Macbook M1 Stuck in boot loop after update

[DisconnectTheMind]

I got this problem even before update but it booted after smc reset.
then I updated macos and it just reboots and reboots.
Tried nvram reset, smc reset, tried to get in recovery - doesn’t work, tried to do safe mode - doesn’t work.
Apple Support doesn’t works too - idk what to do!

 

[GHM]

I've just been troubleshooting something similar and it seems I've now isolated it to a USB-C hub (either the hub itself or something that is plugged in to it). ie. boots OK with hub unplugged.
Further testing under way....

 

[GHM]

Further isolation testing has narrowed it down to an external SSD (Samsung T5) that was plugged into the hub.

 

[Spacegray]

Tried nvram reset, smc reset, tried to get in recovery - doesn’t work, tried to do safe mode - doesn’t work.
Apple Support doesn’t works too - idk what to do!

There is no SMC- or VRAM-reset available on M1 MACs.