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    Exclamation FIrmware upgrade encountered an issue... PLEASE HELP!! Galaxy S3 I747

    Hey guys.
    I have a Galaxy S3 (AT&T version). I tried to root it with Odin 3.09 so that I can unlock my device but every time i started the flashing in Odin it said "fail". After maybe the 9th or 10th time trying, the " Firmware upgrade encountered an issue. Please select recovery mode in kies & try again." Error popped on the screen.
    On the top left it also said:
    ODIN MODE
    PRODUCT NAME: SGH-I747
    CUSTOM BINARY DOWNLOAD: Yes (14 counts) [i tried to flash again a couple of time thinking it would solve the problem]
    CURRENT BINARY: Custom
    SYSTEM STATUS: Custom
    QUALCOMM SECUREBOOT: ENABLE
    warranty Bit: 1
    BOOTLOADER RP SWERV: 2

    Because of my stupidity, i forgot to backup my device before trying to root!
    I just wanted to know if there is a way of solving that problem without losing all the data on my phone. if not, how can i recover the data.
    If none of this is possible, how to repair it so that i can use it again



    And one last question. Is there another (free) way of unlocking my device?

    Thanks

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