@blade_ Had a similar issue, when doing a clean flash. Turned out for me it was the "latest firmware" which caused the issue. It should state for now, use the latest available Android version 10 firmware (aka a Version previous to MIUI 12.5).
In order to fix it, I did install the latest MIUI version BEFORE 12.5 and after that a clean flash brought me a booting and working ROM.
(used latest OrangeFox Recovery, did a format data before flashing the rom)
In order to fix it, I did install the latest MIUI version BEFORE 12.5 and after that a clean flash brought me a booting and working ROM.
(used latest OrangeFox Recovery, did a format data before flashing the rom)