I'm having the same issue, the board I wanna debug is lpc4370 and it would error out, so i figured a firmware update would help. But it wont build. Newer toolchains find more warnings and errors, but even turning off Werror it still finds actually errors not warnings. I worked thru sum of them before giving up. A schematic is a must if we ever wanna repurpose it as well, or use sercom mixing to bust out say i2c. Reading the forum etc it doesnt seem likely well ever even get a response on this. Even knowing what toolchain version they managed to compile this with would be a huge help.