Device bricked after successful flash and battery removal

atc1441 / ATC_MiThermometer

Custom firmware for the Xiaomi Thermometer LYWSD03MMC and Telink Flasher via USB to Serial converter

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Device bricked after successful flash and battery removal #325

Open 82MHz opened 4 months ago

82MHz commented 4 months ago

Hi, bit of a long shot here... I flashed the device OTA with the latest release version, and it booted up fine afterwards, showed the last bytes of the MAC address as expected, everything seemed good. I noticed the battery indicator showed low battery, so I took the battery out, put a new one in and now the device seems dead, there is no activity on the screen anymore.

Any idea how I could revive this?

siradlib commented 3 months ago

Hi, which ATC firmware version did you use? I made the same experience here with v48 beta.... ...but after disconnecting for 5 mins and connectíng the battery again, my device Xiaomi lywsd03mmc came back to life. Give it a try!

aptalca commented 1 month ago

On the latest firmware, after a battery death and replacement, the screen never comes back on for me. But I can still connect over bt. Reflashing the latest doesn't make a difference.

The only thing that fixes it is to first flash the original manufacturer firmware, and then flashing the latest firmware from here.