Does iPhone OS update make you loose all your SMSs?

WAZ

New member
Apr 27, 2008
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I have an iPhone 3GS and its jailbroken and unlocked since I'm not from a country where iPhones are sold by Apple but people. lol. So I;ve been wanting to install a newer version of iOS to my phone. I think the current one is 5.0.1 or something and that has a jailbreak and and unlock.

so my question is, if I update my iOS while having all my note and SMSs and voice memos in the phone, will they be lost during the update? SMSs are the most important here.

Or can i browse through the file system to find that SMS.db file and take a copy of it to replace it later after the update is done? I doubt that because iOS 5 has this iMessage thing so I was thinking if it would make a mess by replacing the old SMS.db file from iOS 4.0 to iOS 5.0.1.

Need help. Thanks. :)
My iPhone has 4.0 and i want 5.0.1
 
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