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

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By tangcla, Senior Member on 22nd August 2016, 11:39 PM
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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?
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23rd August 2016, 08:27 AM |#2  
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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.
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23rd August 2016, 11:58 AM |#3  
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Quote:
Originally Posted by Eurofighter_ty

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?

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23rd August 2016, 12:06 PM |#4  
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Yes. In the CSC slot you put the HOME_CSC file

Sent from my SM-G930F using Tapatalk
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24th August 2016, 04:43 AM |#5  
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Quote:
Originally Posted by Eurofighter_ty

Yes. In the CSC slot you put the HOME_CSC file

And if the CSC is the same, I can just omit this file?
24th August 2016, 07:25 PM |#6  
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Quote:
Originally Posted by tangcla

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)
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24th April 2017, 09:54 PM |#7  
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Question Re-partition?
Do I have to enable the "RE-PARTITION" option in ODIN when changing CSC?

Quote:
Originally Posted by henklbr

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)

24th April 2017, 10:00 PM |#8  
Quote:
Originally Posted by eldavid39

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

Hi mate

It is recommended , changing to a total different CSC may need a change in partition size...

For more info read here

https://www.sammobile.com/forum/showthread.php?t=30800
24th April 2017, 11:41 PM |#9  
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Mix and match?
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

Quote:
Originally Posted by MAX 404

Hi mate

It is recommended , changing to a total different CSC may need a change in partition size...

For more info read here

25th April 2017, 01:27 PM |#10  
Quote:
Originally Posted by eldavid39

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
22nd July 2017, 07:59 PM |#11  
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