Thank you very much Denis! I've downloaded it a several times, because this seems to be the most obvious. But it was same - not working. I don't know what the problem is. I am totally out of ideas. It's a brand new Max2Pro...
Used Links:
http://www.boox.com/de/downloads-3/
https://drive.google.com/drive/folde...7Y_CDl3C6csiP0
http://www.boox.com/downloads/
https://drive.google.com/drive/folde...5UFjWAwo8ZIGBC
The Max2 found the update. The onyx OTA Service is updating, but then stopping with again with error "package verify failed".
Please help!