I can confirm that the functionality of Foxy has been unaffected by the new firmware. I transferred a short Enc HD clip to USB after 'Foxing' the hmt file. Transferred it to PC and played it back successfully with VLC.Foxy still works - at least, it clears the Enc flag, though I haven't actually transferred a file with USB to check that it is properly decoded.
Now we just need af123 to update the new firmware with his mods and we'll be ready to rock'n'roll again.