I can't upgrade my S III software from 4.0.4 to 4.1.1 Samsung have released the 4.1.1 update for the SGS III and I am trying to upgrade my software from 4.0.4 to 4.1.1, but my Galaxy S III keeps saying:


  The server is busy or not available now, try another time or use the
  PC Kies to upgrade it.
  When I used the PC kies it gave me the message shown in thi pic below :
  


Is there any way to solve this problem? I'm very eager to upgrade my phone Jelly Bean.
As the error says, you've got 2 options


Use Kies to install the upgrade.
Wait until your carrier's wind-up toy servers get un-overloaded.


A third option would be to obtain an image of the appropriate firmware (e.g. from samfirmware) and flash it via ODIN, though this is slightly more involved.

As an addendum, I was getting this myself with my own GS3 on Virgin mobile Canada (aka Bell Canada) and I ended up waiting just about 2 days, from the initial reports of people upgrading on Sunday until I got it late Tuesday evening.