I have updated my jailbroken iphone3gs 4.2.1 to 6.1.3?

Help! I have updated my iphone3gs to 6.1.3?
it was 4.2.1 jailbroken… N after d update it asked me the language on the phone and the country then it showed that the cable is connected to iphone… Now on itunes its giving a disgusting message that its unable to connect TRY AGAIN! WHAT CAN I DO TO SAVE MY PHONE FROM THIS DISASTER! Please help please help

Added (1). I'm UNABLE TO OPEN MY IPHONE AT All TO DO THE RESET AND ITS NOT GETTING CONNECTED TO THE IPHONE EITHER

There's no jailbreak for 6.1.3at the moment, try restoring your phone to factory settings but backup your things first.

Take the phone in to your carrier.

Ohh… You are in a great problem if you don't know how to jailbreak and use redsn0w etc…

first of all you need to hacktivate and jailbreak your iphone…
you will be OK if your phone is factory unlocked.

but if your iphone is not factory unlocked -
you will not get service (phone call, sms, gprs etc) even after hacktivating… Even without putting sim card, you will see searching… And after that no service… To fix that you need to downgrade your iphone baseband, and then you need to install ultrasn0w that will unlock the baseband to use your SIM card…

believe me, if you are not familiar with any of these above terms then don't risk your iphone because any wrong step will brick your phone (i hope you know what a bricked iphone is)… Take it to some mobile shop, they will solve everything under rs500.

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