Unexpected restart and bootloop


Andlommy

Members
Jun 10, 2017
7
15
Hi!
Mi Xiaomi Mi 9 SE restarted unexpectedly yesterday while i was listening to music and then entered TWRP.
It had xiaomi.eu_multi_MI9SE_20.8.13_v12-10 installed

So i tried reflashing recovery, ROM to no result - upon restart it just goes to TWRP

The only attempt to revive it that works is installing stock firmware through MiFlash
So i locked and unlocked the bootloader and flashed the
grus_eea_global_images_V11.0.9.0.QFBEUXM_20200702.0000.00_10.0_eea_cfbed573f4

Following that, i flashed the TWRP (twrp-3.3.1-18-grus.img) or (twrp-3.4.0-1-grus.img) - tried both, then boot into twrp and flash the
xiaomi.eu_multi_MI9SE_20.3.26_v11-10

Result is "almost" always the same - device will boot into recovery.

I've tried it a few dozen times now with different approaches - wipe the system/vendor, or format data, but i can't get a stable boot.
The only time when it boots is when it has stock image.
Other "partially successful" outcomes i had after flashing xiaomi.eu ROM are "boot and then restart" or "boot but no wifi"

Tried the empty vbmeta with fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img - again mostly with no result

I wonder what am i missing? Been flashing phones for years now but this one is a complete mystery

Is there a way to figure out why it goes to recovery?

Any suggestions welcome

Thanks :)