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Published 20 hours ago • verified publisher icon libretiny-eu

Unknown bootloader CRC - 0xAE323E12

Open msacharewicz opened this issue 2 weeks ago • 21 comments
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Bootloader CRC: 0xAE323E12

Device: OXT M222 cheap 2-channel relay advertised as "Tuya/WiFi/Matter", Matter works, device presents itself as "Uascent Smart Switch (1031)".

Board layout is identical to CB2S, but it's hard to be sure without looking at the front, and unsoldering this whole contraption is obviously well beyond my skills. Where you'd expect CB2S to be printed, there's "UAM02..." instead:

Image

ESPHome fails to boot. Kind of. Got a terminal output once, never again. Then flashed back the original dump, worked. Then tried flashing ESPHome again, few different approaches, nothing worked. Doubt it's an issue of 3V3 power from UART, doesn't boot on 230VAC too.

Dump not parsing, "doesn't contain known storage area".

msacharewicz avatar Nov 05 '25 17:11 msacharewicz