How do I un-jailbreak my iPhone?

[SCARFACE12]

I want to un-jailbreak it and re-jailbreak it because I have so many apps on there. How do I un-jailbreak it? I'm on 1.1.3 and I want to update to 1.1.4 aswell. Thanks.

[Safari]

Restore it bro...

[SCARFACE12]

Ah... but I'm going to lose my contacts/pictures correct?

[Safari]

Well sync it first, sync it all. It'll back it up fer ya. But my advice, keep 1.1.3. SO much better. No advantages on .4

[SCARFACE12]

Well, someone told me you get better service on 1.1.4. Is that true?

[Safari]

Well if ya need better service..but if ya have 4-5 bars already, not neccesary. Plus I am pretty sure you wont be able to use your back-up with it being a different FW

[SCARFACE12]

It varies, I get 4-5 bars sometimes but other times I'll get bars as low as 1-2. Should I upgrade to 1.1.4?

[Safari]

Do your research= ) If it was me, I wouldnt. But if you feel that you NEED more bars, then you can.

Also keep in mine you are risking your back up. I remember when i upgraded from .1 to .4, i lost be .1 backup. I am not 100% sure if thats also the case with .3-.4 unless it an iTunes/Apple upgrade, not a DFU-Restore upgrade. =)

Oh, also, you can always just uninstall all your apps and what not. I am not sure what ya have, but you could also use "Poof" to hide ones ya dont need to make Springboard room for the new one