If you are looking for "verified" features that make the tablet worth keeping (with or without a custom ROM):
Because the iPlay 40 is a Treble-compatible device, you can flash GSIs instead of waiting for a device-specific build. Verified builds reported by the community include: LineageOS (20/21): alldocube iplay 40 custom rom verified
Before starting, you must identify your specific model. Flashing the wrong firmware can lead to a "boot loop" or a bricked device. The original model. If you are looking for "verified" features that
LineageOS is the most famous custom ROM in history, and its Android 13 build for the iPlay 40 is arguably the best operating system this tablet will ever see. alldocube iplay 40 custom rom verified