I've recently bought a Sansa C240 from a local store and I'm currently living in Japan. Since the original firmware is being quite spotty, I thought I'd try Rockbox but unfortunately it seems that it can't be detected. I have the device set in "MSC" mode (UMS, really), and the drive letter and such pops up, but whenever I try to install the Rockbox bootloader, sansapatcher and Rockbox Utility both say there's no Sansa device detected.
I checked my firmware version and it's actually 01.01.01J, which I couldn't find anything on the forum about. Is it possible that the Rockbox installer ignores C240s with Japanese firmwares?