I used the same procedures on my X88 Pro 20 RK3566 8gb ram, 64gb rom, and it works amazing (i first installed the T95 Plus firmware just to be sure), i think all of the RK3566 boards are the same (or everything is compatible) because i had previously used the firmware from H96 Max, HK1 Rbox R2, HK1 Rbox K3, T95 Plus in my tvbox and all of them worked just fine, hope this helps someone