BOXER-8240AI Series

Hi,

I would like to install ubuntu on Boxer 8240 AI, I have some questions:

1. can I do it from USB? Can I do it through MicroSSD? or otherwise only through microUSB cable?

2. I need to write a tar.gz file. where do I get it from? From canonical, there are just ISO files, I guess I need a special targz from AAEON?

3. Is ubuntu 22.04 supported, or only 18.4?

Regards

Piotr