Hi guys. Thank you everybody so much for all these answers, it is so nice to see that the community is still really active. I come back on the problem after a few months because I would really like to use this Onion again. Now when I connect it to the USB the computer detects it but in serial connection nothing happen and the ligh on the Omega doesn't even turn on. I bought a CH341A to flash it with SPI, there is someone that knows how should I do it and which firmware should I flash? (Sorry but I've never done an SPI flash before)