I'm referring to this board: https://www.vividunit.com/Main_Page tonymac32 has a branch for it on https://github.com/Tonymac32/build/tree/vivid but it hasn't gotten updated in a while and is not merged into the main repo.

@AndroidNewbie, what kind of help do you expect to receive? @Ducdanh Nguyen, are you sure it was my modified update.zip (hint: open it with any archiver and see for file "wipedata.flag" - is it there?)? Are old settings and apps stays in place after flashing? Are update.zip located in root of sd card? If all answers is yes, then try to update using usb flash drive instead of sd card.

That's an interesting question. The chip itself seems to communiate via spi or i2c. Since USB cannot do that they put a raspberry microcontroller (RP2040) on it to handle this. The communication then uses a simple serial connection with the ch341 chip. I assume the klipper thingies can handle this by themselves automatically while when connecting this to a different device, you have to come up with some way to communicate with this board.

Which of these boards are you refering to? https://github.com/armbian/build/tree/main/config/boards

I have my kernel locked to 6.1.75 but still after 25.8.2 update, I lost all USB devices on both of my Orange PI 5. Only the USB3 port is working. The only way I've been able to get access to the USB is by switching to the latest `current` kernel... Any clues on what is going on? Firmware or kernel upgrades are not doing anything... where can the issue be???? I tried downgrading to many different versions but beside the current branch, USB is gone. Thanks