Ender-3 V3 SE Do not show Thumbnails

I tried with Creality Print 5.1 different types of thumbnails, different sizes, nothing help. Found issue with JPG format, all GCODE for JPG looks like “AAAAAAA…”
Also tried Python script to replace PNG inside GCODE with JPG 200x200 Base64- also nothing…
Advise me with correct format or another method…
Thanks