supporting the proxmark3 is a tall order… but the flashing does not sound right… maybe i’m wrong but that seems to me that it’s busy when doing nothing, which should not be the case.
what interface package are you using? mac? windows? linux? is your proxmark set up as a virtual com port? are you connecting properly to it? are you entering into the environment and issuing those commands or are you attempting to send them via command line?
I already found the problem.
I wasnt using the command “./client/proxmark3.exe comX”
The “help” command is from the MINGW32 shell window, thats why nothing was working