Check Release Note.
Linux 4.9 Images
NoteVIM2 Only support Ubuntu 18.04 for Linux 4.9.
Mainline Kernel Images
Only for SD/USB Installation.
NoteVIM2 Only support Ubuntu 20.04 for Mainline Linux.
Deprecated:
EMMC InstallationImages used to be flashed to onboard eMMC via Amlogic USB Burning Tool.
Check Upgrade Via USB Cable Documentation.
SD/USB InstallationImages used to be flashed to SD/USB storage.
Check Boot From Ext Media Documentation.
Check Write SD Image To eMMC to write the image to onboard eMMC.