tat firmware is as old as 2016, and yes it was their last released for that box.
The firmware just prior to that played havoc on the avovs at that time and so the 1.0.20 was released to fix the issues.
The 'tlp' in the firmware name is just the firmware name and not the box name.
It is the original TVOnline that you own.
I would stop trying messing with the firmware and instead use that box with m3u files (Playlists from the service website).
Look for a Player to install from your Market.
VLC Player or the avov did at one time have Player called SimpleTV in the Market and another called WEB (that WEB is not an m3u Player thou, it works like that TVOnline worked (with MAC attached).
Do the m3u Playlist method and you will be back to watching your TV channels.
Or the WEB app willl work an is so easy you will be surprised.
need any direction at getting a m3u Playlist , check the Sticky threads in each provider sub forum here on site... or ask
Or open the second link in my signature shown below
The Players and The Playlists