Upgrade iOS 4.1 to iOS 4.3.3
Dear Sir:
I have a iphone 3GS recovered from jail broken and unlocked ios 4.2.1. Now after recovery, my iOS is 4.1(8B117). Every time when I connect my iphone 3gs to itunes, itunes pops up a window to upgrade to 4.3.3. As of today, I click "later" button. Is it safe that iTunes upgrade to iOS 4.3.3? Please help. Thanks.