Odyssey x86j4105 ubuntu 20.4 no /dev/ttyACM0 and no seeeduino listed under lsusb

I don’t have any other SAMD board…

Which are the steps to upload the right bootloader? I have to unmount the heatsink? Is it safe? I will lose the warranty?

The GPIO pins can be used to burn the bootloader?

Need for a project and now I cannot continue.

Thanks!