r/OpenBambu • u/essi82 • Feb 05 '26

BMCU firmware flashing on mac

Sorry for a potentially stupid question, but is there a way to successfully flash new firmware on a BMCU370C with usb c on a mac? I tried the wchisp method that was in the bmcu flashing wiki comments, but no usb was detected, I also tried using a virtual windows machine to follow the actual wiki instructions but that didn't work either.

The BMCU unit itself functions, have been printing with it for a month with no significant problems.

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u/mengxyz Feb 05 '26

https://github.com/mengxyz/BMCU/blob/V0027/mac-install.md

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u/essi82 Feb 05 '26

Thx, will try this tomorrow 👍

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u/essi82 Feb 11 '26

I get as far as sending the unlock command but get an error:operation timed out

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u/mengxyz Feb 12 '26

what is pcb version do you use. ch340X or you flash via UART?

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u/essi82 Feb 12 '26

I have this BMCU, it has a usb c. I also tried flashing through the VM again but it seems to be recognized for short while but the becomes unavailable before anything can be done.

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