[ddavtian]

Originally Posted by bdub

x4 with Crosspoint.

https://github.com/crosspoint-reader/crosspoint-reader

It's a complete firmware replacement as far I understand it.

Yes, it's a replacement of original OS (which can be flashed back if needed).
This page shows different forks of crosspoint (some add read stats, others add games, etc.). I switch between crosspoint and crossink, both are really good.

https://www.readme.club/firmware
Very easy to flash different firmware, takes few minutes.