

Taking this to an extreme, if you can’t gain access via software (unlikely if it hasn’t been updated in 5 years), you could disassemble it, locate the SPI interface for the NAND (assuming it uses SPI), and use something like an arduino with a loaded SPI reader sketch to read it. You can then pick it apart to find vulnerabilities, or just replace it.
I don’t think they would have?
A) The FSF doesn’t even like the term
B) They haven’t attempted to trademark “free software” or “software freedom” either.