Formuler do not update the Android OS - only updates to MYTVOnline 3 app for bug fix / improvements.
The Z!0 and earlier boxes are MYTVOnline 2 - these will not get upgraded to MYTVOnline 3 - these are still good boxes for IPTV running Android 10 or Android 7 for Z8 box
Started with Z7+5G box / MYTVOnline app, upgraded to Z8 pro because of MYTVOnline 2 app, setup for our requirements and easy to use with remote -
Tivimate - have used it but above is better in my view.
Have setup Formuler Z11 pro with MYTVOnline 3 - more features and better than MYTVOnline 2 but my elderly parents are used to Z8 pro - so no need to upgrade our main box,
If you are interested read / watch Troyās review video of Z11 pro