How to downgrade from android 11 one ui 3.1 to android 10 one ui 2.5 on m31s .

[Light001]

Can you please tell whether or not the emergency software recovery option in samsung smart switch will install the stock firmware(one ui 2.5) instead of the lastest version that is available for my device galaxy m31s(that is one ui 3.1).

also please tell me a way around this error that i am getting upon flashing this android 10 one ui 2.5 rom https://samfw.com/firmware/SM-M317F/INS/M317FXXU2BTK1 on my device with baseband version M317FXXU3CUL1. i think it's an issue with the binary version(U2) that i am trying to flash upon which is U3. 

is there any way to downgrade from android 11 to android 10 with one ui 2.5? 

thank you

[WalkieTechie]

Why do you want to downgrade to 10??

[Light001]

Because i don't like the grey background in the app drawer and i used to like the alarm alert's purple theme which is missing in this version. Also the dark mode was much better in the previous version. I have tried applying various themes but that doesn't change it.So for all the mentioned reasons i want to downgrade to android 10 one ui v2.5.

Can you tell me a way to do it? Thanks.

[WalkieTechie]

https://youtu.be/JkHY9ZvjqnA

Follow the steps in this video. This is for downgrading S21 to One UI 3. But the process is similar so use it to downgrading M31s to One UI 2.5

[Light001]

With reference to the mentioned video, please find the attached screenshot from the website samfw.com . There is a clear difference of binary(bit) between what is currently flashed upon my device(3) in comparison to the firmware that i am trying to flash(2). So this solution is not working. Could you provide me another solution?

Thank you.

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We acknowledge your query and apologize for the same. We would request you to register your concern in Samsung Members Application. So, our concern team gets back to you as soon as possible.

Please follow this path to register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Note. please attach the error log file within 15 minutes of the error occurring.

Thank you for writing to Samsung.

Warm Regards, 
Samsung Customer Support    

[Lokendra28]

All types of volumes are very low after software updates