After doing some research and doing a little bit or reading, the HTC ONE M9 T-Mobile variant has the same unlocking issues as The T-Mobile S6 and S6 Edge where the software only allows for an unlock through the unlock app and will reject any unlock codes. However, flashing the International model's firmware will rid of this road block and allow for an unlock (HTC ONE M9). I wanted to try the same method with the Galaxy S6.
Wanted to ask if a brave soul who has rooted and flashed TWRP on their T-Mobile S6 could buy an unlock code, flash the XtreStoLite Pure Edition rom from the regular S6 forums and try unlocking the phone with the international rom on it. Again, this method worked with the TMobile HTC ONE M9 and will likely work for the S6. I would try it myself but I have the edge and we dont really have any ROMS at all.
Also a heads up, if you do try and it doesn't work, wait until the dev of XtreStoLite Pure Edition updates the rom to add back some important files. it may be missing some important system APk for the unlock just like its missing important APK that enables LTE
I was thinking this exact thing. I wonder if it will work...i mean if it worked on the HTC One M9, it should be the same in this situation. Also since its just a software thing, i wonder if there is a flag we can set to trick it into being unlocked as well. Thoughts?
serialtoon said:
I was thinking this exact thing. I wonder if it will work...i mean if it worked on the HTC One M9, it should be the same in this situation. Also since its just a software thing, i wonder if there is a flag we can set to trick it into being unlocked as well. Thoughts?
Click to expand...
Click to collapse
Tried this already and it does *not* work.
All codes are unsuccessful with unlocks.
We need kernels!
Of course if I were in the market for the M9, I'd just buy it from ATT since its bootloader is unlockable from HTCDev. Or did they change that too?
cpufrost said:
Tried this already and it does *not* work.
All codes are unsuccessful with unlocks.
We need kernels!
Of course if I were in the market for the M9, I'd just buy it from ATT since its bootloader is unlockable from HTCDev. Or did they change that too?
Click to expand...
Click to collapse
Still works the same.
Can we flash international firmware?
cpufrost said:
Tried this already and it does *not* work.
All codes are unsuccessful with unlocks.
We need kernels!
Of course if I were in the market for the M9, I'd just buy it from ATT since its bootloader is unlockable from HTCDev. Or did they change that too?
Click to expand...
Click to collapse
'
Ktoonze posted a kernel yesterday - I have not tried flashing the International rom yet - someone said data is not working on it when flashed on N910t? but would love to try to unlock if data is working?
Yeah cant try this myself since the 925t doesn't have any custom roms yet. :-/.
cpufrost said:
Tried this already and it does *not* work.
All codes are unsuccessful with unlocks.
We need kernels!
Of course if I were in the market for the M9, I'd just buy it from ATT since its bootloader is unlockable from HTCDev. Or did they change that too?
Click to expand...
Click to collapse
did you flash the international 920F firmware?
is there anyway to disable to Device Unlock app in App Manager?
osmosizzz said:
did you flash the international 920F firmware?
Click to expand...
Click to collapse
Failed at writing NVRAM.
Tried the Xtrelite rom and did get prompted for code but the code (from cellunlocker.net) did not work.
I dunno, I have a new IMEI since I swapped for an edge. Just going to wait this out and see if it activates in two weeks once the "remorse period" passes.
Do you think it would have worked if you had used the same IMEI that you purchased the unlock code for???
Dude flash metro pcs firmware... don't forget to thank!
noobsaibot34 said:
Dude flash metro pcs firmware... don't forget to thank!
Click to expand...
Click to collapse
Hi, I have the same issue but now Im on t mobile latest firmware, every time I try to flash metro pcs firmware I get an error, something about SW binary error, maybe because metro pcs firmware its older, can you help me to get the new firmware or any workarround? thanks!
jonaspaz07 said:
Hi, I have the same issue but now Im on t mobile latest firmware, every time I try to flash metro pcs firmware I get an error, something about SW binary error, maybe because metro pcs firmware its older, can you help me to get the new firmware or any workarround? thanks!
Click to expand...
Click to collapse
Go to www.sammobile.com and download the latest firmware for metro pcs s6 (SM-G920T1) and that should work for you. according to sammobile tmobile and metro pcs received updated firmware on the same date. downloads on the site take quite some time though, just a FIY.
Quickvic30 said:
Go to www.sammobile.com and download the latest firmware for metro pcs s6 (SM-G920T1) and that should work for you. according to sammobile tmobile and metro pcs received updated firmware on the same date. downloads on the site take quite some time though, just a FIY.
Click to expand...
Click to collapse
Thanks!
Related
Hello
I have unlocked my s6 by using the metro pcs firmware upgrade method .
I have reflashed the t mobile deoxed version rom .
All was working fine until few hours ago when my phone stopped receiving network .
Reboot didnt work too until i switched on wifi back on .
Is it something to really worry about ?
One more queery: once i unlocked my phone does it mean its permanently unlocked to any network because right now im residing in asia .
younussm said:
Hello
I have unlocked my s6 by using the metro pcs firmware upgrade method .
I have reflashed the t mobile deoxed version rom .
All was working fine until few hours ago when my phone stopped receiving network .
Reboot didnt work too until i switched on wifi back on .
Is it something to really worry about ?
One more queery: once i unlocked my phone does it mean its permanently unlocked to any network because right now im residing in asia .
Click to expand...
Click to collapse
I think both questions have the same answer, you can't use any other firmware other than metro pcs. I remember seeing that in a different thread. If you paid it off free and clear call tmobile and they should permanently unlock it for free. I think all you need is your imei or serial number.
So can i reflash the metro pcs firmware and still have the device unlocked ?
I have purchased the unlock code off one of the leading sites on web.
I called T-mobile and pestered the hell out of them and they in return pestered the hell out me, in the end I have an unlocked phone with no flashing this and that.
younussm said:
So can i reflash the metro pcs firmware and still have the device unlocked ?
I have purchased the unlock code off one of the leading sites on web.
Click to expand...
Click to collapse
I can't give you a answer but why not call tmobile like ipaq_101 did? That way you don't need to care what firmware or rom your on, it will be universally unlocked. If long distance calling is a issue you can use the online help, just make sure the first rep you talk to knows you won't stop bothering them until it's unlocked.
Is it not possible to install a ROM and then, say, flash a MetroPCS modem or something? For the record, I'm in the same predicament; I'd like to flash a ROM, but am running stock MetroPCS firmware that allowed me to use an unlock code.
Sent from my Nexus 7 using Tapatalk
phobia09 said:
Is it not possible to install a ROM and then, say, flash a MetroPCS modem or something? For the record, I'm in the same predicament; I'd like to flash a ROM, but am running stock MetroPCS firmware that allowed me to use an unlock code.
Click to expand...
Click to collapse
You can flash any compatible ROM. I Odin flashed the MetroPCS firmware only so that I could permanently unlock the SIM. (I found that the T-Mobile Device Unlock is buggy and not exactly permanent). Then I flashed the international "F" version of Alliance ROM along with UniKernel. Been working great!
As long as you don't ever flash a T-Mobile radio, you'll stay unlocked!
Hey guys,
So I just bought bought a G920T1 and I am aware that it is the same hardware as the G920T with a few software differences (missing download booster). Knowing this, is it safe for me to use the root methods/custom recoveries/custom firmwares of the G920T on my phone?
Thanks
Yes. And by custom firmwares I assume you mean custom roms
Sent from my SM-G920T using Tapatalk
Yup, they are exactly the same phone. So use Unikernel to root, TWRP for recovery, and firmware of choosing.
One thing tho is if you wanna use the unlocking method with Metro which use codes. Then don't flash any TMO modem and bootloader as you will lose the unlock. Just update them to lastest 5.1.1 from sammobile or OTA if you need to. Other then that you should be good to go.
serio22 said:
Yes. And by custom firmwares I assume you mean custom roms
Sent from my SM-G920T using Tapatalk
Click to expand...
Click to collapse
Yeah, it's been awhile since i've been back on xda
stylin350 said:
Yup, they are exactly the same phone. So use Unikernel to root, TWRP for recovery, and firmware of choosing.
One thing tho is if you wanna use the unlocking method with Metro which use codes. Then don't flash any TMO modem and bootloader as you will lose the unlock. Just update them to lastest 5.1.1 from sammobile or OTA if you need to. Other then that you should be good to go.
Click to expand...
Click to collapse
I bought the phone off swappa and it was listed under the T-mobile S6 section, but I noticed that the model number in the pictures was G920T1. I'll probably ask the seller how he unlocked his phone. So flashing a custom ROM should be fine, right? Based on my previous experience flashing my older S3, flashing modems were usually a different .zip than the ROMs and I don't really remember all too much about bootloaders.
crazililazn said:
Yeah, it's been awhile since i've been back on xda
I bought the phone off swappa and it was listed under the T-mobile S6 section, but I noticed that the model number in the pictures was G920T1. I'll probably ask the seller how he unlocked his phone. So flashing a custom ROM should be fine, right? Based on my previous experience flashing my older S3, flashing modems were usually a different .zip than the ROMs and I don't really remember all too much about bootloaders.
Click to expand...
Click to collapse
Yeah flashing custom rom is fine as they don't include the modem nor bootloader. It's just that most newer roms require you to have the lastest bootloader and modem for best experience. Sorry didn't mean to confuse you more, but G920T and G20T1 are the same phone. Some people just swap firmwares between TMO and Metro as the G920T1 is easier to unlock. I have the same version G920T1 and bought code off of ebay to unlock easily.
stylin350 said:
Yeah flashing custom rom is fine as they don't include the modem nor bootloader. It's just that most newer roms require you to have the lastest bootloader and modem for best experience. Sorry didn't mean to confuse you more, but G920T and G20T1 are the same phone. Some people just swap firmwares between TMO and Metro as the G920T1 is easier to unlock. I have the same version G920T1 and bought code off of ebay to unlock easily.
Click to expand...
Click to collapse
Alright, then can I upgrade to the newest Metro bootloader to keep my unlock and then install the newer ROMs? Or would I lose my unlock that way.?
crazililazn said:
Alright, then can I upgrade to the newest Metro bootloader to keep my unlock and then install the newer ROMs? Or would I lose my unlock that way.?
Click to expand...
Click to collapse
Correct and you'll keep the unlock.
stylin350 said:
Yeah flashing custom rom is fine as they don't include the modem nor bootloader. It's just that most newer roms require you to have the lastest bootloader and modem for best experience. Sorry didn't mean to confuse you more, but G920T and G20T1 are the same phone. Some people just swap firmwares between TMO and Metro as the G920T1 is easier to unlock. I have the same version G920T1 and bought code off of ebay to unlock easily.
Click to expand...
Click to collapse
stylin350 said:
Correct and you'll keep the unlock.
Click to expand...
Click to collapse
Hello again, about to get my S6 soon and was wondering if you could point me to some root methods that would work without breaking fingerprint scanner or tripping KNOX. It's been awhile since I've been back in the rooting scene and was hoping you could point me in the right direction. Also, if I want to keep my unlock and upgrade to Tmo 5.1.1 stock, I would flash the Tmo ROM with a Metro bootloader?
I recently purchased the G920T factory unlocked version on eBay, is it safe to Odin any T-Mobile stock firmware, any info will be appreciated, thanks in advance.
Once you above a certain firmware you can't go back. What firmware you currently on?
It is currently on G920TUEU3COK1 can I Odin to the latest T-Mobile G920TUVS3DOJC I understand that I can't go back but is it safe and will it function normally, thanks for the reply.
i have this same question because from what ive read 3COK1 is for Cellular South (aka C Spire). while the 3DOJC is for Tmobile, both under the G920t firmware. are you also on tmobile network with this phone?
What are the benefits of flashing T-Mobile firmware on the USA factory unlocked phone? I have this phone on T-Mobile and wifi calling works. I also get great reception. I assume this phone will get Marshmallow months before T-Mobile releases their build
sebmw said:
It is currently on G920TUEU3COK1 can I Odin to the latest T-Mobile G920TUVS3DOJC I understand that I can't go back but is it safe and will it function normally, thanks for the reply.
Click to expand...
Click to collapse
Does this firmware that the device came with (G920TUEU3COK1) have any carrier branding or logos anywhere? Id like to switch if it doesn't have carrier branding
andreinept said:
Does this firmware that the device came with (G920TUEU3COK1) have any carrier branding or logos anywhere? Id like to switch if it doesn't have carrier branding
Click to expand...
Click to collapse
It has no carrier branding or logos anywhere.
HKSpeed said:
What are the benefits of flashing T-Mobile firmware on the USA factory unlocked phone? I have this phone on T-Mobile and wifi calling works. I also get great reception. I assume this phone will get Marshmallow months before T-Mobile releases their build
Click to expand...
Click to collapse
Are you getting LTE on it.
So I flashed the C Spire firmware and it asked for an unlock code. I flashed back to the original tmobile firmware and it is still locked although it was unlocked before, but the device unlock app says its ineligible for unlock now.
Anybody else encountered this?
Call t mobile customer service and ask them. They can adjust their servers and then the unlock app will work.
tyrone1 said:
Call t mobile customer service and ask them. They can adjust their servers and then the unlock app will work.
Click to expand...
Click to collapse
have you tried it before? because they keep saying that they cant do it
sebmw said:
Are you getting LTE on it.
Click to expand...
Click to collapse
I get LTE. Sometimes get "LTE+". Whatever that means.
andreinept said:
have you tried it before? because they keep saying that they cant do it
Click to expand...
Click to collapse
I'm sorry I misread that this a different model. I'd try to contact the user stifilz to unlock.
andreinept said:
So I flashed the C Spire firmware and it asked for an unlock code. I flashed back to the original tmobile firmware and it is still locked although it was unlocked before, but the device unlock app says its ineligible for unlock now.
Anybody else encountered this?
Click to expand...
Click to collapse
Were you able to get it unlocked? I plan on doing the same, flashing the unbranded to my t-mobile that is currently unlocked.
mon7707 said:
Were you able to get it unlocked? I plan on doing the same, flashing the unbranded to my t-mobile that is currently unlocked.
Click to expand...
Click to collapse
I'd advise that you dont.
To unlock it I had to flash back to the original tmobile rom. From the tmobile rom, the device unlock app failed in different ways.
After i called tmobile over and over I got it unlocked (like 2 hours of calling).
Hurts my heart to see all the tmobile bloat, especially when i dont even live in the US, but at least my phone works
andreinept said:
I'd advise that you dont.
To unlock it I had to flash back to the original tmobile rom. From the tmobile rom, the device unlock app failed in different ways.
After i called tmobile over and over I got it unlocked (like 2 hours of calling).
Hurts my heart to see all the tmobile bloat, especially when i dont even live in the US, but at least my phone works
Click to expand...
Click to collapse
Thank you, I guess I'll just sell this one and buy an international unlocked, glad to hear you got your phone working.
Anyone successfully updated this G920TUEU3COK1 US factory unlocked version to marshmallow? I have Samsung Pay, wifi calling, etc. all enabled on mine and would like to update, but also keep the unlocked non-bloated firmware.
losonn said:
Anyone successfully updated this G920TUEU3COK1 US factory unlocked version to marshmallow? I have Samsung Pay, wifi calling, etc. all enabled on mine and would like to update, but also keep the unlocked non-bloated firmware.
Click to expand...
Click to collapse
Yes its works. However it does add in tmobile bloatware, not bad tho, only about 5 apps
Sent from my SM-G920T using XDA-Developers mobile app
ejbmvp said:
Yes its works. However it does add in tmobile bloatware, not bad tho, only about 5 apps
Sent from my SM-G920T using XDA-Developers mobile app
Click to expand...
Click to collapse
Which method did you use to update the G920TUEU3COK1 US factory unlocked version? Does using the Tmo firmware risk un-unlocking the phone?
losonn said:
Which method did you use to update the G920TUEU3COK1 US factory unlocked version? Does using the Tmo firmware risk un-unlocking the phone?
Click to expand...
Click to collapse
Flashed t-mobile mm via odin. After rebooted it complained about network lock since Im using att sim. I put it back to dl mode. Extracted modem.bin from our 5.1.1 build and Flashed via odin. Bam no more network lock and able to use att sim again.
Followed reddit thread
Sent from my SM-G920T using XDA-Developers mobile app
Hi guys,
I need some clarification re: carrier unlocking and how it works. I recently purchased a carrier unlocked G920T, and I was going to start messing with custom roms/kernels and other goodies. My question is: Will the phone revert back to being locked if I do a factory reset or if I unlock the bootloader and flash custom roms?
I'm not a T-Mobile user, so I can't get another unlock code from them.
Thanks!!
The G920T has a carrier unlocked version, which is probably the one you have, not the T-Mobile one. Even if it is, usually a carrier unlocked device will remain unlocked forever unless it was unlocked using a different or hacky method, then there is a possibility that it will relock
Sent from my SM-G920T using Tapatalk
Yeahh go ahead, mess with it. when it is carrier unlocked, the software doesn't affect it, unless it is a hacky method like @serio22 said, but there isnt such hacky method for the GS6 so have fun.
If it is a G920T (the T means it's from T-Mobile), then carrier unlocking is not a guaranteed state. I paid T-Mobile the full price to get my GS6 and they "permanently" unlocked it. Then after a OTA software patch all of a sudden it locked itself again and I couldn't use my phone for 2 days while they tried to unlock it. T-Mobile's new device unlocking uses a new system which has the phone "phone home" to their servers to check if you're allowed to use it outside of their network. It happened again when I accepted the Android 5.1.1 OTA. So...beware of T-Mobile's not-very-permanent permanent carrier unlocking.
I am living in india..
My relatives brought me the t model ( i wanted f model instead of i sold in india for quicker updates but got t model...lol )
Anyways,
The moment i inserted my sim, it worked like a charm so its unlocked at the moment.
I dont know how they made payment their or how it was unlocked, but the way used must be legit coz its still stock at the moment without root / recovery etc. .
I read humo saying it can get locked again...
My main question, what are the odds of that happening?
Also since i live in india, i wont be able to contact t mobile via phone/walk in, are there ways i can get it unlocked again?
I dont have the bill too if it matters
i believe they have an app that unlock ur device since that is how i unlocked mine. if not u can try to contact customer service online since u r not in US.
With device unlock app , will i have to pay for unlock my s6 g920t or it'll unlock my device for free.
I have an unlocked s6 tmobile from usa, i heard the flashing stock rom will relock the device.
If the phone will relock then how can i unlock it again?
I'm not sure about flashing a stock ROM relocking the device. Mine re-locked when T-Mobile sent Android security patches. This week I did the Android 6.0 OTA update and it has remained unlocked.
Hey guys! i have a factory unlocked version of s6 tmobile, my question is if i can flash the tmobile MM firmware . My model says "country: cellular south" and the firmware country says us tmobile, so i dont know if i can flash without any problems, (Sorry for my english it sucks) thanks !
polipol15 said:
Hey guys! i have a factory unlocked version of s6 tmobile, my question is if i can flash the tmobile MM firmware . My model says "country: cellular south" and the firmware country says us tmobile, so i dont know if i can flash without any problems, (Sorry for my english it sucks) thanks !
Click to expand...
Click to collapse
Polio, i have the same phone and i flashed MM without any problems. Check out the q&a section here and theres a recent thread that talks about how to that refers to a reddit post
Sent from my SM-G920T using XDA-Developers mobile app
bitbank said:
If it is a G920T (the T means it's from T-Mobile), then carrier unlocking is not a guaranteed state. I paid T-Mobile the full price to get my GS6 and they "permanently" unlocked it. Then after a OTA software patch all of a sudden it locked itself again and I couldn't use my phone for 2 days while they tried to unlock it. T-Mobile's new device unlocking uses a new system which has the phone "phone home" to their servers to check if you're allowed to use it outside of their network. It happened again when I accepted the Android 5.1.1 OTA. So...beware of T-Mobile's not-very-permanent permanent carrier unlocking.
Click to expand...
Click to collapse
How did you solve this? My phone stopped working flashed newest (G920TUES5DPK1_G920TXAR5DPK1_G920TUES5DPK1_HOME.tar.rar) and i can't go to older version as that gives me ;
Code:
SW REV. CHECK FAIL DEVICE: 5 BINARY: 3
Christiaanjadieja said:
How did you solve this? My phone stopped working flashed newest (G920TUES5DPK1_G920TXAR5DPK1_G920TUES5DPK1_HOME.tar.rar) and i can't go to older version as that gives me ;
Code:
SW REV. CHECK FAIL DEVICE: 5 BINARY: 3
Click to expand...
Click to collapse
You can't downgrade your bootloader so you'd have to pay to unlock it unfortunately
crixley said:
You can't downgrade your bootloader so you'd have to pay to unlock it unfortunately
Click to expand...
Click to collapse
Got it done remotely!
I have a Galaxy S6 (SM-G920T) from T-Mobile. It was locked. But it has an "Unlock" app installed by default. I used it and phone was instantly unlocked! Fast, easy and free!
I used to live in the US for a year and bought a g920T. Since i had the requirements i Unlocked and came back to my country but because of a problem, I had to install a stock firmware and now the unlock is gone.
So i'm wondering, if someone with a unlocked phone made firmware backup, remove the IMEI, and send it online would it work? I mean, right now it works just fine, so i can backup my IMEI and ID and just restore it if needed.
Please help
danveer said:
I am living in india..
My relatives brought me the t model ( i wanted f model instead of i sold in india for quicker updates but got t model...lol )
Anyways,
The moment i inserted my sim, it worked like a charm so its unlocked at the moment.
I dont know how they made payment their or how it was unlocked, but the way used must be legit coz its still stock at the moment without root / recovery etc. .
I read humo saying it can get locked again...
My main question, what are the odds of that happening?
Also since i live in india, i wont be able to contact t mobile via phone/walk in, are there ways i can get it unlocked again?
I dont have the bill too if it matters
Click to expand...
Click to collapse
I am in same scenario as you are/were,I am also having s6 (Tmobile) please tell me did flashing relocked your device?
So far no
I have flashed recovery - custom rom - kernel
Messed up sometimes so even went back to stock using odin then flashed everything again
Its still unkocked
Hello! I've bought my S6 (SM-G920T) as carrier unlocked but when my pcb has burned due to factory fault and sent my phone to Samsung they gave me again it was locked. I'm from Argentina and I haven't T-Mobile sim to unlock with default application. I've called to my carrier in Argentina and they said me the IMEI it's unlocked but my phone still sais it's network blocked... Can anybody help me?
vita_lp said:
Hello! I've bought my S6 (SM-G920T) as carrier unlocked but when my pcb has burned due to factory fault and sent my phone to Samsung they gave me again it was locked. I'm from Argentina and I haven't T-Mobile sim to unlock with default application. I've called to my carrier in Argentina and they said me the IMEI it's unlocked but my phone still sais it's network blocked... Can anybody help me?
Click to expand...
Click to collapse
Have you tried with the tmobile device unloced app.? If that doesnt work then head over to this awesome guy, he can help you unlock it remotely. https://forum.xda-developers.com/tmobile-galaxy-s6/general/sim-unlock-honestly-free-t3601740
Hi guys, I have been reading for days but can't seem to find a concise guide. I am trying to use a Metro PCS SIM card in a locked TMobile S6.
I have installed twrp and root through Odin, but I can't manage to download the G920T1 firmware anywhere without it failing and forcing me to pay. I have tried sammobile and others.
After I flash the G920t1 firmware will his metro SIM card just work or do I then have to do a SIM unlock as well? Do I use a TMobile or MetroPCS unlock code if I need to SIM unlock?
Also does anyone know of a ROM that will allow me to use his Metro SIM without any of the above nonsense? I downloaded a ROM but I only have my Verizon SIM to test and it asked for an unlock code.
Any help is appreciated. Thanks in advance!
EDIT: After checking Android file host I found a link to the latest G920t1 firmware. Downloading now in hopes this gets me one step closer. https://www.androidfilehost.com/?fid=24591000424951428
Well I got the Metro PCS software running fine and when following this guide on unlockbase it says I just need this TMobile/MetroPCS unlock code and to put in the new SIM card and it should work.
https://blog.unlockbase.com/unlock-samsung-galaxy-s6-tmobile-usa/
https://www.unlockbase.com/service.php?id=775
Will report back later this week after purchasing the unlock code and attempting to input it.
One other note is when booting to stock recovery it warms me of multi csc. Its my understanding that this interferes with OTA updates. Is there anyway to fix the multi csc so my friend can take the metro pcs OTA updates or will I have to manually update them for him each time a new one comes out?
LakesideWiseman said:
One other note is when booting to stock recovery it warms me of multi csc. Its my understanding that this interferes with OTA updates. Is there anyway to fix the multi csc so my friend can take the metro pcs OTA updates or will I have to manually update them for him each time a new one comes out?
Click to expand...
Click to collapse
Your best bet is leaving it on tmobile rom.. if it's unlocked it's unlocked the sim will work just fine... just because you're using a different sim doesn't mean you gotta change roms
Leave it on what the device actually is, and let the unlock code make anything work for you
The S6 development is pretty dead and you will only really find updates for ours first, and if it's an original Tmobile device.. keep it on that, it's unlocked to work with anything but you don't have to flash anything specific to it G920T Use tmobile stock rom, unlock it and move on and do your business.. install twrp, get root , maybe a custom kernel and or rom?
If you root and leave stock recovery you're gonna have deep sleep issues, there hasn't been any MAJOR updates in awhile and it's only gonna go slower and slower with our device getting replaced by S7's and Note 7's
Roms will be updated to newer firmware bases, and JUST the bootloader and modem files will be online to quick flash within 2 minutes in odin to be updated then flash a updated rom base to the newer firmware if any future releases come.
Don't know too much about CSC sorry about that, but hopefully I at least get you on the right track?
The phone is locked. TMobile has the SIM unlock from the dialer disabled on the s6 firmware. You have to go through them to get it unlocked which my friend is currently unable to do, due to issues with payment on his account. I checked his imei and it says it's all good so I assume a traditional SIM unlock using the Metro pcs software should work.
I wasn't going to root or install twrp as this friend has no need for either and is fine staying on the stock software.