it's not difficult as long as you follow the guides

just go here: http://line6.com/community/community/support/effects/m9_m13?view=documents and see the backup guide and then the update to v2.00 guide (that's still relevant for all updates)

make sure you go to the downloads link at the top of this page and get the latest, which might be v2.01 as there was another update to fix an extra bug in v2.00

the update takes ages, maybe 15-20 minutes so just leave it updating.  it shouldn't take a fast laptop to do it, so yours should just chug along.

i recommend trying out the harmony and pitch shifter effects.  they're cool.