Kies doesn't support updating my device.

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http://forum.xda-developers.com – Hello.I flashed a firmware using odin because I was having wifi problems(I'm not having this problem anymore).Some days later I realized that I couldn't upgrade my S2 via kies.When my device is connected to kies I see a message "Your device does not support software upgrading via kies". How can I solve this problem.I would like to upgrade to official Jelly Bean when it comes out. Sent from my GT-I9100 using xda app-developers app (HowTos)