hi guys, just a heads-up: the latest Rockbox 3.7.1 bricks the Clip v2. I had exactly this experience today and wasn't as fortunate in disassembling my Clip, which is now in the garbage.
Steps to repeat:
-download Rockbox installer
-plug in Clip
-find mount point, select device type
-install, wait for success message, safely remove device from within OS
-let Clip "update firmware"
-Clip just died horribly.
I registered solely to bring this message to anybody else who might otherwise have bricked an otherwise working Clip. Good luck all.