iPhone 4S wont go past apple logo after iOS 6.1 update.. HELP

Perform a Reset... Try again...

Reset ( No Data will be Lost )

Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears. Release the Buttons.

http://support.apple.com/kb/ht1430

If no joy...

Connect to iTunes on the computer you usually Sync with and “ Restore “...

http://support.apple.com/kb/HT1414

Try DFU Mode Restore. Open iTunes on computer. Connect iPhone to computer with USB cable. Hold both Home and Power button, after exactly 10 seconds release the Power Button, keep holding the Home button until iTunes recognizes iPhone in Recovery Mode, usually about 20 seconds time.

adamb13 wrote:

itunes wont recognize the phone... I have also tried to restart it that was 10+ times.

See Here > http://support.apple.com/kb/HT1808

You may need to try this More than Once...

Be sure to Follow ALL the Steps...

But... if the Device has been Modified... this will Not necessarily work.