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Has never updated from stock firmware.
Since I bought my AT&T Galaxy S4 is has been on the version 4.2.2 firmware. I've tried updating via both OTA and Kies, but for some strange reason, they both tell me 4.2.2 is the latest firmware, even though it clearly is not. I'm curious if there is actually some kind of bug in the preinstalled software causing it. I had thought the error was on AT&T's end, but as I said, even Samsung's updating software doesn't recognize it as being out of date. Unsurprisingly, AT&T has been of no help anyway. Should I try flashing the stock firmware onto the phone?