Not sure if anyone else on here has tried to install celebrity voices on their TomTom app but it seems the only way is to have a jailbroken iPhone? I saw a post on doing it through the ipa file but iTunes gives me an error message when trying to install on the iPhone because it was modified. Of course I have an iPhone 4 with version 4.1 so I can't jailbreak at the moment. Is there any other way? Thanks in advance!