Has anyone done it before (using KIES, any samsung phone)?
How long it will take to update the firmware via Samsung Kies pc suite?
What are the additional things to do before and after I update my firmware?
(* I have taken backup of my contacts, messages and applications on the phone's memory card
* I will reset my phone before and after updating the firmware using the settings -> factory reset option)
If something goes wrong then what can be done to revert.
Please help me as I don't want to fall in trouble after attempting an update.