iphone 4 factory unlocked jailbreak?

[tomsanity]

im planning to buy a factory unlocked iphone. when i jailbreak it(to use cydia), do i have to worry when there is an update?

 

[moussekateer]

im planning to buy a factory unlocked iphone. when i jailbreak it(to use cydia), do i have to worry when there is an update?

Yes you still have to worry about updates because you'll lose the jailbreak. What you don't have to worry about are baseband updates.