I worked on this theme all afternoon, and theming the EZ-Flash Omega firmware is no easy task... Shoutout to @Sterophonick for all the resource help.
(@TechieSaru's SimpleLightDE v1.4 fork was used as my code base for v1.1, so any changes and...
The kernel files for the EZ-Flash Parallel had just been found:
https://gbatemp.net/download/ez-flash-parallel-kernel.38438/
Video of the flashcart in action.
https://www.bilibili.com/video/BV1Jt421W7Rd/