Chuwi Hi9 Pro - Firmware needed - Battery defect?

Hey There,

my Chuwi Hi9 Pro went into a Bootloop so i’ve restored it via Settings.
This did not solve the Problem so I downloaded the Firmware from this Forum.
After restoring it via Flashtool it seems to be succesful but there is a problem with the Battery now.
It shows, that the battery is full but it turns off after a few seconds when I take off the cable.

This wasnt a Problem before flashing.

Can anyone please help??
What is the last Firmware of the Hi9 Pro and where can I download it?
I cant start in recovery mode, why? It says, that it’s not possible.

PLEASE HELP @chuwi @Management