[GUIDE] How To Install TWRP & Root Galaxy S8 After Oreo Update

Giansi

Senior Member
Feb 26, 2013
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389
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Somewhere in the centre of Italy
yes: Hold "Volume down"+Power until your device goes black / reboot.
As fast as you can: now press and hold "Volume up"+Bixby+Power.
Device should boot into twrp and will be able to install it permanently.
If you are not fast enough, you will have to repeat the whole process, because twrp doesn't become permanent unless you boot directly into it.
At least that's what I understood. I'm not very experienced :)
Thanks so much ! I did it with an additional help: in Odin I unchecked the "autoreboot" option, so at the end of recovery flash, yuu can decide when to reboot, ready to quicky override the system reboot pushing the recovery boot combo!

Now I have a stock Oreo 8 rooted S8+ !!!

This device was a present, I have a OnePlus 5 too. Can you please suggest me a custom ROM to flash? I like Lineage / AOSP with a lot of cutomisation. I don't need Oreo, Nougat is ok if stable.

Thanks again!
 

Giansi

Senior Member
Feb 26, 2013
543
389
0
Somewhere in the centre of Italy
Well in the reality i have a working system but in TWRP i cannot mount data, it says 0 mb, and the backups fail.

I did format data then flashed dmverity and magisk like indicated in OP.

Reading the entire thread, I'm not sure about this:

1) is possible to fix data not mounting in TWRP doing another format data? Or is not sure that this will work?

2) is this a twrp related issue so better to stay like this and wait for another twrp update?
 

Bofahad

Senior Member
Nov 14, 2013
431
70
58
Well in the reality i have a working system but in TWRP i cannot mount data, it says 0 mb, and the backups fail.

I did format data then flashed dmverity and magisk like indicated in OP.

Reading the entire thread, I'm not sure about this:

1) is possible to fix data not mounting in TWRP doing another format data? Or is not sure that this will work?

2) is this a twrp related issue so better to stay like this and wait for another twrp update?
i said i backed to nougat because of TWRP Dosnt support Oero but you did not read that

Sent from my Samsung Galaxy S8 using XDA Labs
 

Bofahad

Senior Member
Nov 14, 2013
431
70
58
Yes I read so for the reason i can stay with this working state until we have a Oreo TWRP, i was just asking:

There's no way this TWRP will work fine on Oreo right?

Its unuseful to try again format data correct?
Try it

Sent from my Samsung Galaxy S8 using XDA Labs
 
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Giansi

Senior Member
Feb 26, 2013
543
389
0
Somewhere in the centre of Italy
No way even when you try to restore nougat backups it will fail So you can stay on Oreo until TWRP support it & i think that will take a time or you can flash nougat then restore your TWRP nougat backups
I don't have any Nougat backup cause i got this device as a present 2 days ago. It i would like to downgrade to N and have a fully working twrp.

Can you please point me in the right direction to go back to Nougat?
 

Bofahad

Senior Member
Nov 14, 2013
431
70
58
I don't have any Nougat backup cause i got this device as a present 2 days ago. It i would like to downgrade to N and have a fully working twrp.

Can you please point me in the right direction to go back to Nougat?
Simply flash your right rom with Odin .

Sent from my Samsung Galaxy S8 using XDA Labs
 

master64nl

Senior Member
Jun 29, 2012
378
34
58
Amsterdam
Please help me out. I do not get it why I have this problem?
I made a full back-up with Android 7.0.
I go in download mode and flashed original stock rom 8.0 with latest odin 3.13.1.
Phone is now stock 8.0.
Go in download mode en flash twrp-3.2.1-0-dreamlte.img with latest odin 3.13.1.
I am in TWRP and format data.
Reboot in recovery and flash no-verity-opt-encrypt-6.0.
Reboot in recovery and flash Magisk-v16.0(1600).
Reboot in recovery and go to recovery and select only data from my latest back-up.
Recovery is finished and I reboot system.
Now my phone is working like it was with all my apps.
But now I can not make a back-up and can not make a recovery from my latest back-up.
So, I am stuck right now. The message I get in TWRP is not mounting data and data/media.
The order I am used to is not working I believe.
Whom can help me out here?
 

Bofahad

Senior Member
Nov 14, 2013
431
70
58
Please help me out. I do not get it why I have this problem?
I made a full back-up with Android 7.0.
I go in download mode and flashed original stock rom 8.0 with latest odin 3.13.1.
Phone is now stock 8.0.
Go in download mode en flash twrp-3.2.1-0-dreamlte.img with latest odin 3.13.1.
I am in TWRP and format data.
Reboot in recovery and flash no-verity-opt-encrypt-6.0.
Reboot in recovery and flash Magisk-v16.0(1600).
Reboot in recovery and go to recovery and select only data from my latest back-up.
Recovery is finished and I reboot system.
Now my phone is working like it was with all my apps.
But now I can not make a back-up and can not make a recovery from my latest back-up.
So, I am stuck right now. The message I get in TWRP is not mounting data and data/media.
The order I am used to is not working I believe.
Whom can help me out here?
OMG Guys i said that why you did't read !!

Sent from my Samsung Galaxy S8 using XDA Labs
 

master64nl

Senior Member
Jun 29, 2012
378
34
58
Amsterdam
Anyway I quit for now. Too much problems. I ga back to 7.0

---------- Post added at 14:24 ---------- Previous post was at 14:08 ----------

Anyway I quit for now. Too much problems. I ga back to 7.0
I tried but now I have the same problems. oeps!

Finally, I am backing up now to my latest backup 7.0 without messages in red can not mount data. pfffffff
 
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vuoshino

Senior Member
Sep 27, 2009
460
46
0
roma
now i can reboot in twrp without any problem but i want to know if is possible now to flash some costum rom because i see that is impossible to mount the system memory :(
 

Bofahad

Senior Member
Nov 14, 2013
431
70
58
now i can reboot in twrp without any problem but i want to know if is possible now to flash some costum rom because i see that is impossible to mount the system memory :(
If you want to flash custom rom why you did't stay with nougat and working TWRP????

Sent from my Samsung Galaxy S8 using XDA Labs