HT1222 i updated my iphone 4 to ios6 and now it doesnt work at all :(

i updated my iphone 4 to ios6 n then it doesnt start or work at all

Since you say that you cannot do anything with the iPad at this point you may need to use DFU to restore it. Follow the above instructions about disabling any-virus software and the firewall, then follow these instructions.
Placing an iPhone into Device Firmware Upgrade (DFU) mode
DFU mode is not the same as restore mode. DFU mode bypasses the current OS installed. If you are getting errors trying to restore in iTunes, DFU mode is very likely for you.
1. Open iTunes and connect the iPad to your Mac/PC.
2. Press and hold the Home button and the Sleep/Wake button at the same time.
3. After exactly 10 seconds release the Sleep/Wake button. Continue holding the home button until you iTunes pops up a message telling you that it has detected an iPad in recovery mode.
4. Click OK and Restore your phone.

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