how to donwgrade from galaxy s9 to android 8 stock rom. - Samsung Galaxy S9 Questions & Answers

I upgraded to android 10 binary 7, but I want to return the original rom, android 8.
alguém sabe o procedimento?
does anyone know the procedure?
downgrade android 10 binary 7 to android 8.

Highestavares said:
I upgraded to android 10 binary 7, but I want to return the original rom, android 8.
alguém sabe o procedimento?
does anyone know the procedure?
downgrade android 10 binary 7 to android 8.
Click to expand...
Click to collapse
You cannot. Anti roll back prevents this

Highestavares said:
I upgraded to android 10 binary 7, but I want to return the original rom, android 8.
alguém sabe o procedimento?
does anyone know the procedure?
downgrade android 10 binary 7 to android 8.
Click to expand...
Click to collapse
TheMadScientist said:
You cannot. Anti roll back prevents this
Click to expand...
Click to collapse
this is correct. You can roll back to previous versions of Android within the same bootloader revision, but once you go from x to y(bootloader version to bootloader version), you can never go back to x

Related

[GUIDE]Xiaomi A3(laurel_sprout) DO NOT DOWNGRADE ANDROID 10 TO 9!

guide obselete. removed it.
"After getting upgraded to Android 10, your device will have anti-rollback protection enabled."
more details here https://c.mi.com/thread-2918723-1-0.html?t=1583119181847
phoenix31121 said:
guide obselete. removed it.
"After getting upgraded to Android 10, your device will have anti-rollback protection enabled."
more details here https://c.mi.com/thread-2918723-1-0.html?t=1583119181847
Click to expand...
Click to collapse
Fake as tits.
I downgraded from 10 to 9 including hopping between some custom ROMs here and there and I'm currently running the latest Android 9 version.
Mi A2/Lite has anti rollback so this holds true, Mi A3 however does not.
Yepi69 said:
Fake as tits.
I downgraded from 10 to 9 including hopping between some custom ROMs here and there and I'm currently running the latest Android 9 version.
Mi A2/Lite has anti rollback so this holds true, Mi A3 however does not.
Click to expand...
Click to collapse
Going back and forth between android versions on a device with an unlocked bootloader using a custom recovery, and doing so in a stock device are two pretty different things.
deleted
Yepi69 said:
Fake as tits.
I downgraded from 10 to 9 including hopping between some custom ROMs here and there and I'm currently running the latest Android 9 version.
Mi A2/Lite has anti rollback so this holds true, Mi A3 however does not.
Click to expand...
Click to collapse
When I try to install twrp by flashing stock android 10 boot.img+change slot+flash twrp.img, I am not able to change slot and getting error which says 'fastboot.exe: unknown option -- set-active=a'. Help needed!
angmarGR said:
Going back and forth between android versions on a device with an unlocked bootloader using a custom recovery, and doing so in a stock device are two pretty different things.
Click to expand...
Click to collapse
Did it with a locked bootloader, straight up downgraded from 10 to Android 9. So far no issues what so ever
Yepi69 said:
Did it with a locked bootloader, straight up downgraded from 10 to Android 9. So far no issues what so ever
Click to expand...
Click to collapse
You did with locked?
amnher said:
You did with locked?
Click to expand...
Click to collapse
Yeah, I think what Xiaomi meant is that apps may have issues with it, which is to be expected as such
I flashed fastboot rom for android 9.0 pie with no issues after getting Android 10 OTA.
How come there are others who has no problems while others have sensor problems
Downgrade and sensor malfunction
I downgraded android 10 to 9 in MI A3 and the sensors are not working after.
light sensor
proximity sensor
gyroscope
compass
non of the sensors are detected following downgrade
how to fix this? if anyone could downgraded without sensor problem please share how .
thank you.
chachasl said:
I downgraded android 10 to 9 in MI A3 and the sensors are not working after.
light sensor
proximity sensor
gyroscope
compass
non of the sensors are detected following downgrade
how to fix this? if anyone could downgraded without sensor problem please share how .
thank you.
Click to expand...
Click to collapse
same problem here
thats because youre on android 10 firmware, you need to flash android 9 firmware... there's a telegram group @A3official and you can find the fw zip there if not on google
dimipage said:
thats because youre on android 10 firmware, you need to flash android 9 firmware... there's a telegram group @A3official and you can find the fw zip there if not on google
Click to expand...
Click to collapse
I flashed using android 9 official firmware using mi flash tool. With the official rom from mi website.
How the official rom can malfunction..is there any other way..?
SumanthBv said:
When I try to install twrp by flashing stock android 10 boot.img+change slot+flash twrp.img, I am not able to change slot and getting error which says 'fastboot.exe: unknown option -- set-active=a'. Help needed!
Click to expand...
Click to collapse
you see:
https://www.youtube.com/watch?v=6tXeTmhsd9Y
after installed twrp you use command:
fastboot set_active a
---------- Post added at 08:45 PM ---------- Previous post was at 08:42 PM ----------
ryan113 said:
same problem here
Click to expand...
Click to collapse
you see:
https://www.youtube.com/watch?v=6tXeTmhsd9Y
SumanthBv said:
When I try to install twrp by flashing stock android 10 boot.img+change slot+flash twrp.img, I am not able to change slot and getting error which says 'fastboot.exe: unknown option -- set-active=a'. Help needed!
Click to expand...
Click to collapse
use this command "fastboot set_active b"

Realme X china variant flashing global

Hello. I recently bought a Realme X on AliExpress but when I received it I noticed that it has Chinese rom in it. I just wanted to know if there is any chance to flash it with global rom?
Ps. I managed to unlock bootloader but im not sure if it can update successfully global rom.
Any reply could be helpful.
Thanks in advance
Me also
I have the chinese version and unlocked it.
twrp ok,custom rom from this fourm(ion os ,evolution os,pixel experience...) all work well on my phone.
xdaprae said:
I have the chinese version and unlocked it.
twrp ok,custom rom from this fourm(ion os ,evolution os,pixel experience...) all work well on my phone.
Click to expand...
Click to collapse
After I updated it with realmeui android 10 now twrp cant access internal storage to install any custom rom. Why it doesn't?
eni_pog said:
After I updated it with realmeui android 10 now twrp cant access internal storage to install any custom rom. Why it doesn't?
Click to expand...
Click to collapse
sorry but i have not met the same situation,if you set a lock pattern in the origin rom,you are required to comfirm your pattern in twrp
I update with realmeui android 9 ,using TWRP 3.3.1-31 from here:https://forum.xda-developers.com/realme-x/development/recovery-unofficial-twrp-realme-x-stable-t3959556 step by step.
after flash the custom ROM the fisrt time,my device can not boot ,just loop into twrp,after several attempts(reflash/wipe data and so on),it worked.
xdaprae said:
sorry but i have not met the same situation,if you set a lock pattern in the origin rom,you are required to comfirm your pattern in twrp
I update with realmeui android 9 ,using TWRP 3.3.1-31 from here:https://forum.xda-developers.com/realme-x/development/recovery-unofficial-twrp-realme-x-stable-t3959556 step by step.
after flash the custom ROM the fisrt time,my device can not boot ,just loop into twrp,after several attempts(reflash/wipe data and so on),it worked.
Click to expand...
Click to collapse
Thanks for you reply bro, i am just wondering about how those developers produce customs roms for this phone and they doesnt make roms to fit global version to cn version ( i think that would be so easy for them ).
I have also tried to put global images from Global to Cn Zip Files but not succesful.
Hope that we may achieve this goal someday ...
Help plz
I am still waiting for that
I have chinese version realme x
After upgrade to realme UI V1.0(Android 10)
in depth test apk can not execute,so I can not unlock bootloader
Can some bros. kindly advise how to unlock bootloader in realme UI V1.0
Thanks in advance!
i have realme x chines version with last android 10 ui how can i unlock the bootloader
u870s126 said:
I have chinese version realme x
After upgrade to realme UI V1.0(Android 10)
in depth test apk can not execute,so I can not unlock bootloader
Can some bros. kindly advise how to unlock bootloader in realme UI V1.0
Thanks in advance!
Click to expand...
Click to collapse
You should downgrade to color os
xdaprae said:
sorry but i have not met the same situation,if you set a lock pattern in the origin rom,you are required to comfirm your pattern in twrp
I update with realmeui android 9 ,using TWRP 3.3.1-31 from here:https://forum.xda-developers.com/realme-x/development/recovery-unofficial-twrp-realme-x-stable-t3959556 step by step.
after flash the custom ROM the fisrt time,my device can not boot ,just loop into twrp,after several attempts(reflash/wipe data and so on),it worked.
Click to expand...
Click to collapse
I tried installing evolutionOS. It installed successfully but got stuck on booting. It says Boot/recovery image is destroyed. How could you installed those roms bro?
hii
me also
---------- Post added at 07:38 PM ---------- Previous post was at 07:31 PM ----------
Me also0
eni_pog said:
You should downgrade to color os
Click to expand...
Click to collapse
Thanks Bros.
When I try to downgrade color os 6
Realme X has prevent rollback event
Who can teach me how to downgrade realme ui to color os?
Thanks in advance
u870s126 said:
Thanks Bros.
When I try to downgrade color os 6
Realme X has prevent rollback event
Who can teach me how to downgrade realme ui to color os?
Thanks in advance
Click to expand...
Click to collapse
Watch this tutorial https://youtu.be/be9rOgC7oKs and download the right firmware for you phone. If your phone is chinese version then download cn firmware
Hay alguna ROM cocinada que sea basada en la oficial pero con el idioma español?? Para el realme x chino. He intentado flashear la versión de la India que trae español pero me da error porque mi móvil es la versión China.
u870s126 said:
I have chinese version realme x
After upgrade to realme UI V1.0(Android 10)
in depth test apk can not execute,so I can not unlock bootloader
Can some bros. kindly advise how to unlock bootloader in realme UI V1.0
Thanks in advance!
Click to expand...
Click to collapse
Here is the new version of apk for realme UI.
I forgot where I downloaded this. I think that I downloaded it from somewhere in Realme community forum.
eni_pog said:
Watch this tutorial
and download the right firmware for you phone. If your phone is chinese version then download cn firmware
Click to expand...
Click to collapse
Thanks you very much for sharing my YouTube video here
Is there any way to flash global rom on china variant , If not then Is there any i can change the region on cn variant ???

Rollback from Android 10

Is it possible to rollback to android 9 or 8 from android 10 with Odin?
I tried once but it faild.
G960F
Thank you !
I am looking to downgrade too, but the same failed!
I have found this lifehacker.com/how-to-downgrade-your-phone-from-android-10-to-android-1837868743 and also youtube.com/watch?v=CdTT4cEUWc4
not sure if its legit, give it a try and let me know... Android 10 is a mess!
kentax said:
Is it possible to rollback to android 9 or 8 from android 10 with Odin?
I tried once but it faild.
G960F
Thank you !
Click to expand...
Click to collapse
It seems like it would be possible to downgrade with the use of a combination file.
But I can't find any for the current bootloader version.

Downgrade Q to P

Can be Downgrade Q to P?, Current version 11.012
Yes
I have done this by using MiFlash. (You will lose all data)
I downgraded from android 10 to android 8.1
So I was fed up with Xiaomi latest updates on this Phone Mi A2 lite and decided to give it a go to downgrade to android 8.1 back when this phone was A REAL BEAST! Guess what happened. Firstly there was no mobile network so I flashed again with...
forum.xda-developers.com

Question I can't roll back LE2120

Good morning, hope someone point me in the right direction, i have a Oneplus 9 Pro chinese LE2120, came with indian rom, but I am trying to move to the global one or european, anytime i try to flash the downgrade zip it shows a warning that i can't to downgrade due to avoid booting up failure, could somebody advice me with this please?
Thanks in advance.
pankk said:
Good morning, hope someone point me in the right direction, i have a Oneplus 9 Pro chinese LE2120, came with indian rom, but I am trying to move to the global one or european, anytime i try to flash the downgrade zip it shows a warning that i can't to downgrade due to avoid booting up failure, could somebody advice me with this please?
Thanks in advance.
Click to expand...
Click to collapse
Get a new downgrade zip that seems like it's a reg zip not downgrade zip
Try rollback packages from here
Downgrade OnePlus Android 12 to Android 11 [OxygenOS 12 to OxygenOS 11]
In this guide, we will show you the steps to downgrade OnePlus devices from Android 12 (OxygenOS 12) to Android 11 (OxygenOS 11)
www.droidwin.com
toolhas4degrees said:
Get a new downgrade zip that seems like it's a reg zip not downgrade zip
Try rollback packages from here
Downgrade OnePlus Android 12 to Android 11 [OxygenOS 12 to OxygenOS 11]
In this guide, we will show you the steps to downgrade OnePlus devices from Android 12 (OxygenOS 12) to Android 11 (OxygenOS 11)
www.droidwin.com
Click to expand...
Click to collapse
Thank you, i will try it!
Also I believe they mentioned a "rollback apk" in addition to the downgrade zip that needed to be used to roll back.
Forgot to mention that I am in 11.2.9.9
pankk said:
Forgot to mention that I am in 11.2.9.9
Click to expand...
Click to collapse
I have exactly the same phone and I have no problem running the India version. to run the global version wait for the next full global update. download it from the oxygen update and install it manually. I'm gonna do the same because I would Ike running the global version before oxygen Os 12 come.
Thank you for your response, that's what i want to do, run global before Oxygen 12.

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