Flash original firmware?

Hi,

I had trouble with an unresponsive RGBW2. I could not reset it either. So after some googling I flashed the unit with Tasmota. But I would really like to flash it with the original firmware again. I tried restoring it with *.bin's from the zipped firmware but with no luck. Then I found this *.bin file https://www.facebook.com/groups/ShellyI…08190645946956/ and tried to flash it with that. But after that it looks like the RGBW2 just keeps rebooting real fast. I shorted GND and GPIO0, erased the unit first, rebooted, flashed it with the bin and rebooted again. But it doesn't seem to work. I tried this with ESPTool.exe, Tasmotizer and ESPEasy to flash it but none seem to work for me... Any ideas? Is there some kind of procedure I should follow?

PS. Flashing with Tasmota works everytime... But I would like the original firmware restored...

Regards, Arie

Thanks, I will look into it and report back

Hi,

Unfortunately it did not resolve my issue. I was able to create a firmware.bin but after flashing the unit is still stuck in some sort of bootloop. See attached picture for an example of the serial output: