Kies frimware update issue

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http://forums.androidcentral.com – To make a long story short, I had to reinstall the OS on my S2 with what I thought was the stock version. When I connect to Kies I get a message saying that the firmware version can't be upgraded using Kies. Does this mean that when the Jellybean update becomes available (next month supposedly) I won't be able to update? From what I understand it has to be done through Kies, because AT&T won't be doing an OTA update. (HowTos)