here's my story: i just jailbroken my iPhone 3G about 6days ago and left with a backup(a) that's before jailbreaking my iPhone. then 6days later(today), i am starting to get frustrated with my iphone because of lags, lower battery life and etc. So i decided to unjailbreak it, but in this past 5 days i have been installing new apps from the app store, store some new information on my phone and also had it backup on itunes[backup (B)] if i want to unjailbreak it, and leave no residual data of it being jailbroken before. Should i restore to backup(a) or backup(b)? I'm hoping that i could restore to backup(b) so that i can keep all the new apps and new information. What should i do? thank you very much and appreciate your help.