It seems to be that the Max 2 and Max2Pro have different firmwares. After contact Onyx they have today update their download section: http://www.boox.com/downloads/
Now there is a Pro 2.0.1 update
Using the wrong firmware (Max2) result in this error message: “Onyx OTA Service: package verify failed”.
The new Pro Update works fine, except some books won’t open after update, i am trying to delete all and re-copy again.
Anyone here has more in-depth information what’s the difference between the two firmwares?
Btw. a new tag “MAX2 PRO SERIES” for different kind of questions and problems based an a different firmware would be useful.