AT&T Network Firmwares

SGH - I897 Captivate:

Android 2.3.3: I897UCKF1

Android 2.3.4: I897UCKH3

Android 2.3.5: I897UCKJ2

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SGH - I997 Infuse:

Android 2.3.5: I997UCKI4 - I997UCKJ1