Debian kernel stuck at 4.4.167

[S265]

I just noticed that didn't fix it.
I had to manually add the repositories from http://deb.ayufan.eu/orgs/ayufan-rock64
And even then I didn't quite understand how to automatically install the latest version of linux-image-rockchip-4.4.
I had to install a specific kernel package manuall.
And even then the latest stable release is still over a year old at this poin 4.4.202-1237-rockchip-ayufan.
See also https://forum.pine64.org/showthread.php?tid=12652

Trying to think back . .  
Armbian Buster may be the way to go - it looks like this

____            _       __   _  _    
|  _ \ ___   ___| | __  / /_ | || |   
| |_) / _ \ / __| |/ / | '_ \| || |_  
|  _ < (_) | (__|   <  | (_) |__   _|
|_| \_\___/ \___|_|\_\  \___/   |_|   
                                     
Welcome to Armbian buster with Linux 5.7.15-rockchip64

System load:   0.00 0.00 0.00   Up time:       4 days 11:44
Memory usage:  5 % of 3912MB    IP:            192.168.178.43
CPU temp:      45°C            
Usage of /:    8% of 29G     

[ General system configuration (beta): armbian-config ]