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Question Can I flash SM-G9980 with SM-G998B firmware?

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fa1rid

Member
May 31, 2021
13
0
Can I flash SM-G9980 (Taiwan BRI) with SM-G998B firmware (any region/csc) or it must be from same model?

Also my model in the network mode doesn't show:
2G Only
3G Only
etc...

it shows only:
3G/2G (auto connect)
4G/3G/2G (auto connect)
etc...

In other words I would like to force network mode to 2G only which I saw available only in the SM-G998B

Thanks!
 

mishufac

Senior Member
Nov 28, 2008
152
24
Bucharest
Can I flash SM-G9980 (Taiwan BRI) with SM-G998B firmware (any region/csc) or it must be from same model?

Also my model in the network mode doesn't show:
2G Only
3G Only
etc...

it shows only:
3G/2G (auto connect)
4G/3G/2G (auto connect)
etc...

In other words I would like to force network mode to 2G only which I saw available only in the SM-G998B

Thanks!
No. One is Snapdragon G9980 and other is Exynos G998B
 
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H4T3M4CH1N3

Senior Member
May 13, 2015
83
25
Santiago
Mine has the ability to select 2G only. I suggest you try changing CSC to TGY.

Screenshot_20210602-015622_Call settings.png
 

fa1rid

Member
May 31, 2021
13
0
Oh that's interesting guys. I will change my CSC to TGY then. I can do that by flashing the TGY firmware using Odin right?
Does using the HOME_CSC changes the CSC or I need to wipe all the data?
And after that OTA will work fine?
Thanks!
 

fa1rid

Member
May 31, 2021
13
0
So can I use Odin to flash a new firmware to change the CSC? I want to change from (Taiwan BRI) to (TGY Hong Kong). Please advise, do I need to wipe all data on phone?
 

fa1rid

Member
May 31, 2021
13
0
I tried to flash the TGY using the HOME_CSC and Odin showed pass and then device rebooted, but nothing changed. It's still showing BRI.
 

SoIomon

Member
Jun 11, 2021
48
3
you first need to backup your device using Team Win Recovery Project (TWRP).
TWRP.png


after backing it up, go to install and try flashing the firmware.
 

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    Can I flash SM-G9980 (Taiwan BRI) with SM-G998B firmware (any region/csc) or it must be from same model?

    Also my model in the network mode doesn't show:
    2G Only
    3G Only
    etc...

    it shows only:
    3G/2G (auto connect)
    4G/3G/2G (auto connect)
    etc...

    In other words I would like to force network mode to 2G only which I saw available only in the SM-G998B

    Thanks!
    No. One is Snapdragon G9980 and other is Exynos G998B
    1
    You can use my app Samsung Band Selection to force those options. Click on "more network settings", "advanced", and then "preferred network type"