Sorry to revive a somewhat old thread. I looked into this today. I first tried to decompile the source, which didn't work. I then decided to look at the physical circuit to see what components were there, it turns out, it uses the MX29LV400TTC-90 4Mbit flash memory, which has very little information about it online. I'm not sure what the binary is compiled with but it's easy to extract the few strings there are. I feel like the work needed to reverse engineer this is beyond my interest. So with that said, if anyone should find this post and are serious about reverse engineering it, feel free to contact me about it to collaborate!
EDIT: After more investigations, I managed to decompile the bin with Ghidra, however, it is too much work for me to do alone. I'm still up for collabing on it though!