Every time I go on itunes to put the new 4.0 software on my iphone 3gs and press 'update' it says that my itunes is the most recent version and doesn't install the new software. Has anybody also had this problem or know how to fix it? A friend recommended that I click 'restore' to try and solve this problem but won't that delete everything eg. photos and contacts from my phone?? Many thanks in advance for any help.