Getting my c250 into MSC mode

[DaShiznit]

This isn't a problem with Rockbox, but my c250 v. 01.01.05P does not have a "Settings" menu on it anywhere.  I really (REALLY) want to Rockbox it, but if it doesn't get into MSC mode I don't think I can (I keep getting the "Configuration Error" when I try and run the Rockbox Utility, but I'm pretty sure that the c250 is in MTP mode).

Does anyone know how to switch modes in a Sansa c250 v. 01.01.05P?

Thanks.

[LambdaCalculus]

You'll have to roll back your firmware to get USB mode. Instructions are here.

[robin0800]

you can also boot it to the OF and connect it to computer if its in MTP mode on windows xp it will appear as a portal player, little picture of a player.
Now dissconnect from computer set hold to on and hold Rewind, replug player to computer this should now be MSC mode.