No, I didn't try to format or wipe data.
This was the beginning of my desaster: My MI 10 phone gave me the message, that a new stable MIUI version v12.2.2.7 is available and asked me, whether it shall be downloaded. I agreed and the download finished successfully. Then I got the message, that my data are encrypted and that I need to enter the related password to get access again to my device. Then my Mi 10 turned into the "FASTBOOT" mode and I couldn't do anything (no turn off, no reboot, no TWRP mode).
The used OTG USB has been FAT32 formatted. How can I get it f2fs formatted? My Windows OS cannot do it.
Meanwhile I have successfully restored the TWRP main menu by entering the following fastboot commands:
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