Update to CoreELEC directly from LibreELEC?

ssh yourbox
cd /storage/.update
touch .nocompat
wget “https://github.com/CoreELEC/CoreELEC/releases/download/9.2.5/CoreELEC-Amlogic.arm-9.2.5.tar
reboot

Yay, that migration was a real 10-minute piece of cake for my Wetek Play 2.
Right after upgrade CE was 95% identical to my no-longer-mainted-for-AmLogic LibreELEC 9.0.2.

Few hiccups:

  1. Had to purge some /storage/logs to free up space for update.tar to be extracted.
  2. Mono add-on failed, as Thoradia repository (with Mono, Transmission and Sonarr) became missing - had to reinstall the repo from zip and restart Kodi.

Confirmed, tested on two wetek play 2 boxes here and working,

I would suggest that you use the exact link as specified within this message, the later builds will not install straight away,

Also allow some time for your DB to update (I have mine on central storage) before applying the next update or you may end up with you media library being left behind and having to re scrape everything.

Jay