Using a different CSC file to an original ROM - Galaxy S6 Q&A, Help & Troubleshooting

Hi
I want to update my SM-G920i to the latest ROM recently issued for some South American countries.
I have an Australian version and its latest ROM was FRD4 with security patch to March 2018. Whereas the latest Uruguayan ROM is FRF4 with security patch to August 2018.
But I want to retain my Australian customisation including the ability to use Samsung Pay with local banks.
I'm looking at the possibility of mixing the latest South American {say the Uruguay (Claro) version} AP, BL, and CP files with an Australian (say Australian XSA) CSC or HOME_CSC file.
Is this possible, particularly without tripping Knox?
I've searched the XDA forums and Google, and only fountd that it was okay for earlier Samsung Galaxys.
Grateful for any advice

Respectful bump ?

Yes - you can mix AP, BL, and CP files with a different CSC!
I have been able to answer my own question!
In short - YES - You can mix AP, BL, and CP files with a different CSC. At least for the SM-G920I version of the S6.
A non-carrier provisioned version of Galaxy S6 in Australia uses XSA firmware.
Samsung last update the XSA version with G920IDVU4FRD3 firmware with a build date of 19 April 2018 and Security Patch Level: 01 March 2018.
The most recent and possibly last S6 firmware is provided for Uruguay (Caro) {CTU} and is called G920IDVU4FRG1 dated 24 July 2018 with Security Patch Level: 01 August 2018.
That's 3 build versions and 5 monthly security patch levels ahead of the latest XSA firmware!
I have a spare S6 with a smashed screen so I have no worries about experimenting.
I downloaded both versions from IMEI.info. I used this website because it provides separate AP, BL, CP and CSC files.
Using Odin v 3.12.3, I loaded the CTU AP, BL, and CP files and the XSA CSC file, crossed my fingers, and 'Start'.
The update ran without a hitch.
I now have an XSA-branded S6 with latest firmware and security patches.
Knox has not tripped, Samsung Pay comes up without any warning, and VoLTE and VoWifi work fine (using Aldimobile over the Telstra network).
I'm very happy because this gives a new lease of life on my primary S6.

Related

My XFV came with XSG firmware from AMAZON!! Im not getting OTA

As the title says, i bought an g930f from amazon and it is an XFV (south africa vodafone i think) version.
The phone works like charm and it is unlocked, but it came with XSG firmware.
I guess some along the line flashed XSG on my phone, but the problem is im not any getting OTAs! im stuck on february security update.
How can a solve this? Can a flash any exynos firmware on my phone? Does it have to contain my current CSC, the original one? How do i do to flash a firmware in ODIN and be able to get OTA later on?
Thnks!!!
Yes that should be ok. I reflashed my carrier branded s7 (new CSC) and I get OTA updates for the new firmware

Firmware change - double-check please?

Hi all,
I'm back to Samsung after a number of years away at HTC and LG! Last Samsung was an S2 and so I've used Odin, reflashed firmwares, rooted etc. before so know my way around this stuff in a general sense.
I got an S7 from CEX recently to replace my broken LG G3 but the firmware on it seems to be a slightly older / foreign one and I want to get onto a clean UK / EU firmware, so I can keep stem with OTAs that I see friends' S7's receiving. My current firmware is baseband G930FXXU1BPJE, build number G930FXXU1ZPK4.
I've looked on SAMMobile and can see two options for UK unbranded; XEU and BTU. So my first question is what one should I use and what the difference is?
Secondly, when I use Odin to flash whichever one is correct, will I need to repartition? Or will factory resetting after flash be enough to properly correct the CSC?
Finally, will this still show up as an 'untampered' phone, and receive OTA correctly?
Thanks for the help.
XEU has the most updated firmware atm with a February security patch, where BTU is still on January afaik, both unbranded UK firmwares
If you flash them using CSC (Not HOME_CSC) which will reset the phone and change CSC, then you will remain KNOX 0x0 and receive OTAs for whichever CSC you choose, XEU or BTU
No need to repartition
I did read something about needing to flash to another CSC supported by the current CSC on your phone atm (Multi CSC) before flashing to the one you want to change to, but not sure about that, I've only ever switched between BTU and XEU, and BTU is multi CSC containing XEU too
*Detection* said:
XEU has the most updated firmware atm with a February security patch, where BTU is still on January afaik, both unbranded UK firmwares
If you flash them using CSC (Not HOME_CSC) which will reset the phone and change CSC, then you will remain KNOX 0x0 and receive OTAs for whichever CSC you choose, XEU or BTU
No need to repartition
I did read something about needing to flash to another CSC supported by the current CSC on your phone atm (Multi CSC) before flashing to the one you want to change to, but not sure about that, I've only ever switched between BTU and XEU, and BTU is multi CSC containing XEU too
Click to expand...
Click to collapse
Thanks, I'll stay alert to that possibility. I'll go with the XEU variant and hopefully be ok. Just need to backup my stuff first.
gyaku_zuki said:
Thanks, I'll stay alert to that possibility. I'll go with the XEU variant and hopefully be ok. Just need to backup my stuff first.
Click to expand...
Click to collapse
Hello, did you have any luck changing your CSC without Re-Partitioning ?
Im in the same situation right now (DDE CSC, still on 6.0.1) and I am kinda scared after reading so many posts where people bricked their phones.

//G950U\\ AT&T S8 Stock G950USQU2CRC5 Odin Files

AT&T Stock S8 G950USQU2CRC5 Odin Files
Model: SM-G950U
Model Name: Galaxy S8
Country: (USA)
Version: Android 8.0 Oreo
Security Patch Level: March 1st, 2018
Product Code: ATT
PDA: G950USQU2CRC5
CSC: G950UOYN2CRC5
Download here: G950USQU2CRC5
DOWNLOAD for ODIN:
ODIN v3.13.1
Click Here For S8+
My wife has a S8 unlocked SM-950U I followed the carrier switching instructions here https://forum.xda-developers.com/galaxy-s8/how-to/snap-guide-flashing-standard-fw-carrier-t3625817 to load ATT firmware in the hope of getting carrier features like wi-fi calling, video calling etc. to work. In sort none of those features work and now she is not getting any OTA updates and still on security patch level from july 2017
1. Can i flash this over the current firmware NRD90M.G950USQS1AQF7 service provider says ATT/ATT/XAA
2. Will it flash a non-carrier version or att branded version we have att sim?
3. will she get OTA updates after this?
4. will user data be erased?
Thank you in advance for your help.

Flashing new (for me), Samsung S7 questions.

Hi all, I just recieved my phone and it works fine, problem, I am a Tmobile subscriber and the phone is a SM-G930A Ver. 6.01 marshmallow. I can't update OTA and some other issues. I want to flash to Tmobile and have downloaded these files as well as Odin, phone in developer options correct, etc. Will this work? I am also concerned about KNOX, should I be? Thanks in advance, a newbie.
G930TUVU4BQB1 - GALAXY S7 SM-G930T TMB USA (T-MOBILE) extracted with winrar.
Model SM-G930T
Model name Galaxy S7
Country USA (TMOBILE) (TMB)
Version Android 7.0
Changelist 10376601
Build date Thu, 02 Feb 2017 10:45:04 +0000
Security Patch Level 2017-02-01
Product code TMB
PDA G930TUVU4BQB1
CSC G930TTMB4BQB1
KNOX only trips when you flash custom firmware, so if you've got the stock firmware files it shouldn't trip KNOX, just make sure you got them from a reliable source (simfirmtool, sammobile, updato etc)
You should have 4 or 5 files to flash with Odin, AP, CP, BL and CSC (or HOME_CSC, which doesn't wipe data, CSC does, choose one)
You can't flash an older Android version on Snapdragon devices but you can sidegrade or upgrade, but since you're flashing from 6 to 7 it shouldn't be an issue.

Question Flash firmware from other regions & Recieve OTA updates

Dears,
I have S908E 22 Ultra, but my country always get updates very late. So the question is if I flashed other country firmware without changing CSC , will I still get OTA updates ?
Yes you will get but those OTA updates will be from that other region only
Hi, I have S908E 22 Ultra, I want to flash the USA or SM-G9880 firmware (or any snapdragon firmware) is OK ?
Also I changed the CSC code but the last line (country of production not change) example: COO/COO/COO after change CSC: XID/XID/COO. It's possible to change the country of production CSC without root?
Can anyone help with the info if can do it or not, only the last CSC (country of production) other CSC I changed with SamFw FRP Tool but like I said I can change the last 3 letters!
Thank you!

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