Hi Demetris , I tried your last image LibreELEC-S8X2.arm-8.0.2-MXIII-PLUS.img but again my wifi didnt work.
Once again my specs :
MXIII-G 2G Amlogic S812 with AP6330 Chip . Inside the box specs : Netxeon MXIII-C v1.1
This is my working official firmware : Yandex.Disk (MXIII-C_202L1) .
Maybe on the next update tried to incude a fix for it.
Συγχαρητήρια για την εργασία σου , Πάνος .