While Android custom ROMs for the H6 can be rare and unstable, the "hot" development for this chip is actually happening in the Linux sphere.
. Custom builds like LibreELEC may trigger "Hardware Protection" shutdowns because they attempt to run at full speed by default.
However, the H6 was fabricated on a . Compared to modern 12nm or 7nm chips, 28nm leaks voltage. When you push the CPU past 1.5GHz, leakage current translates directly into heat.
To install a custom ROM on an Allwinner device, you generally need the PhoenixSuit or LiveSuit tool on a Windows PC. You will also need a male-to-male USB-A cable.
Debloating: Removing junk apps that pin the CPU at 10% load constantly. Essential Installation Tips