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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.
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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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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.
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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

Not Registered on Network

Hi guys,
I recently picked up a used S4 on Craigslist for cheap because the guy "screwed up" using Odin and flashed something that caused his phone to not register on any networks. I figured, what the hell, it's cheap enough and I might be able to restore it. So far I've restored the Rogers firmware over Odin and tried installing a custom rom/recovery too. I'm still getting this problem unfortunately. The IMEI reported with *#06# and in the status screen does match the sticker on the inside of the phone.
So I'm sure everyone's going to suggest that the phone was stolen and the IMEI has been blacklisted. My provider (Fido/Rogers) apparently doesn't care if the IMEI is blacklisted, they'll let it run anyway. I called up Fido anyway (since I'm a Fido customer) and asked them about the IMEI of this phone and they say they don't have any record of anyone calling in reporting it stolen and they don't have an IMEI database so she didn't have much to say about it.
Does anyone have any other suggestions? I've also flashed just the kernel, and I will flash a modem onto it too. I know my SIM card works, and both my SIM card and the last owners SIM cards don't work. I know the radio works because it picks up the emergency signal fine, and the SIM tray isn't damaged because when I put in my Fido SIM the Fido APN's automatically come up, as well as the lock screen goes from "No SIM inserted" to "unregistered SIM." Could my EFS partition be borked? Wifi works and IMEI shows up correctly.
The buyer said he would take the phone back if I can't fix it, but I want to try a bit more before I give up. If anyone has any ideas or suggestions, that would be great. Thanks a lot in advance XDA!
Summary:
-Used S4
-Owner flashed something wrong in Odin
-Gets "Not registered to network" error, unregistered SIM error
-Tried restoring
-Tried new ROM/Recovery
-Carrier says IMEI is fine, also tried directly registering the IMEI to my account
-IMEI is correct in settings/sticker on back of phone
-Wifi/everything else all works

Sounds like it's SIM locked to a different network. Try the the guide here: http://forum.xda-developers.com/showthread.php?t=2285431

MatinatorX said:
Sounds like it's SIM locked to a different network. Try the the guide here: http://forum.xda-developers.com/showthread.php?t=2285431
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Click to collapse
My girlfriend has a Bell sim, which when we insert, gives us the "Please enter unlock code" screen.
My sim does not do that. I know this device is for my carrier, but I figure the easiest way to get this going is to just unlock it and see if the problem persists on other networks.
I've tried that unlock tutorial before. The first time I tried it, when I just got the phone from the previous owner, it said "Golden-backup does not exist" so I couldn't do the restore step of that guide. After Odin-flashing everything and starting over, I can't even get into the UMTS menu anymore! I'll try another restore and give it another go though.
Edit: Another problem. I did a restore again using Odin and notices that it never properly wipes the phone. When I finish flashing, my Wifi still autoconnects on first boot, and every few seconds, a process crashes causing the phone to freeze. Has anyone heard of this kind of problem before?

Quick update:
Managed to Odin-flash it to the earliest firmware I could find for the phone without any crashing or freezing problems. Trying to do the network unlock method mentioned online. It does not work, even though I'm following the instructions to a T. Could it be that my EFS partition is borked and that the NV rebuild can't happen, meaning my radio configuration would also be borked?
Edit: Oh and when I booted up my phone for the first time, the phone was actually ON Fido! But within a few seconds, it went back to "Emergency calls only."

Hmm, that is some odd behavior, and definitely not a carrier lock. Shame it's never that simple to fix.
Not quite the same as your issue, but I lost my ability to make and receive calls after flashing a newer modem on an AOSP firmware. Flashing custom kernels, older modems, the latest stock rom and kernel were no help at all. I tried everything I could think of short of groveling. In the end the only way I got everything working again was to flash the original factory firmware my phone shipped with, factory wipe it from stock recovery, then flash it again. If you've already tried that (and I'm guessing you have), consider contacting Samsung regarding warranty. They've been really good to me in the past, even with second-hand phones.
I can confirm that Odin doesn't clean everything out. In my trials I also noticed that flashing via ODIN without a factory reset presented no setup wizard, caused lots of FC's and left some previous files hanging around.

Sounds like a bad sim tray.
Sent from my SAMSUNG-SGH-I337 using xda premium

make sim fit tighter
graydiggy said:
Sounds like a bad sim tray.
Sent from my SAMSUNG-SGH-I337 using xda premium
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Click to collapse
I had trouble with my handset after it got run over in the street, making it's otterbox earn it's money. The only bad symptom after that episode was Emergency calls only kept recurring.
I cut a tiny square of transparent scotch tape, avoided touching the sticky side, and placed it squarely on the SIM chip's backside, to make it fit the sim slot more snugly. It sounds like you should try stacking two or three layers on your chip as it sounds to be more loose than mine is.

Hi everybody! Thanks for all the help trying to fix it! It ended up being that the guys the previous owner had unlock it used the debug-menu unlock method and my phone was one of the ones that doesn't accept it. Lots of other people complained about similar problems as me in the free unlock method thread. In the end, I paid for the FastGSM USB Unlock method and it fixed the problem.

OH MY GOSH YOU JUST SAVED ME from buying another phone!! THANKS so much.. I added 3 layers of tape on the back of my sim and it works!!! weird.. cause I have the Dual Sim.. and it was the first sim that would not work. the second sim was fine.. anyways.. THANKS SO MUCH!!

LS997 SIM card not recognised

I just got an LS997 V20 and so far I'm really liking it.
However, since I'm using it in the UK, I needed to network unlock it. after doing this, I hoped that I could use my simcard, however (as you can see in the added image) it still shows a simcard error. the simcard works, however since in my other phone its being recognised.
I think I read somewhere that the sprint ROM blocks simcards that aren't Sprint. I tried to unlock the bootloader and fastboot, but haven't been able since I accidentally installed the latest updates. is there any solution available or so that can fix it without needing root or the bootloader unlocked? I really want to use this V20 as a phone and not as just a camera and mp3 player
Is there any way to fix it?

katsuowota said:
I just got an LS997 V20 and so far I'm really liking it.
However, since I'm using it in the UK, I needed to network unlock it. after doing this, I hoped that I could use my simcard, however (as you can see in the added image) it still shows a simcard error. the simcard works, however since in my other phone its being recognised.
I think I read somewhere that the sprint ROM blocks simcards that aren't Sprint. I tried to unlock the bootloader and fastboot, but haven't been able since I accidentally installed the latest updates. is there any solution available or so that can fix it without needing root or the bootloader unlocked? I really want to use this V20 as a phone and not as just a camera and mp3 player
Is there any way to fix it?
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Click to collapse
If you have updated your phone to August OTA. Then you will be left with no other option than to purchase a sim unlock.

datrmon said:
If you have updated your phone to August OTA. Then you will be left with no other option than to purchase a sim unlock.
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Click to collapse
I already bought a network unlock that went via an app. I bought it from lgsimunlock.com . Any other ideas? I'm not even sure if that network unlock worked...

katsuowota said:
I already bought a network unlock that went via an app. I bought it from lgsimunlock.com . Any other ideas? I'm not even sure if that network unlocks worked...
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Click to collapse
I'm in the same shoes as you..Got my phone updated till August bought a remote unlock but didn't work.
I don't know whether phone unlocks no longer works on LG LS997.

Has antoje found a solution to this? I also have the same issue

[Q] Moto G5 Plus Stuck In "Limbo"?

As of this point the warranty on it has long since expired (for both Motorola and Target, the place where it was purchased) so we're pretty much willing to try anything to get it working
I've got with me here a G5 Plus XT1687 that, at best, I can describe as being in a state of "limbo". Its bootloader mode can only be set to flashing_unlock and flashing_lock. We've obtained the unlock key from Motorola's tool and have tried fully unlocking the bootloader multiple times following the guide on XDA, but it seems to not want to accept the command fully and remains on flashing_unlock. When I try to relock everything to start over, it gets stuck on "flashing_lock" and won't go back to fully locked. When it's in the flashing_unlock state I am able to flash ROMs and TWRP builds, so technically it's unlocked.... sort of. I'm unable flash SOME things, like new bootloaders or gpt partition tables, but other things will work just fine, albeit with the occasional "invalid signature" message following flashing. But this right here is only the start of our problems.
Having purchased the US retail XT1687 model, it was supposed to come carrier unlocked out of the box. My friend who got this didn't have a SIM when he got it at the time, so he just used it as a WiFi-only media player sort of thing. When he finally got a T-Mobile SIM and put it in, it asked him for an unlock code. This of course doesn't make any sense, because we didn't get this from a carrier, so why would it be locked to anything in the first place. It was tried with multiple different SIM cards, running multiple different ROMs (and even stock firmware) all with the same result: the phone seems to be network locked to nothing at all.
I tried calling Motorola and they said they can't make an unlock code for us since it's the carrier that decides what algorithm to use for network unlock codes... but this phone didn't come from a carrier, so I don't know what to do.
Fixing the bootloader thing would be nice, but my main goal here is to try and remove this nonsensical network lock so my friend can actually use it with T-Mobile. At this point he doesn't want to send it back (since we'd have to pay for the repairs, and he got a cheap LG to use as a primary phone anyway). That being said, we're pretty much willing to try anything to get it working. Any suggestions?
EDIT: just want to mention as well, we've never had a problem with the IMEI being set to 0. It's always been what it originally was

Question on T-Mobile Variant Amazon Renewed and Unlocked

So I recently picked up the T-Mobile version of the OnePlus 6T (A6013) from Amazon that was refurbished by Amazon. Based on the reviews, I expected that I would have to unlock the sim with T-Mobile before I could even use it. Now that I received the phone, upon booting, there was no T-Mobile animation, and I was able to pop both my AT&T sim and my (work) Verizon sim, both totally work to my pleasant surprise. Now that I'm digging into the unlock/root process, I'm a bit unsure if my bootloader is still locked and I need to take my phone from the T-Mobile rom to the international rom, or if I potentially can go straight into installing TWRP recovery and flash new ROMs.
Additionally, if I do go to the international rom, will I still be able to use my Verizon sim? That's not as important, but definitely a nice touch since it's for work, and I'd like to not have to carry around 2 phones anymore.
Any and all help would be much appreciated!! Thanks in advanced!
UPDATE:
So I went ahead and tried the update process to take my phone to 10.0, but every time I update it, even when attempting through OOS' local update function, when I try booting the phone, it gives me an error along the lines of "FW version does not match SW version" - does anybody know what's up with this? Can't seem to do anything else and have had to restore it multiple times with MSM Tool. Will going through the 7-day unlock process help rectify this?