A new Apollo M-1 LED Matrix WLED 16.01 firmware just dropped to test! It should pre-select everything for you and be ready to go out of the box! It is also much easier to add images and gifs using the new Pixelforge tool! Plus, there is a new scrolling text and pixel paint which allows you to draw on your matrix in real time!
This is a game changer! Huge shout out to the WLED team and @netmindz!
FLASHING METHOD WILL PROBABLY DELETE YOUR DEVICE AND ANY PRESETS SO MAKE A BACKUP!
OTA METHOD SHOULD KEEP YOUR SETTINGS ETC, BUT BACKUP ANYWAY!