Restore jailbroken iPhone 3GS?

I have an old 3GS that was jailbroken, and when i restore to the new iOS 6, my phone stuck at activation screen, no matter how many times i try to activate, it just didn't work, when i see on itunes, it say there's no sim card on my phone even tough there's a sim card there

Try holding both the home button and power button until it does something.

Maybe it is because the software is way too new for the OLD hardware of the iPhone 3GS. Plug it in, restore from iTunes.

Maybe put it into DFU mode (or recovery mode) and then restore it. (Google it if you don't know how)

Um. Throw it away and buy an andriod. Naah jokes, try reinstalling ios6(I though it was only available for iPhone 4, 4s, 5), or you could put your iPhone into recovery mode and recovery the iPod through iTunes. Otherwise sim could be broken or damaged try using a different sim card juts until you activit your phone.

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