The bin files should not be a problem since they are not modified in any way. pflash and MTKflash should not be a problem either.
It’s the modified windows firmwares that may be a problem. They are modified to work with other drive models than originally designed for.
Most companies won’t like that people buy the slower model and then modifies it to be a faster model. The slower model is cheaper so they looses some money because people buy the slower model and not the faster model…
I’ll leave it as it is for now, but I will consult some of the owners of this site and hear what opinion they have.