X96Air_100 does not load from SD/flash with firmware

Is your preinstalled Android the version " X96Air_100_20201125-2051" ?

If yes, you may have a look at this post

This guy got a version with 4GB RAM, 64GB eMMC, 2,4GHz and 5GHz, BT, but only a 100MB Lan. Perhaps his findings and a comparision of the pcb can help you.