Mi10 Pro not recognized at PC in Fastboot anymore

Hi

I updated my Mi10 Pro to MIUI 13 xiaomi.eu ROM 22.1.5. and since that time the phone is not recognized in fastboot anymore when connected to my computer.
So I am not able to update to latest Weekly as this works only via Fastboot

First I thought something went wrong because the nice fastboot logo with the rabbit repairing the android robot was not there anymore, just the simple "fastboot" but I learned they changed the logo.

So fastboot on the device is shown, I can also still boot...

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