Unhappy [Q] HELP! Stuck in Odin Mode, Firmware upgrade encountered an issue.

Hi, This afternoon I tried to Re-root my galaxy s3 in 4.3. I did not know about "Knox," and tried to root anyways. Now, my phone just says: Firmware upgrade encountered an issue. Please select recovery mode in kies & try again. Im not all skilled with the techno magic and stuff, so please respond with help with a "to help a stupid person" response. I really need help! Also, it says Odin Mode in red in the corners , with this below it.

PRODUCT NAME: SGH-I747
CUSTOM BINARY DOWNLOAD: YES (2 COUNTS)
CURRENT BINARY: CUSTOM
SYSTEM STATUS: CUSTOM
[COLOR="Gray"]QUALCOME SECUREBOOT: ENABLE
WARRENTY BIT: 0
BOOTLOADER AP SWREV: 2


Please help, I will do anything!
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