worked and thankfully all refunded the fee as they said they would.
I am trying to figure out if it is possible to restore this phone to actually being a phone. Hope this helps.

[Q] Entered *#197328640# but no UMTS menu

Some time ago I was able to downgrade my S3 i9300 from Claro to 4.1.1. I did this in order to unlock the phone, and based on what I read here and on the web I needed 4.1.1 in order to get the menu that unlocks the cell. However after doing all the instructions and getting the cell rooted when I type the code *#197328640# I only get the same menu that was there when I had the 4.1.2 version on the cell, and of course it will not let me unlock the phone.
Is there any other way, like modifying some file or something like that, which could help unlock it? I am not afraid of having to use and editor to mess around with files. Any help will be appreciated.
abyss1957 said:
Some time ago I was able to downgrade my S3 i9300 from Claro to 4.1.1. I did this in order to unlock the phone, and based on what I read here and on the web I needed 4.1.1 in order to get the menu that unlocks the cell. However after doing all the instructions and getting the cell rooted when I type the code *#197328640# I only get the same menu that was there when I had the 4.1.2 version on the cell, and of course it will not let me unlock the phone.
Is there any other way, like modifying some file or something like that, which could help unlock it? I am not afraid of having to use and editor to mess around with files. Any help will be appreciated.
Click to expand...
Click to collapse
type the code, go to 1.debug screen, then 8.phone control, and then 7.network lock. i'm currently on 4.1.2 (with mg4 modem), and i can't get past 7.network lock (it says menu not exist). please let me know if on 4.1.1 you are able to get past 7.network lock and unlock the phone, cause i want to downgrade too on 4.1.1 for unlocking.
I get the same thing you are getting with 4.1.2, my stayed as it was on 4.1.2. The downgrade did not work.
abyss1957 said:
I get the same thing you are getting with 4.1.2, my stayed as it was on 4.1.2. The downgrade did not work.
Click to expand...
Click to collapse
well, i gave up and asked a guy with z3x box to unlock it for 11€ . now i can flash any rom i want and still be unlocked, as long as the modem is above mg4
Second try
Sorry you gave up I am still fighting with mine. I found this thread: http://forum.xda-developers.com/showthread.php?t=1737449
posted by Faryaab back in June 2012 and it's got to builds on the page that were supposed to be previous builds for 4.1.1. What I would like to know if someone is monitoring this is if those builds are still working so that I can download and experiment with them to see if I finally get the menu to unlock. Any help will be welcomed.
abyss1957 said:
Sorry you gave up I am still fighting with mine. I found this thread: http://forum.xda-developers.com/showthread.php?t=1737449
posted by Faryaab back in June 2012 and it's got to builds on the page that were supposed to be previous builds for 4.1.1. What I would like to know if someone is monitoring this is if those builds are still working so that I can download and experiment with them to see if I finally get the menu to unlock. Any help will be welcomed.
Click to expand...
Click to collapse
well, why dont you pay a few dollars and unlock it? i can put you through the guy that helped me. you need a decent pc and a good internet connection.
It seems that there is a way to unlock 4.3, use this tutorial that @.NetRolller 3D sent to me. Firstly, i think you need to update to 4.3, then follow the steps:
Hi!
Follow this tutorial:http://forum.xda-developers.com/showthread.php?t=1718665
Skip steps 9-12 (including the reboot step - important! Do NOT reboot mid-unlock, or you will have to start over!)
Instead, execute (at a Unix shell) the command "(cat nv_data.bin; echo -n Samsung_Android_RIL) | md5sum" on the NEW (modified) nv_data.bin to get the md5 value to use in step 14.
Should work with 4.3 or even KitKat when it's released, unless Samsung fundamentally changes the way SIM locking works on this phone. Samsung closed down the original Voodoo unlock in an update by removing the "correct" MD5 printout from the log error messages, but the signature scheme is unchanged, and trivially easy to overcome once you know the magic constant "Samsung_Android_RIL" appended to the end of nv_data.bin.
Click to expand...
Click to collapse
Please let me know if it works for you so we can make a sticky topic for people who want to unlock 4.3. :good:
Only one thing
darkmage93 said:
It seems that there is a way to unlock 4.3, use this tutorial that @.NetRolller 3D sent to me. Firstly, i think you need to update to 4.3, then follow the steps:
Please let me know if it works for you so we can make a sticky topic for people who want to unlock 4.3. :good:
Click to expand...
Click to collapse
Thanks darkmage93 for this link. Like the modified instructions say: "Instead, execute (at a Unix shell) the command "(cat nv_data.bin; echo -n Samsung_Android_RIL) | md5sum" on the NEW (modified) nv_data.bin to get the md5 value to use in step 14." This is the only thing I do not know how to do. I never worked with Unix, and if it is done with in the phone I still don't know. The only funny thing is when I looked at the nv_data.bin it already had the number changed to 00. I will look some more and may finally go with the paying option. :laugh:
abyss1957 said:
Thanks darkmage93 for this link. Like the modified instructions say: "Instead, execute (at a Unix shell) the command "(cat nv_data.bin; echo -n Samsung_Android_RIL) | md5sum" on the NEW (modified) nv_data.bin to get the md5 value to use in step 14." This is the only thing I do not know how to do. I never worked with Unix, and if it is done with in the phone I still don't know. The only funny thing is when I looked at the nv_data.bin it already had the number changed to 00. I will look some more and may finally go with the paying option. :laugh:
Click to expand...
Click to collapse
i don't know either how to use unix, but i could've find out how if i weren't unlocked already. i feel sad now that i didn't recieved NetRoller's PM earlier maybe this tutorial works... so do some researching and see what you can do.
Any progress for unlocking S3 on MG4+ Baseband?
Hi
I have just bought a 2nd hand Galaxy S3, it's looked and on Android 4.3
I just downgraded to 4.1.2 and tried GalaxySimUnlock.apk but no success ( it says that the current EFS is not supported)
I am wondering if there is any solution for unlocking i9300 with EFS v2 (mg4+)
Follow the tutorial posted here a few posts up. It should work.

Categories

Resources