iphone unlocking in the high street - does it 'ruin' the iphone?

[joko]

i assume its not an official unlock - so what are the cons?

someone said that if you try to update it will lock up again...?

is it worth trying to get an official unlock?


thanks

[deggers316]

millions use this it's not rocket science either
http://www.ijailbreak.com/how-to-jailbreak/

[Ferdy88]

I have inlocked my iphone 4s here http://digitalunlocking.com/. Works great - no problem.