Downgrade from Pie to Oreo

587.saboor

Senior Member
Jul 5, 2017
1,040
330
0
16
Edmonton
Did you flashed anything? Remember after ANY flash a hard reset via recovery is a MUST!!! And also do not Restore. Install your apps fresh from Play or via .apk.
lol im sure i didnt flash anything till like 2 weeks after i bought the phone and before that 2 weeks the battery length was still 12-15hrs
 

Dosde

Member
Feb 22, 2019
19
6
0
Root or not,only this file no root?

Hi guy's so i was able to downgrade from Pie ( One Ui ) to Oreo
( save your media on your sd card or your PC then you check if they are there )
1 - Go to TWRP or Recovery to wipe data

2- Download and unzip

https://drive.google.com/file/d/1FQKt_lWUxxbaZGk37r4tkEMO0Faaci-R/view
and
https://drive.google.com/file/d/1-0sJtCjGrlmS4z_dDO_FXozR1g8u-vm8/view?usp=sharing
Put RMM STATE BYPASSER AND VERITY IN A SD CARD

3- Open Odin and untick auto reboot

4-click start on Odin now it's fully flash and now press power + volume down button and after the screen turn off directly press Power + volume down and Up now you are in download mode and check if the auto reboot is unticked

5- Click on reset on Odin and now on AP put TWRP and click on start now press Power + volume down and after the screen turn off press Power + Volume Up and now you are on TWRP go on wipe and click on format data and now go back and go to install and click on up a level and got extsd and now you flash RMM state bypasser and after verity and now reboot now you are on oreo and you install magisk after first reboot.
If you need root(twrp) or not to Oreo, only these similar files are needed for s9 and s8
 

Youdoofus

Forum Moderator
Staff member
Feb 21, 2011
3,461
984
253
Sioux Falls, SD
Hi there, correct me if I'm wrong, but in latest Odin and newer devices (S7 and up I think) you don't use .tar file but 4 separate files : AP,BL,CSC and CL.
I updated my A8 via Odin, right after flash did hard reset and touch wood have no issues whatsoever. Knox is intact 0x0 and anything else in "original" state...
yes, in the newer ones you use the 4 separate files. old habit of saying tar.md5 since ive typed that keystroke about 900 times over my time modding the S3 and S5. I flashed my A8 within a few weeks of getting it in july '18 to oreo and it tripped my counter. Didnt root it, didnt flash twrp, just the OS update and it tripped my counter.

---------- Post added at 08:14 AM ---------- Previous post was at 07:59 AM ----------

Did you flashed anything? Remember after ANY flash a hard reset via recovery is a MUST!!! And also do not Restore. Install your apps fresh from Play or via .apk.
my Pie update was dirty flashed, but i used the home csc when flashing it and its perfectly fine. I havent factory reset it for several months for that matter

The first thing I do after boot is disable/delete Facebook and everything related to it. I think it's 2-3 more facecrap. That helps a lot.
Also the AOD is battery hog... I prefer the notification light.
i have facebook and full messenger installed on my phone and still get well over 24 hours of use. Gained maximum 10-15% when i switched AOD off
 

Rexton270

Senior Member
Jun 6, 2007
365
28
0
3rd rock from the sun
yes, in the newer ones you use the 4 separate files. old habit of saying tar.md5 since ive typed that keystroke about 900 times over my time modding the S3 and S5. I flashed my A8 within a few weeks of getting it in july '18 to oreo and it tripped my counter. Didnt root it, didnt flash twrp, just the OS update and it tripped my counter.

---------- Post added at 08:14 AM ---------- Previous post was at 07:59 AM ----------



my Pie update was dirty flashed, but i used the home csc when flashing it and its perfectly fine. I havent factory reset it for several months for that matter



i have facebook and full messenger installed on my phone and still get well over 24 hours of use. Gained maximum 10-15% when i switched AOD off
That strange that flashlight with Odin tripped the knox...:confused:
 

Youdoofus

Forum Moderator
Staff member
Feb 21, 2011
3,461
984
253
Sioux Falls, SD
That strange that flashlight with Odin tripped the knox...:confused:
meh. i didnt think much about it since one of the first things i did with all of my other galaxy devices is void the warranty anyways. besides, i have a UAE market device i bought on amazon that came without a warranty, so i didnt care if i voided it in the first place LoL
 

unknoww

Member
Oct 8, 2015
13
0
0
hi guys
I upgraded my phone to android 9 today but all my google apps stopped working!!
i cleared google play service data but still i have the problem
even when i'm going to setting/google the setting page not loading
please help!!!
 

DanielLegendaryJarl

New member
May 27, 2012
1
0
0
Hi, it did not work for me... I followed all your instructions to the letter, I was able to flash TWRP correctly and I got no fail messages when flashing RMM and verity via TWRP. However, when flashing stock OREO rom via Odin, I get the same FAIL message I was getting before the TWRP method, I even got the bootloader message in red as if I hadn't tried anything. I don't want this to be in vain because now I tripped the KNOX counter, but still got stuck to PIE.

Any ideas?
Thanks in advance...
 

Pro Cal

Senior Member
Aug 29, 2013
112
21
38
Hi, so basically just flash TWRP by odin >> and the wipe and format >> and install RMM
but where is the firmware file to flash then ? If Im on pie how can only TWRP and RMM get me back to orep
btw the files are no longer available, please re-upload
thanks
 

verytobyb

Member
Jan 7, 2019
6
0
0
Hi, it did not work for me... I followed all your instructions to the letter, I was able to flash TWRP correctly and I got no fail messages when flashing RMM and verity via TWRP. However, when flashing stock OREO rom via Odin, I get the same FAIL message I was getting before the TWRP method, I even got the bootloader message in red as if I hadn't tried anything. I don't want this to be in vain because now I tripped the KNOX counter, but still got stuck to PIE.

Any ideas?
Thanks in advance...
The same happens to me keep getting this FAIL message everytime. I read somewhere you have to download a firmware with the same binary but didn't find any for me. It's the first time I heard about the binaries and I've flashed before. Can somebody say step by step how they downgraded the software please?
 

verytobyb

Member
Jan 7, 2019
6
0
0
I was thinking. I have a 14 binary there isn't any Oreo with that one. I want to downgrade. Did somebody try to download a different pie version with the same binary of the Oreo version you want to download? Do you think this is possible?
 

MassiMo.Z78

Member
Sep 11, 2014
12
0
21
42
Pavia
Hi guy's so i was able to downgrade from Pie ( One Ui ) to Oreo
( save your media on your sd card or your PC then you check if they are there )
1 - Go to TWRP or Recovery to wipe data

2- Download and unzip

https://drive.google.com/file/d/1FQKt_lWUxxbaZGk37r4tkEMO0Faaci-R/view
and
https://drive.google.com/file/d/1-0sJtCjGrlmS4z_dDO_FXozR1g8u-vm8/view?usp=sharing
Put RMM STATE BYPASSER AND VERITY IN A SD CARD

3- Open Odin and untick auto reboot

4-click start on Odin now it's fully flash and now press power + volume down button and after the screen turn off directly press Power + volume down and Up now you are in download mode and check if the auto reboot is unticked

5- Click on reset on Odin and now on AP put TWRP and click on start now press Power + volume down and after the screen turn off press Power + Volume Up and now you are on TWRP go on wipe and click on format data and now go back and go to install and click on up a level and got extsd and now you flash RMM state bypasser and after verity and now reboot now you are on oreo and you install magisk after first reboot.
Hello (sorry for my english but it is translated by google)
your procedure is not clear as you haven't even mentioned the Downgrade.zip file, however I currently have a Galaxy a8 SM-A530F with an android 9 version (A530FXXSECTJ1) and I would like to revert to the android 8 version (A530FOXM3BRL8). In your opinion is it possible to do this? If so, could you please tell me in detail how to do it? Thank you very much.
 

MassiMo.Z78

Member
Sep 11, 2014
12
0
21
42
Pavia
Hi guy's so i was able to downgrade from Pie ( One Ui ) to Oreo
( save your media on your sd card or your PC then you check if they are there )
1 - Go to TWRP or Recovery to wipe data

2- Download and unzip

https://drive.google.com/file/d/1FQKt_lWUxxbaZGk37r4tkEMO0Faaci-R/view
and
https://drive.google.com/file/d/1-0sJtCjGrlmS4z_dDO_FXozR1g8u-vm8/view?usp=sharing
Put RMM STATE BYPASSER AND VERITY IN A SD CARD

3- Open Odin and untick auto reboot

4-click start on Odin now it's fully flash and now press power + volume down button and after the screen turn off directly press Power + volume down and Up now you are in download mode and check if the auto reboot is unticked

5- Click on reset on Odin and now on AP put TWRP and click on start now press Power + volume down and after the screen turn off press Power + Volume Up and now you are on TWRP go on wipe and click on format data and now go back and go to install and click on up a level and got extsd and now you flash RMM state bypasser and after verity and now reboot now you are on oreo and you install magisk after first reboot.
Hello (sorry for my english but it is translated by google)
your procedure is not clear as you haven't even mentioned the Downgrade.zip file, however I currently have a Galaxy a8 SM-A530F with an android 9 version (A530FXXSECTJ1) and I would like to revert to the android 8 version (A530FOXM3BRL8). In your opinion is it possible to do this? If so, could you please tell me in detail how to do it? Thank you very much.