Thanks, Jeff.
Wainlux builds some machines with this exact STM32 board and the same crappy proprietary firmware this little Cenoz machine came with. BUT… they also will supply, upon request, a GRBL 1.1 upgrade for this board. A guy over on the LB forum has already downloaded the upgrade – and provided a zipfile containing the ROM.bin and a .exe file – and flashed it onto the JL1 board… as he says, “effortlessly”. He provides some instructions but these are the same ones that mostly seem like Greek to me…
I’ve asked here first for help as you guys know me and may be willing/able to do the “hand-holding” I’ll probably need. Here’s the zipfile he provided if that helps…
upgrade.zip (38.4 KB)
– David