Android for Hi8 Pro CWI513

Hi,

I recently got a Chuvi CWI513 tablet, with serial number PQ32G221603XXXXX.
It only had windows 10 installed and it’s quite sluggish. I want to install android, however I can’t find the official rom anywhere.

I looked under here:
https://forum.chuwi.com/thread-225-1-1.html

but the link to the version corresponding to my serial number is broken.
I tried flashing the version from PQ32G221605XXXXX, however I got an error
“Failed to get bootloader partition2: not found”

Anyone can help?
Thanks in advance