I installed the Autoplaybox app using an Android virtual machine and then I captured the traffic going to internet from that app while it was updating.Thanks, arkzrlo for the file and for making it v8 - easier to tell the difference between versions when installing! How / where are you getting the APK to repack it?
So I found the server used for the updates: https://bit.ly/2B5TLXo
The updates are in the folders having the date as name. The files in the other subfolders inside are for testing and they usually don't work with the dongle.