Help Galaxy M31 Help with applying a rom

[einekratzekatze]

I wanted to root (and apply a rom on) my Galaxy M31 but either the few tutorials out there confused me or I coudnt find anyone to help with my questions. So I hope i can find some answers here.
Its a phone from the eu and i can unlock the bootloader in the dev settings

1. I heared I should apply a rom first and after that root my phone. Is that correct? (cause i think so ill skip questions for rooting)
2. There is only a LineageOS version for Android 10 is that a problem? (or is there maybe another OS that has Android 11 Support for my device)
3. How do I backup my device and what can not be.
4. And how do I apply the rom and root it?

 

[ocnbrze]

I wanted to root (and apply a rom on) my Galaxy M31 but either the few tutorials out there confused me or I coudnt find anyone to help with my questions. So I hope i can find some answers here.
Its a phone from the eu and i can unlock the bootloader in the dev settings

1. I heared I should apply a rom first and after that root my phone. Is that correct? (cause i think so ill skip questions for rooting)
2. There is only a LineageOS version for Android 10 is that a problem? (or is there maybe another OS that has Android 11 Support for my device)
3. How do I backup my device and what can not be.
4. And how do I apply the rom and root it?

1. nope you need to flash recovery first, root, make a nandroid backup(twrp), wipe, and then flash a custom rom
2. are you looking for android 11? you can flash anything does not matter what android os the rom is based off as long as it was made specifically for your phone.
3. you will need twrp recovery to make nandroid backups. we will talk about that once you have it installed.
4. here is the guide to get you twrp and root the phone:
https://forum.xda-developers.com/t/...l-samsung-m31-flash-twrp-permanently.4187991/

 

[einekratzekatze]

TYVM
2. I want a privacy focused rom with as much features as possible. But I couldn't find LineageOS 18 for my phone (just 17).
Is there any rom that is better than LineageOS 17 for my phone?
Ill follow the guide for now

 

[einekratzekatze]

And sadly the 2 files linked on the guide do not exist. how do i get them?
Found this comment can I use these files? https://forum.xda-developers.com/t/...-flash-twrp-permanently.4187991/post-84151199
I just realiesed i didnt unlock my bootloader. but ive read it deletes all files. so I need to backup my data but to do that i need to root my device but i have to unlock bootloader to flash twrp which will delete all my files so i need to backup my data...
Do i miss something?

 

[einekratzekatze]

1. nope you need to flash recovery first, root, make a nandroid backup(twrp), wipe, and then flash a custom rom
2. are you looking for android 11? you can flash anything does not matter what android os the rom is based off as long as it was made specifically for your phone.
3. you will need twrp recovery to make nandroid backups. we will talk about that once you have it installed.
4. here is the guide to get you twrp and root the phone:
https://forum.xda-developers.com/t/...l-samsung-m31-flash-twrp-permanently.4187991/

Do I have to reply directly so you get a notification or were you just offline?

 

[ocnbrze]

And sadly the 2 files linked on the guide do not exist. how do i get them?
Found this comment can I use these files? https://forum.xda-developers.com/t/...-flash-twrp-permanently.4187991/post-84151199
I just realiesed i didnt unlock my bootloader. but ive read it deletes all files. so I need to backup my data but to do that i need to root my device but i have to unlock bootloader to flash twrp which will delete all my files so i need to backup my data...
Do i miss something?

Do I have to reply directly so you get a notification or were you just offline?

sorry i was in and out of the office so i did not have access to a computer until i got home. you have to read the thread. the answers to your question is in the thread. but i have the answers for you as far as the files go:

vbmeta:https://forum.xda-developers.com/t/...twrp-permanently.4187991/page-2#post-84151199
twrp:https://gofile.io/d/sf8xuv

flashing twrp will not delete data. you can backup most of your app data thru smart switch so do not worry about data to much. also keep in mind that smart switch will not backup text. look up samsung smart switch to see what is backed up.

also unlocking the bootloader will not erase data. all you are doing is going into dev mode and enabling oem bootloader unlock. flashing twrp will not delete data.

 

[einekratzekatze]

sorry i was in and out of the office so i did not have access to a computer until i got home. you have to read the thread. the answers to your question is in the thread. but i have the answers for you as far as the files go:

vbmeta:https://forum.xda-developers.com/t/...twrp-permanently.4187991/page-2#post-84151199
twrp:https://gofile.io/d/sf8xuv

flashing twrp will not delete data. you can backup most of your app data thru smart switch so do not worry about data to much. also keep in mind that smart switch will not backup text. look up samsung smart switch to see what is backed up.

also unlocking the bootloader will not erase data. all you are doing is going into dev mode and enabling oem bootloader unlock. flashing twrp will not delete data.

I get this when I try to flash the vbmeta from the link

My Phone tells me it got blocked by oem lock or just reboots into "stock"

 

[ocnbrze]

I get this when I try to flash the vbmeta from the link
View attachment 158415
My Phone tells me it got blocked by oem lock or just reboots into "stock"

did you go into developers mode and enable oem unlock?

 

[einekratzekatze]

did you go into developers mode and enable oem unlock?

Looks fine right?

 

[einekratzekatze]

sorry i was in and out of the office so i did not have access to a computer until i got home. you have to read the thread. the answers to your question is in the thread. but i have the answers for you as far as the files go:

vbmeta:https://forum.xda-developers.com/t/...twrp-permanently.4187991/page-2#post-84151199
twrp:https://gofile.io/d/sf8xuv

flashing twrp will not delete data. you can backup most of your app data thru smart switch so do not worry about data to much. also keep in mind that smart switch will not backup text. look up samsung smart switch to see what is backed up.

also unlocking the bootloader will not erase data. all you are doing is going into dev mode and enabling oem bootloader unlock. flashing twrp will not delete data.

from what i have heared you need to unlock the bootloader not just allow it in the dev settings?
but that would wipe my data. so i would need to back it up and then unlock it.
Backing up now with smart switch, could unlock it now

 

[ocnbrze]

from what i have heared you need to unlock the bootloader not just allow it in the dev settings?
but that would wipe my data. so i would need to back it up and then unlock it.
Backing up now with smart switch, could unlock it now

yes you are right......adb fastboot oem unlock bootloader does wipe data.....forgot about that.

 

[einekratzekatze]

I found someone on Discord who guided me trough it. Can I close the thread somehow?

 

[ocnbrze]

I found someone on Discord who guided me trough it. Can I close the thread somehow?

nice!!!!!!!!

care to share the info?

only mods can lock up a thread....but i say leave it open in case someone else stumbles upon this thread. plus i really would like to know what you did.