Unlock Code from AT&T - Galaxy Tab General

I have entered my unlock code from AT&T and it worked fine. I did find out the hard way that if you intend to use an unlock code supplied from AT&T you must use an AT&T firmware. If you use the Euro firmware on the AT&T to gain phone capabilities the AT&T supplies unlock code won't work. - yes, I know there are several ways to manually unlock your phone using Roto's method and others - this was just something I found interesting.
The question now is , if you use an AT&T unlock code and you then upgrade your firmware to the Euro firmware, will you loose the AT&T unlock?
is the Unlock lost during a .pit function.
just trying to learn more about how this works -
thanks

Anyone have any idea on this?
Just checking bac to see if anyone knows whether this will effect the AT&T Unlock - loading Euro firmware

Can You assist me on getting the code to unlock an AT&T tab?

I don't believe flashing a new rom should affect your subsidy lock status as long as it doesn't overwrite the efs partition. You should definitely do a rotobackup prior to flashing though, just in case.

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[Q] Official Tmobile JIC6 Update loses unlock

Ok.. sooo.. Some people have gotten the JIC ota update from tmobile USA.. Well i decided to go ahead and update it. Well I lost the carrier unlock on it now.
I was just the stock rom on it rooted and unlocked using the one click unlock to get teh codes to unlock the phone. It worked then. Now with the JIC6 update i have lost that unlock. Also the one click unlock app to get the codes no longer works. I have also seen other post about using a hex editor to look at the nv_data.bin file to look for the unlock codes (no success). I have the original code from before the update, but it does not work. Is there a Way to unlock the vibrant with the JI6 update?
Just enter the same code you got last time. and it will unlock you.
If anyone else reads this. Please keep your code. and put it someplace safe. everytime you flash you will need to re-unlock most like a iphone.
Interseting that i didnt even have to reenter it. First when i updated and than checked teh network lock code showing that it was on so i than proceded to use the one click unlock app and it didnt not work. SO lucky for me i have a screenshot of the code when i first used the unlock app. so i did the same process and put in another carrier sim and entered the unlock code. It told me it was unsuccessful. Now that i went to try it again after my first post. I procceded to put in the other carrier sim card and it was unlocked.
Oh well. Thanks!
rhcp0112345 said:
Just enter the same code you got last time. and it will unlock you.
If anyone else reads this. Please keep your code. and put it someplace safe. everytime you flash you will need to re-unlock most like a iphone.
Click to expand...
Click to collapse
He says in the OP that he has the original code, but it doesn't work.
I know this is actually a known Samsung problem that has happened on many of their phones (even ones that came unlocked from what I've read) & generally re-entering the key works.
If it doesn't work for me, I'll call up TMO & complain. I bought the phone at retail price off contract, so they should give the code w/o a problem.
Generally as long as you've been a customer with them for at least 30-90 days (and your phone is beyond the returnable period), they'll give the unlock code if you call & ask for it. Sometimes you have to say that you'll be travelling out of country in order to get them to give it to you.
Is there a way to unlock without putting in a foreign SIM?
WTF !
Do you mean that updating the device to JI6 will lock the phone ?!
I unlocked mine with a code is that means I'll lose the unlock ?!
I discovered this a few weeks ago. I was working on a fix when I bricked my phone.
I just got my replacement on Tuesday and will be continuing the fix.
What happens is either something within the ODIN process, or on the rom itself puts a generic bml3 block on that contains all F's where the unlock code is stored.
I also know that it's stored on the nv_data.bin in the ./efs block.
I have been able to get my unlock code to be seen by the sgux program when modifying the bml3 file and pushing it back to my phone.
I will be working on nv_data next, though, seeing as my new phone has the unlock codes already, I'll have to do some editing and backing up.
I have my old codes with me so can someone confirm if old codes still works after the update ?
Thanks for sharing the information with us regarding phone. It may help us n the future.
Steve
mohitmoudgil said:
I have my old codes with me so can someone confirm if old codes still works after the update ?
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Click to collapse
Yeah after my original posts i think your old code will work. It will probably give an error of that it was unsuccessful. Just ignore it. and and just reboot the phone.
so basically to recap what i did.
updated JIC6 ota with tmobile.
checked network lock *#7465625# ( showing that the network lock was on.)
tried that software one click app to get code. (unsuccessful)
powered off phone
put in another carrier sim card.
bootup phone.
put in old code i had from before update to jic6 ( says that it was unsuccessful )
power off phone
put back Tmobile sim
power off phone
put other carrier sim in
unlocked!
i dont have tmobile sim ...do you think it needs that ?
I ran into this on my old vibrant running jfd. Unlocked and rooted and I needed to reflash jfd with odin. Phone relocked itself even reflashing same firmware. Efs data didn't change because the unlock code could still be retrieved. But when I inserted my att sim the code unlock said unsuccessful no matter what I tried. It never unlocked again.
sabooher said:
I ran into this on my old vibrant running jfd. Unlocked and rooted and I needed to reflash jfd with odin. Phone relocked itself even reflashing same firmware. Efs data didn't change because the unlock code could still be retrieved. But when I inserted my att sim the code unlock said unsuccessful no matter what I tried. It never unlocked again.
Click to expand...
Click to collapse
So old codes didnt work for you and you are stuck.
can anyone confirm if we should update or not to remain unlocked ?
anyone confirming this ?
I got two different statements here
Ok, I updated my vibrant to JI6 today and it didn't lock my device !!
Since I don't use T-mobile data plan so I downloaded the leaked rom from (Vibrant Android development) section then I flashed the stock rom followed by JI6 ROM and it's working perfect !!
Maybe because mine is unlocked officially by T-Mobile code !
Or may be only ota is locking
We need more info
Sent from my SGH-T959 using Tapatalk
Updated mine through odin.. still unlocked.
thanks...i just updated with odin and mine is unlocked
Now time to check whats new :d
They will not release a code nor will att for 9 months after the phone is out. You may call and ask.
Thats why i offer unlock services for these phones.
Successful OTA update yesterday, NO NETWORK LOCK, phone was rooted with no lag fix

AT&T Galaxy Tab Unlock Code not working

Anyone have any idea why my Unlock code won't work when entered. It says unsuccessful when I enter it.
AT&T i987
running Russian to Euro firmware method & modem file
using T Mobile Sim to trigger the Unlock Field at boot.
Purchased from Cellunlocker.net - they insist the code is correct
Does it need a different modem file?
thanks
3dadd said:
Anyone have any idea why my Unlock code won't work when entered. It says unsuccessful when I enter it.
AT&T i987
running Russian to Euro firmware method & modem file
using T Mobile Sim to trigger the Unlock Field at boot.
Purchased from Cellunlocker.net - they insist the code is correct
Does it need a different modem file?
thanks
Click to expand...
Click to collapse
Check that your IMEI was not changed after reflashing. If not then it is very likely that unlock would work only with your original firmware. If it has been changed then something important got corrupted causing unlock to fail.
I've received unlock code from US T-mobile and it dod not work also after reflashing.
However, changing one byte in the system file as it descibed multiple time worked without any issue on both tmobile and att tabs.
3dadd said:
Anyone have any idea why my Unlock code won't work when entered. It says unsuccessful when I enter it.
AT&T i987
running Russian to Euro firmware method & modem file
using T Mobile Sim to trigger the Unlock Field at boot.
Purchased from Cellunlocker.net - they insist the code is correct
Does it need a different modem file?
thanks
Click to expand...
Click to collapse
Easy way to fix this:
http://forum.xda-developers.com/showthread.php?t=843323
Cellunlocker are not able to get the code.
My samsung is not rooted and I think I can not unlock or root it by myself.
Any idea to help me????
Unlock code for tab
I got a code from cellunlocker.net too, and initially it came back incorrect, saying "sim net pin error" or something like that and they too insisted it was correct,
BUT what i realized is that the was the code was correct and I had to follow the instructions here:
http://forum.xda-developers.com/showthread.php?t=843323
seems like alot of tabs the IMEI changes, or the software has to be adjusted

Samsung Focus Carrier/Sim Unlock Question

I have an 1.3 rev Samsung Focus. It was an unlocked model I got from outside. I was in the US at the time of Mango update and updated my phone with Mango from AT&T. Now I have moved out of the US and want to unlock it. AT&T doesn't have the unlock code because I didnt purchase it from them. Any Ideas on what I can do? Will a custom ROM help me with Unlock? When I check lock status, it is SIM Lock is Disabled, only Network lock is enabled.
I'm not sure what you meant by "It was an unlocked model" in the context of "out of the US and want to unlock it". Was it unlocked or locked? Anyway:
Read the wiki, (carrier) locks are in NVRAM, no relation to flashing whatsoever, so any custom ROM won't SIM unlock your phone.
Have you tried ebay? Unlock is cheap as $1 and it doesn't hurt to try (unlock via IMEI - I unlocked AT&T and Rogers Focuses). If that fails, I recommend fastgsm, I've unlocked my own AT&T Focus with them, via USB (no affiliation).
EnderPsp said:
I'm not sure what you meant by "It was an unlocked model" in the context of "out of the US and want to unlock it". Was it unlocked or locked? Anyway:
Read the wiki, (carrier) locks are in NVRAM, no relation to flashing whatsoever, so any custom ROM won't SIM unlock your phone.
Have you tried ebay? Unlock is cheap as $1 and it doesn't hurt to try (unlock via IMEI - I unlocked AT&T and Rogers Focuses). If that fails, I recommend, I've unlocked my own AT&T Focus with them, via USB (no affiliation).
Click to expand...
Click to collapse
It was carrier unlocked, as in I could place any sim in the phone and it would work. After I updated it on my Zune with Mango, it was loaded with AT&T's version and hence locked to AT&T. Now AT&T doesn't have the record of the IMEI in their database and aren't able to provide me with an unlock code. They were able to provide the unlock code for my other windows phone that I purchased from AT&T. Thereby lies my predicament. Let me try the ebay version, if not I hope FastGSM works. Thanks.
I was not able to get the unlock code from ebay. But FastGSM seemed to work wonders. I used their USB unlocking tool and it worked just fine. Thanks for the tip.

Telus i337m menu unlock not working. Idea?

Hey guys I'm looking for advice with my new Telus locked phone. I've tried the unlock menu method South the latest and even downgraded firmware. Every time it is still locked when I boot up.
Had the same issue with my s2 previously and resolved it by flashing a us carriers older stock firmware and modem then unlocking it then restoring back the Canadian one.
what I've read the bootloader complicated things with this phone. Can I change to old att modems and firmware? It seems only Odin ones exist and I don't want to do something stupid. I don't want to spend 45 on a code as I understand it won't work after trying the menu method. Any ideas or do I have to pay for the gsmusb method.
I ended up just doing the fast gsm usb unlock for $15.

Need help getting my AT&T sim card to work on my T-MOBILE ONEPLUS 6T

i know I posted earlier about a different issue, sorry for spamming the board.
I have a T-Mobile 1+6t with 9.0.15, i have been searching and tinkering all day and am still very confused about how to do this. From what I've seen, it is definitely possible, and every guide i've looked at is very simply laid out but i keep running into issues. Firstly, I have successfully converted to international version using the MSM tool. I thought this would be enough for my sim card to work but it is still not working. Now I am reading a bunch of other things about sim unlock and bootloader unlocking. Sorry but I am a noob at all of this. Can anyone point me in the exact direction in order for me to get my AT&T sim card working in my T-MOBILE 1+6t?
So my information is : TMOBILE 1+6t converted to International, running 9.0.15, and need to get AT&T sim card working.
What Ive done so far: converted to international.
What am I missing?
Before the conversion, you needed to get the carrier unlock code from TMo.
If you have not done that, you need to convert back to TMo firmware, get it unlocked from TMo, use the unlock app to unlock. After that you can flash the international firmware.
67BGTEV said:
Before the conversion, you needed to get the carrier unlock code from TMo.
If you have not done that, you need to convert back to TMo firmware, get it unlocked from TMo, use the unlock app to unlock. After that you can flash the international firmware.
Click to expand...
Click to collapse
is there a way around that? before i converted, i did see the unlock app and tried to use it but it said the device is not eligible. I called t-mobile and they said they'd send me instructions to unlock. But i am not totally sure if the phone is paid off, it was my gf's ex's phone who i don't know and she doesn't want to talk to
Right now i am trying something else - from the guides i've gathered, you need to be on 9.0.11 to unlock the bootloader and need the bootloader unlocked to unlock the sim, so:
I am downloading the files to downgrade to 9.0.11 international, unlocking the bootloader after that, then using this guide to unlock the sim. will this work?
There's no workaround.
If someone stole my TMo op6t and tried to use it in another network, he or she can't unlock it, as I own it and it may not have paid off.
Actually you can follow this guide ( https://forum.xda-developers.com/oneplus-6t/how-to/guide-sim-unlock-t-mobile-version-type-t3915269 ) to remove the Sim lock. In essence you'll convert it to international, erase the two modem files containing the Sim lock info, revert it back to the TMO version. Apply to OnePlus for your unlock token, wait a week to get it, then unlock bootloader. End result is a fully bootloader and Sim unlocked phone. Or if you're not interested in unlocking the bootloader you can skip the last part. You'll still have an unlocked phone.
jestyr8 said:
Actually you can follow this guide ( https://forum.xda-developers.com/oneplus-6t/how-to/guide-sim-unlock-t-mobile-version-type-t3915269 ) to remove the Sim lock. In essence you'll convert it to international, erase the two modem files containing the Sim lock info, revert it back to the TMO version. Apply to OnePlus for your unlock token, wait a week to get it, then unlock bootloader. End result is a fully bootloader and Sim unlocked phone. Or if you're not interested in unlocking the bootloader you can skip the last part. You'll still have an unlocked phone.
Click to expand...
Click to collapse
Hey I actually successfully followed this guide last night and am now typing on my 1+6t international w/ unlocked bootloader + sim unlock. I unlocked the bootloader using a different guide. One question: will updating my phone affect this sim unlock? Because I know you need 9.0.11 to unlock the bootloader, and you need an unlocked bootloader to use this sim unlock guide. I know there is an update available, Is it safe to update?
TrippyAzN said:
Hey I actually successfully followed this guide last night and am now typing on my 1+6t international w/ unlocked bootloader + sim unlock. I unlocked the bootloader using a different guide. One question: will updating my phone affect this sim unlock? Because I know you need 9.0.11 to unlock the bootloader, and you need an unlocked bootloader to use this sim unlock guide. I know there is an update available, Is it safe to update?
Click to expand...
Click to collapse
The Sim unlock sticks permanently, I've updated several times after doing the SIM unlock both on the TMO version and the international version and have had no issues at all. I flipped back and forth between the two trying to decide which I wanted to run. Stuck with the international just for the more consistent updates.
jestyr8 said:
The Sim unlock sticks permanently, I've updated several times after doing the SIM unlock both on the TMO version and the international version and have had no issues at all. I flipped back and forth between the two trying to decide which I wanted to run. Stuck with the international just for the more consistent updates.
Click to expand...
Click to collapse
Thanks for the info brotha!

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