Probably late with this reply, but if you choose not to sign in/link your account, the Vita will create a temporary PSN account that'll take you to the main menu so you can update the software.
Yeah sorted it now.
I have to say the Vita is probably the most infuriating device i've ever had to setup though.
The ridiculous situation i pointed out above, is only exacerbated when it comes to 3G setup. Followed the vodafone instructions that came in the pack, and guess what... it didn't work. You go through the whole process and at the end it tells you to ring 1740 and activate the sim additionally. Sadly that's not a freephone number, so onto vodafone. Trying to navigate their automated system is a pain, and finally after 30 minutes and the operator trying to find out what a Vita is on her system, i was activated.
Seriously what happened to turn it on and go ????
Took me ages to locate the memory card slot, i think the ps-vita has wrecked my head.
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I got the Starter Kit with mine for the case, screen protector and game holder. Quite nice. The case makes it look like a sandwich though Just syncing to my PS3 to copy all the games I downloaded last night, it takes it sweet time.
Oh the wipeout offer 3g vodafone offer takes 10 days for the code to arrive. I bought the game anyway on cart, so not a bother.