Hey,
I flashed the XAC firmware on my T-Mobile G950U and the ACC in recovery has changed to XAC.
Even after multiple attempts of flashing the tmobile firmware, it still remains at XAC.
My about phone shows XAA/XAA/TMB.
I even used smart switch emergency firmware initialization but it still shows XAC as CSC. The firmware itself is also slightly different with different LTE status bar icons and the language selection was different.
I'm just wondering how I can return to 100% stock tmobile.
Well you should have installed Twrp and done a back up of your stock so you could return to it.
https://www.sammobile.com/firmwares/galaxy-s8/SM-G950U/TMB/download/G950USQU1AQDE/130151/
Anyway here is T-Mobile. Weather or not you'll get ACC back we will never know. You will never get 100% stock out of the box again dude.
Related
i all to everyone don't know if this is correct in putting this post here . I have a Samsung galaxy s4 i9505 locked to ee tried a ×#0011#. And tried the long number to enter service mode. I can change it to 1. But I don't get the other menu to pop up. I've had an idea. I have tried looking for this method and I'm 50/50 weather it will work or not. As this as phone has got ee branded phone. If I installed a custom firmware btu version black edition . What the chances of unlocking it via the method above or would this phone still know in it a ee phone what are your thoughts regards James. I don't want to root the phone. I'm quite happy to put a btu black edition on the phone . I have used odin in the past on my old i9505 but that phone was already unlocked
Changing firmware will not unlock the phone. To get the proper menu to appear you have to downgrade the modem (or firmware) to Android 4.2.2, then use the service menu. If the service menu does not work, your only other alternative is to root while the modem is downgraded and run RegionLock Away.
Strephon Alkhalikoi said:
Changing firmware will not unlock the phone. To get the proper menu to appear you have to downgrade the modem (or firmware) to Android 4.2.2, then use the service menu. If the service menu does not work, your only other alternative is to root while the modem is downgraded and run RegionLock Away.
Click to expand...
Click to collapse
Many thanks for your reply. So if I down grade my firmware to 4.2.2 btu so I can enter the service menu . Are you saying this mite work 50/50
I did the downgrade myself when I lost my SIM unlock. The service menu worked but I messed up somewhere and failed to unlock. RegionLock Away worked perfectly.
Access menu
diesalweasel said:
i all to everyone don't know if this is correct in putting this post here . I have a Samsung galaxy s4 i9505 locked to ee tried a ×#0011#. And tried the long number to enter service mode. I can change it to 1. But I don't get the other menu to pop up. I've had an idea. I have tried looking for this method and I'm 50/50 weather it will work or not. As this as phone has got ee branded phone. If I installed a custom firmware btu version black edition . What the chances of unlocking it via the method above or would this phone still know in it a ee phone what are your thoughts regards James. I don't want to root the phone. I'm quite happy to put a btu black edition on the phone . I have used odin in the past on my old i9505 but that phone was already unlocked
Click to expand...
Click to collapse
Dont know if this will help you but after *#0011# press back then key input and type Q0 instead of 1. wait a few seconds and should take you to the menu.
Hey guys, i was wondering if i can flash firmware from other carrier without bricking?
I bought my phone last year locked to carrier, and I unlocked it using doctorSIM service. Phone itself works fine, and as I'm not living in country that i bought my phone from originally, phone gives a message "No SIM card installed" sometimes once a week, sometimes several times a day and i need to remove SIM card or to restart phone to make SIM card work again.
Please note:
- SIM Card from my original carrier (from one that I bought my phone from) works PERFECTLY fine
- My other SIM card (that my phone constantly rejects) works in other phones just fine
- I have tried to reset the phone, and carrier bloatware constantly keeps installing
- EDIT: Wi-Fi and 4G are working PERFECTLY fine
What to do? Any ideas?
Thanks in advance and sorry for gramar mistakes
Bump, flashed other carrier firmware, still same problem.
R u rooted? Have you considered flashing a CSC packet for your location?
I have a 930S, and works fine with the Korean ROM/Chinese language here in the US, on ATT service.
I have flashed the ATT, XAA and TMB CSC sets, and though the phone worked, and loaded the correct USA carrier info, I lost the phone code ability, which I could not solve.
In the end I went back to the original Korean ROM and it's CSC packet. Interestingly, though it works perfectly here in the U.S., and I can use/input phone codes, it still shows Chinese cities for my 'Region", none of which I have selected. When I do a search for local towers, it locates and correctly identifies AT&T, T-Mobile, etc. I select ATT. The Chinese cities remain in the region selection, none selected.
Wait and see if someone knows if CSC (Exynos or US based CPU) are interchangeable. I used CSC packets from a universal ROM setup (non-USA).
JeffDC said:
R u rooted? Have you considered flashing a CSC packet for your location?
I have a 930S, and works fine with the Korean ROM/Chinese language here in the US, on ATT service.
I have flashed the ATT, XAA and TMB CSC sets, and though the phone worked, and loaded the correct USA carrier info, I lost the phone code ability, which I could not solve.
In the end I went back to the original Korean ROM and it's CSC packet. Interestingly, though it works perfectly here in the U.S., and I can use/input phone codes, it still shows Chinese cities for my 'Region", none of which I have selected. When I do a search for local towers, it locates and correctly identifies AT&T, T-Mobile, etc. I select ATT. The Chinese cities remain in the region selection, none selected.
Wait and see if someone knows if CSC (Exynos or US based CPU) are interchangeable. I used CSC packets from a universal ROM setup (non-USA).
Click to expand...
Click to collapse
I'm not rooted, as I use Samsung Pay and have more than one year of warranty left. I will try flashing CSC of the current country I'm in (Austria). Thanks for taking time and writing all this, this problem is unbearable
Hello!
My s7 edge is in trouble, it freezes sometimes, and sometimes it gets a full screen of pixel color flaws, with that problem my root smartphone works two weeks. Sometimes this error occurs in the ROM installation process, I insist on the installation until I can. I tried to install superman rom and due to this problem, the smartphone in the screen of death "exception of bootloader" (But it's already been resolved)...
When searching the internet, I saw that this could have a problem in flash memory.
After all history, I ask;
I could use a twrp file system repair function to try to solve this problem? And how to proceed?
(sorry for the use of google translate)
sekrilhus said:
Hello!
My s7 edge is in trouble, it freezes sometimes, and sometimes it gets a full screen of pixel color flaws, with that problem my root smartphone works two weeks. Sometimes this error occurs in the ROM installation process, I insist on the installation until I can. I tried to install superman rom and due to this problem, the smartphone in the screen of death "exception of bootloader" (But it's already been resolved)...
When searching the internet, I saw that this could have a problem in flash memory.
After all history, I ask;
I could use a twrp file system repair function to try to solve this problem? And how to proceed?
(sorry for the use of google translate)
Click to expand...
Click to collapse
I am, by far, not educated up on TWRP, so I'm not sure what you mean by "repair", other than making sure your data partition is formatted so it does not cause the issues you are talking about.
Here is an interesting read:
https://forum.xda-developers.com/go...o-repairing-corrupted-data-partition-t2577447
Hey guys, update on the problem, i replaced sim card and it works just fine, i will post updates as time goes on
Thanks for the help!
Somewhere over the years I apparently lost the carrier directory in /efs, as well as the CSC data - is there any way of getting this back? I'm hoping it's at least possible by flashing back to stock but only as a last resort - I've tried a bunch of different things without success so far.
The phone started as a Rogers N900W8 and was immediately unlocked and rooted. Sometime soon thereafter a Bell 4.3 firmware was flashed (via Heimdall). I then switched from Rogers to Wind (now Freedom) - I believe this is where the hidden menu disappeared if I remember correctly - and the phone functioned just fine through all of this.
I then moved from that Bell BMC 4.3 to the Wind GLW PG1 5.0 firmware (grabbed from sammobile and flashed via Odin) thinking that the presence of the Wind SIM would trigger the firmware to switch from BMC to GLW but it doesn't seem to have worked out like that. I'm now running the LineageOS nightlies and the phone works just fine except for a lack of LTE which is what I'd like to sort out with the secret codes. Also, since switching to Wind I believe my mobile network has always been displayed as HOME.
Samsung Phone Info doesn't list any CSCs except BMC under original. In the firmware tab, it's not listing PDA or CSC version. There is no carrier directory in /efs nor are there any CSC files in the file system. Entering almost any secret code fails "Connection problem or invalid MMI code" - *#06# will display IMEI but all others I've tried don't work.
UPDATE #1:
Have been able to get the Canadian CSCs onto the device and recognizable as being present by Phone Info.
Ripped out cache.img.ext4 from the PG1 firmware and used Cache Ripper (found on XDA somewhere) via Wine on linux to create a TWRP flashable zip. Had to mount system in TWRP before flashing.
Changing CSC with Phone Info apparently does a Factory Reset and not quite ready to do that yet as more research seems to point to reverting to stock for the hidden menu.
UPDATE #2:
Flashed stock PG1 via Odin. Went into a bootloop after building Dalvik on first boot and had to reboot into the stock recovery and wipe data and system, then it booted fine. The back button stopped working (LOL Samsung) and I had to flash a random 5.0 custom kernel (idlekernel) to get it back. Flashed TWRP and SuperSU.
There is now an empty carrier directory in root but there still isn't one in /efs. Lots of information on XDA pointing to this being a prerequisite for the secret codes - turns out it's all bunk.
Secret codes work. Had some difficulties with Phone Info not letting me into the root menus to change CSC - was spitting out output from some failed scripts - and when I was just about to give up it started working. Changed CSC to GLW which prompted another factory reset, and now it shows GLW / BMC as the active CSCs. APNs were Bell's originally, which is not what I wanted, but after following the *#272*IMEI directions from this thread and another factory reset they are now Wind's. No LTE yet. Would like to get rid of the BMC CSCs altogether since this was never a Bell device.
Some more stuff changed in Phone Info: Product Name is now hltevl, Firmware's CSC Code is now BMC and CSC Country is Canada/CA. PDA and CSC version has also been populated. CSC Changer still defaults to having BMC selected and I'm still getting the Bell bloatware.
UPDATE #3:
Active CSC reverted to BMC after a couple reboots...they're all BMC now.
Attaching (the initial) Samsung Phone Info screenshots (don't see how to edit them into OP via mobile app) .
I recommend to flash a stock firmware instead of this custom rom.
vndnguyen said:
I recommend to flash a stock firmware instead of this custom rom.
Click to expand...
Click to collapse
Thanks for stopping by.
I flashed the stock PG1 firmware for the GLW CSC. But the device still thinks it's BMC - this probably has something to do with all the Canadian devices sharing identical hardware and firmware.
Then I used your tool to change the CSC to GLW. All of the CSCs remained BMC except for Active CSC which was BMC/GLW. After a couple reboots even that was gone and Active CSC reverted to BMC.
Do I maybe need the stock recovery for the CSC changes to stick ? I flashed TWRP 3.1.1 for root.
perosredo said:
Thanks for stopping by.
I flashed the stock PG1 firmware for the GLW CSC. But the device still thinks it's BMC - this probably has something to do with all the Canadian devices sharing identical hardware and firmware.
Then I used your tool to change the CSC to GLW. All of the CSCs remained BMC except for Active CSC which was BMC/GLW. After a couple reboots even that was gone and Active CSC reverted to BMC.
Do I maybe need the stock recovery for the CSC changes to stick ? I flashed TWRP 3.1.1 for root.
Click to expand...
Click to collapse
So your problem is to get LTE back, or get rid of BMC?
vndnguyen said:
So your problem is to get LTE back, or get rid of BMC?
Click to expand...
Click to collapse
I'd like to do both if possible but I'm not going to sweat over the CSC if it's purely cosmetic - mainly concerned about the LTE.
I wouldn't be surprised if they are linked however since the carriers here operate LTE on different bands to the best of my knowledge.
So firstly try to install the stock BMC firmware to see if the LTE works?
Long story short, LTE isn't yet available in this location on this carrier on a Note3-supported band yet.
So that's that.
Currently on Snapdragon latest official Oreo with XAS (unbranded Sprint)
My phone was an originally Verizon branded, it now has XAS U1 firmware (model shows as U1 in settings)
I want to flash either U1 or U of ROM with csc of SPR. The reason I want to do this is because I want to fix/enable Calling Plus/Wi-fi settings.
I really do not care if my csc says XPR or SPR afterwards, I'm just thinking that flashing a rom designated as SPR might fix my Calling Plus/Wi-fi issues.
Is it possible when using Odin to flash, to use Home CSC and not wipe data.? I still feel with unrooted phone backup and restore still requires a lot of manual setup and I hate constantly doing this every time I flash.
Note: I've already tried to get wifi calling working using both Nova activities and in the phone settings without success , have been following the other thread about enabling Calling Plus on unbranded rom
After throwing in a T-Mobile sim and then going back to Sprint sim, I was converted to SPR csc. Sprint always seems to do this. So now I don't need to change CSC b ut I still am struggling to get wifi calling
The firmware for SPR and XAS appear to be identical so I am wondering if I should try to flash the U version of the rom . And of course attempting to keep data
FIXED?? - Getting back to AT&T stock from S8 Factory Binary (failed carrier change)
==== Latest update (I am not an expert but please check out (at your own risk) ============================
All - I installed latest Tmobile firmware for SM-G950U downloaded from sammobile (G950USQU5CRK1) using odin3v3.13.1.
To my pleasant surprise I find that Wifi Calling etc works fine. You need to have TMobile SIM in the phone when you flash the firmware. I believe S8 automatically customizes firmware based on sim detected (I tried AT&T/TMO sims and it did).
It is likely that all the carrier change guides are no longer relevant (at least as of V5 bootloader) I am not an expert but please check out (at your own risk)
========== OLD Thread =======================
Will appreciate help.
Here is what I did or wanted to do: I switched carriers from AT&T to TMobile and tried to install TMobile stock using these instructions
https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817
I have a V5 bootloader so I used Factory Binary from here https://forum.xda-developers.com/ga...bination-files-bit-5-g950uu1-g955uu1-t3816112
Current State: I am on factory binary, but the instructions to change carrier files (32-33 in carrier switching) don't seem to work for V5.
I would like to get back to AT&T stock - but cannot figure out how to. I cannot find AT&T stock firmware with V5 bootloader anywhere. ANy help / guidance is appreciated
Click to expand...
Click to collapse
cnewsgrp said:
==== Latest update (I am not an expert but please check out (at your own risk) ============================
All - I installed latest Tmobile firmware for SM-G950U downloaded from sammobile (G950USQU5CRK1) using odin3v3.13.1.
To my pleasant surprise I find that Wifi Calling etc works fine. You need to have TMobile SIM in the phone when you flash the firmware. I believe S8 automatically customizes firmware based on sim detected (I tried AT&T/TMO sims and it did).
It is likely that all the carrier change guides are no longer relevant (at least as of V5 bootloader) I am not an expert but please check out (at your own risk)
========== OLD Thread =======================
Click to expand...
Click to collapse
I have come to believe this as well. I was flashing the unlocked firmware on mine and if I kept my Xfinity wim in it it no matter what,would default back to my cct csc. So I tested and inserted other Sims flashed a CSC and auto configuration took over on boot and would reflash itself with the apropriate carrier CSC and sales codes...The auto configuration seems to handle most carrier changes. There is also a hidden menu where you can select a csc. And again. If I selected one if I had my sim in it would disregard and keep sims csc. If I removed it would take til I inserted my carriers sim.
Also at the bottom of this hidden menu you can select to disable auto configuration....
Don't know if this helps your hunting's and findings but it was observations I made
TheMadScientist said:
I have come to believe this as well. I was flashing the unlocked firmware on mine and if I kept my Xfinity wim in it it no matter what,would default back to my cct csc. So I tested and inserted other Sims flashed a CSC and auto configuration took over on boot and would reflash itself with the apropriate carrier CSC and sales codes...The auto configuration seems to handle most carrier changes. There is also a hidden menu where you can select a csc. And again. If I selected one if I had my sim in it would disregard and keep sims csc. If I removed it would take til I inserted my carriers sim.
Also at the bottom of this hidden menu you can select to disable auto configuration....
Don't know if this helps your hunting's and findings but it was observations I made
Click to expand...
Click to collapse
Thanks