Second, what is your 1320 on, WP8, WP8.1 DP, or WP8.1/Cyan? You can check to see if the firmware version matches your phone's version by going to Settings>About> Firmware revision number.
Okay. Check your firmware on your phone. If the firmware revision number from the Nokia Recovery Tool matches the one that you have on your phone with WP8.1DP, then it will revert back to 8.0. However, if the firmware revision number doesn't match, then that's probably 8.1/Cyan.