MXQ Pro+ (Plus) 4k - flashing / booting from SD

[DzaQ]

Grettings to all!

I have problems with flashing or/and booting my Box via SD card...

Specs:
MXQ Pro Plus 4k 2/16 GB
CPU: S905X
MB: H234 v2.42 2017-11-20
WIFI: RealTek RTL8723
CHIP: SAMSUNG KLMAG2GE4A-AOO1

i've tried booting:
- TWRP S9XX (as "recovery.img")
- TWRP S905x (as "recovery.img")
- Some Custom ROMS burned with SD/USB creators (tried different device_trees)

SD card is 16GB formated in FAT32.

In every scenario i have same result - booting stuck at first logo...

At the moment i wait for Male A - Male A cable to flash it properly
Meanwhile i'm asking for some advices from more experienced android magicians...
What am i missisng here? What do i do wrong?

Whats my goal?
To make it usable! At the moment device is not running Disney+, HBO MAX, Amazon Prime and even have problems with YouTube... It is useless...

Please, HELP...

Cheers
DzaQ

[em3ka]

I have problems with flashing or/and booting my Box via SD card..

Amlogic firmware update guide for Android TV-Box (APCTV)

Booting ROM .img-es from SD card is not possible.

i've tried booting:
- TWRP S9XX (as "recovery.img")...

Use temporary TWRP...

At the moment i wait for Male A - Male A cable to flash it properly

It's recommended (only) flashing method.

MXQ devices (so many hardware versions) are infamous due to compatibility issues, so AtvX firmware may not work.