if I were you , what Id do is:
get yourself a new sdcard (8-16gb) , then follow this thread:
about 1/2 way down I say how to installed the OS 3.1 image to a new sdcard
why a new card? because the one supplied originally with the organelle is only 4gb, you’ll want at least 8gb to be able to store patches on it
using a SD card + a wifi stick for moving patches to the organelle is MUCH more enjoyable than messing with the usb stick (and usb sticks tend to be a bit unreliable )
)