Is it possible to downgrade to older firmware on the Mate 9 from b190 to the prior ones? I want to see if battery life is better on the older stock rom. Do I have to root to be able to do this?
You can flash HWOTA method for downgrade firmware.
https://forum.xda-developers.com/mate-9/how-to/guide-mate-9-flash-update-package-t3593108
Probably already answered but if I install the Oreo OTA once it comes to my device will I be able to downgrade to a previous nougat build later? I heard somewhere that Oreo has a different bootloader so we wouldn't be able to downgrade to nougat if I wanted to.
I prefer the speed and performance of marshmallow on the S7. Where are the correct files I should flash in Odin and which version of Odin should I be using to flash Android 6?
So apparently the camera isn't working after downgrade to 6?
Not something I'm willing to deal with unless the issue has been solved.
You can't downgrade snapdragon S7 models (G930U/T/V/A/P) due to the locked bootloader
Any downgrading would only work on the G930F with OEM unlock
Help root or downgrade or both?
Beanvee7 said:
You can't downgrade snapdragon S7 models (G930U/T/V/A/P) due to the locked bootloader
Any downgrading would only work on the G930F with OEM unlock
Click to expand...
Click to collapse
I have a sm-g930u factory unlocked and Im also trying to get all i need to downgrade from oreo which is havoc on my battery and i dont know if its better to downgrade to laterst nougat or root it and take care of bloatware to help battery drain yet the problem will persist which is that the upgrade is designed for s8 and s9 with octacore processor and the s7 is working harder with a quad core so temp will always be hotter than before and slower than with nougat . Any help with proper step by step in downgrading my factory unlocked phone would be appreciated and any root links as i havent done it in years.
Beanvee7 said:
You can't downgrade snapdragon S7 models (G930U/T/V/A/P) due to the locked bootloader
Any downgrading would only work on the G930F with OEM unlock
Click to expand...
Click to collapse
You can downgrade. You just can't root.
dave678 said:
You can downgrade. You just can't root.
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Click to collapse
thats not true
You can downgrade any version bit loader by flashing the combo firmware and the rooting combo firmware then flash stock nougat system image its basically what the root method is for Rev11/B. If you are just on nougat then you would have to get the combo firmware that matches the bootloader version you have because if you flash my rev11/B root method you are forever stuck on that bootloader and can never use nougat again or have oreo root as there is no eng root boot.img available for oreo root on rev11/B bootloader
jrkruse said:
You can downgrade any version bit loader by flashing the combo firmware and the rooting combo firmware then flash stock nougat system image its basically what the root method is for Rev11/B. If you are just on nougat then you would have to get the combo firmware that matches the bootloader version you have because if you flash my rev11/B root method you are forever stuck on that bootloader and can never use nougat again or have oreo root as there is no eng root boot.img available for oreo root on rev11/B bootloader
Click to expand...
Click to collapse
Oh I meant if you're not rooted.
dave678 said:
Oh I meant if you're not rooted.
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Click to collapse
you can downgrade too marshmallow from any version you have because combo firmware for s7 is marshmallow based and its available for all bootloader versions. You just use the combo bootloaders and boot.img and stock system image then root it
If your still on bit 4 you can just flash stock bit 4 marsmallow and root with marshmallow eng root img
Hello everyone
I want to return to nougat from Oreo in galaxy s8+.Current version installed is G955FXXU4CRK1. But to downgrade there is no nougat file corresponding to U4. I tried to downgrade using U1 nougat PDA but it is of no use.
Is there any other way to return back to nougat. Thanks
I have unlocked A750F android pie bootloader version 4. I want to downgrade to oreo cuz of performance issues. Anyone knows how to downgrade with an unlocked bootloader or how can i create a TWRP flashable zip from official oreo .tar.md5 files (bl,ap,cp,csc).