i got and idea, because in last few months after Pie was released for our Xiaomi Android One devices (A1 / A2/Lite), after each month update cause bootloop for some users (i know someone can have fake ROM Android One in MIUI device) so my idea is this:
According to this article: http://en.miui.com/thread-823738-1-1.html and this part:
A/B (Seamless) System Updates
A/B system updates, also known as seamless updates, ensure a workable booting system remains on the disk during an over-the-air (OTA) update. This reduces the likelihood of an inactive device afterward, which means fewer device replacements and device reflashes at repair and warranty centers. This approach is already explored successfully by other commercial-grade operating systems, such as ChromeOS, and Android 8.0 comes with the necessary platform changes to conduct streaming updates.
More about partitions is here: https://www.xda-developers.com/h ... development-on-xda/
So, its possible to switch back to previous (working) version of Android System?
You may need this: https://forum.xda-developers.com/showthread.php?t=2317790
1. boot device to fastboot mode
2. check which partition is active ( in command line runned under administrator account and type this: fastboot getvar current-slot )
3. set active partition to other one ( fastboot --set-active=a if active slot was b and vice versa )
4. reboot device ( fastboot reboot )
Can someone with bootloop device confirm if this working?
Disclaimer: Im not responsible for any bricked device, and if you already have one you probably have nothing to loose. ;-)
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