darkxst
commented
2 months ago you can try using universal-silabs-flasher with bootloader reset. Web flasher cant work due to incorrect firmware.
universal-silabs-flasher --device </dev/ttyUSB0> --bootloader-reset sonoff flash <firmware.gbl>
Hello, While I was trying to update the firmware, HA kept not responding, so I was trying to downgrade it and I think I flushed the firmware that didn't fit my device :(
My device is a SONOFF Zigbee USB 3.0 Dongle-E Plus V2 with EFR32MG21. Initially, I checked the "6.10.3.0 build 297" version of the firmware on the web flasher and flushed the file "ncp-uart-hw-7.4.3.0-zbdonglee-115200.gbl".
However, the issues I'm facing haven't continued to be resolved, and I decided to downgrade to version 7.4.1 on the advice of several people. The problem is, I flushed the "skyconnect" firmware file to my device.
My device is no longer captured by the web flasher :( (The wrong file has already been flushed, so it's only natural that there's something wrong with the device)
I tried to use the Boot and Reset buttons to check the COM port recognized as Boot mode and use the commonly used flushing tool, but it failed.
Is there a way to reverse my device?