[tchabada]

I think Sony blocked Kodi's package id.
Me and some users tested, both Kodi 18 64bit and 32bit cannot be installed.

I compiled Kodo 32bit, changed it's package id to com.amazon.aiv.eu .
Kodi get installed and runs just fine.

Can you upload your Kodi please.
I try to change the id but not working.

Thanks   

I uploaded it here, you can give it a try. 
Good luck.

https://mega.nz/#!wNUyzSDa!N3ZhqXysKprPp...X4a_alHdj0 

 Could you please build latest beta for Sony AF9 TV(don't know if is it 32 or 64 bit)