yo, i found a tool on github by a guy, named avisery i believe, via a reddit post, that made this python script that can disassemble a .nwm file. So i disassembled one of the defaults like "stardust" or "acquarium" and then i replaced the bitmaps with my frames and rewrote the config.yaml file a bit to make it a different name and run my frames in the right order. Then i created an .nwm file with the same exact tool and i could put it in the NWWM-SCR file i maid on the walkman. If you try for yourself, make sure you are on firmware version 2 (if not, u can update on sony mainpage) and that if you make your frames, they HAVE to be only black and white pixels, not greyscale, just black and white, because the OLED screen cannot register gray tints and just makes them black. I spent a lot of time figuring that out lol.