@george
Thanks for the reply.
After burning IMG files for USB and EMMC successfully,but neither can boot into the desktop.
Probably the origin IMG files are broken(e.g. the latest debian13 /ubuntu24.04)
Please help to check and fix the IMG files.

@Rock
At present, the maximum version supported by coolpi laptop is 23.04. Ubuntu 24.04 has just been released a few days ago and adaptation will take some time. It is expected that a version will be released in May. Thank you for your support.