i made custom android tv fw version for G1 based on latest ota , has features like .
- Unlock developer options
- default will Boot coreelec in SDcard and USB
- DV / HDR adaptive
- block update ota
- Remove bloatware
- work all google services , netfix …
To flash this firmware, you must not update ota.
If anyone is interested can PM me , sorry i don’t post it here because SDMC can see it and fix it