Firmware files - what are the AP, BL, files for?

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tangcla

Senior Member
Sep 10, 2008
2,467
347
Melbourne, Australia
www.tangcla.com
If you flash CSC will wipe your data. If you flash CSC_HOME will not wipe your data.

AP: is your system partition with recovery and stuff.
BL: your bootloader
CP: your modem
CSC: this is what features you get in some countries or carriers like Wi-Fi Calling.
Thanks for that. So can I flash the CSC file under CSC_HOME?

Sent from my SM-G930F using Tapatalk
 

henklbr

Senior Member
Feb 20, 2009
6,126
6,736
Netherlands
www.sammobile.com
And if the CSC is the same, I can just omit this file?

No, you must always flash the 4 files!

If your CSC is XSA:

AP, BL, CP & HOME_CSC_XSA

Then your data will stay intact!

Note: this can only be done if you stay at the same CSC; if you want to change your CSC for any reason, you need to flash CSC-file of the new country/region (that will reset your device)
 
Re-partition?

Do I have to enable the "RE-PARTITION" option in ODIN when changing CSC?

No, you must always flash the 4 files!

If your CSC is XSA:

AP, BL, CP & HOME_CSC_XSA

Then your data will stay intact!

Note: this can only be done if you stay at the same CSC; if you want to change your CSC for any reason, you need to flash CSC-file of the new country/region (that will reset your device)
 
Just wondering, could it be possible to mix and match?
Example: Flash the AP of T-Mobile and the CP of AT&T? To avoid incompatible band problems

Hi

For what I understand all USA ( Snapdragon) versions are compatible , so that would possible BUT to be sure you should ask in the right forum , this is for the international version Exynos
 

partcyborg

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Jun 23, 2017
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Before typing "setsid su<enter>?, type the following: "alias a='exit'<enter>" and THEN type "setsid su<enter>".

IF you do this, you can exit root shell by just "a<enter>", which is cake easy to do.
 

*Detection*

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BRAVE.DANDY

New member
Mar 24, 2018
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BL FAILED

If you flash CSC will wipe your data. If you flash CSC_HOME will not wipe your data.

AP: is your system partition with recovery and stuff.
BL: your bootloader
CP: your modem
CSC: this is what features you get in some countries or carriers like Wi-Fi Calling.


Hi

When i try to flash all 4 files together, ODIN fails, i unchecked BL and the flash passed, the phone working fine but i have a serious problem, my phone is French and i flashed Argentina region, now i lost IMEI and Baseband, please help. My phone is ( SM-G930F)

Note: 1. the S/N and IMEI is written on the box
2. I don't know anything about my previous CSC code and i have no idea which firmware was actually my original one.
 

Cholek3

Senior Member
Aug 11, 2010
568
108
Sheffield, UK
Hi

When i try to flash all 4 files together, ODIN fails, i unchecked BL and the flash passed, the phone working fine but i have a serious problem, my phone is French and i flashed Argentina region, now i lost IMEI and Baseband, please help. My phone is ( SM-G930F)

Note: 1. the S/N and IMEI is written on the box
2. I don't know anything about my previous CSC code and i have no idea which firmware was actually my original one.
Download XEF firmware for your phone, and flash all 4 files (BL, CP, AP and CSC). It should go back to normal state.
 

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  • 13
    If you flash CSC will wipe your data. If you flash CSC_HOME will not wipe your data.

    AP: is your system partition with recovery and stuff.
    BL: your bootloader
    CP: your modem
    CSC: this is what features you get in some countries or carriers like Wi-Fi Calling.
    3
    And if the CSC is the same, I can just omit this file?

    No, you must always flash the 4 files!

    If your CSC is XSA:

    AP, BL, CP & HOME_CSC_XSA

    Then your data will stay intact!

    Note: this can only be done if you stay at the same CSC; if you want to change your CSC for any reason, you need to flash CSC-file of the new country/region (that will reset your device)
    2
    So I downloaded the latest XSA update which came out yesterday on SamMobile, and flashed all four files - only to find that my phone had been wiped, including my /data partition :'(
    So my question is - what are the four categories of files to flash in Odin (AP, BL, CSC, HOME)? And which one is responsible for me losing my data?
    2
    Hi

    When i try to flash all 4 files together, ODIN fails, i unchecked BL and the flash passed, the phone working fine but i have a serious problem, my phone is French and i flashed Argentina region, now i lost IMEI and Baseband, please help. My phone is ( SM-G930F)

    Note: 1. the S/N and IMEI is written on the box
    2. I don't know anything about my previous CSC code and i have no idea which firmware was actually my original one.
    Download XEF firmware for your phone, and flash all 4 files (BL, CP, AP and CSC). It should go back to normal state.
    1
    Yes. In the CSC slot you put the HOME_CSC file

    Sent from my SM-G930F using Tapatalk