Software Update can't check for updates because of a network problem....after firmware update

I just bought a MBP w/Lion (10.7.4) and ran software update.  The first two items I updated were firmware for SMC (ver 1.5) and EFI (ver 2.7) and now my MBP says: "Software Update can't check for updates because of a network problem."  However, I can connect to the Internet to surf the web just fine.  This is the only update I've made.  Can firmware be uninstalled?  If I reverted to the image on my external drive that I did with CCC prior to the update, would that fix it?

Hi! i hope i'm able to explain what i worked out and what worked for me. I had the same message coming up "no internet connection, run network/internet diagnosis" etc etc. Internet connection was fine. What i finally did:
Open airport, check internet, internet options ; with me, IPv6 was set as  this (the letters are in german order and not in a english order, sorry...):
In system prefs, network/TCP/IP  IPv6 was set to "automatic":
I did change the settings in Airport back to "Link Local" and Software Update worked immediately normal whithout restarting the computer.
No idea what changed the settings; however i did run permission repairs beforehand with no connection to any problems, just as a normal kind of 'maintenance routine'.
Hope this helps others, it worked for me.
Cheers
Csico 

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