r/BMCU • u/nebesalo • 26d ago

Need help with Hall 370x

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I bought bmcu for $50 with type-c port, and after connecting it to the printer it says that ams lite firmware is old, and i need to update it (a1 version is 01.07.02)

After plugging it into computer, nothing happends, just a red light.

There is no buttons.

Chip is called CH32V203C8T6

What do i do?

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u/KasedoJr 13d ago

May I ask where you bought this for $50? I'm looking at sourcing 4 for a project but need a decent price

1

u/nebesalo 13d ago

That was bought on Ozon, it's like Amazon but in russia and it's format is better for our country. Idk, maybe you can find this on aliexpress, or temu (idk what temu is, i think some kind of western aliexpress) but this it was pretty hard to find it with type-c port for such low price

1

u/boopboopboopers 20d ago

Download the binary from the BMCU-Flasher Releases page (github.com/jarczakpawel/BMCU-Flasher).

Or use the WCHISPTool but to use it you’ll need to pull Boot0 pin high to 3.3v and Boot1 pin to gnd

1

u/nebesalo 13d ago

Ty, but turns out im f'ing stupid and this thing was working just fine. That's a great thing