Firmware Upgrade available for your phone:
Current firmware version : PDA:MK6 / PHONE:MK1 / CSC:MK4 (VOD)
Latest firmware version : PDA:NA5 / PHONE:NB1 / CSC:NB1 (VOD)
I've searched on internet, but the latest firmware version as per KIES is also 4.3. do I need to perform this Upgrade or not ? ? ?