HT1386 I was trying to update my iphone and now I can not activate it, it says no sim card installed

I was trying to update my iphone and now I can not activate it, it says no sim card installed.
What can I do now, help please.

Ntmate68 wrote:
it's stuck on a screen that has a iTune and plug picture
See Here  >  http://support.apple.com/kb/HT1808
Once you have Recovered your Device...
Re-Sync your Content or Restore from the most recent Backup...
Restore from Backup
http://support.apple.com/kb/ht1766

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