Does this work between N900s? My N900 died and was sent to Nokia for repairs. If they honour the warranty it is likely they will just give me a new one rather than fix my faulty unit. So if I get my replacement unit, install this app and use a restore saved on my sd card will it work and get the new N900 to be the way my old one was with all the same files, installed apps, hildon desktop modifications, overclocking, themes, etc?