1. LuminaryLion's Avatar
    Hello everyone

    I am new on this forum and I have been looking here and there alot to find out my problem, but still could not figure out what to do.

    Let me explain what I aim to do:
    I want to downgrade my Samsung Galaxy S3 (SGH-I747M) with Telus from version 4.4.1 to 4.1.1 in ordor to be able to unlock my device.

    Running on Odin3_v.185 (Also tried on Odin3_v3.04)

    So, I boot my device into Download/Odin Mode;
    Connect it to my computer using USB port;
    (Previously downloaded Samsung Galaxy S3 Drivers) Odin sees my Device;
    I add the PDA file;
    Uncheck "Auto Reboot";
    Press start then:

    <ID:0/003> Added!!
    <OSM> Enter CS for MD5..
    <OSM> Check MD5.. Do not unplug the cable..
    <OSM> Please wait..
    <OSM> KIES_HOME_I747MUMBLL1_I747MPCTBLL1_688429_REV04_user_low_ship.tar.md5 is valid.
    <OSM> Checking MD5 finished Sucessfully..
    <OSM> Leave CS..
    <ID:0/003> Odin v.3 engine (ID:3)..
    <ID:0/003> File analysis..
    <ID:0/003> SetupConnection..
    <ID:0/003> Initialzation..
    <ID:0/003> Get PIT for mapping..
    <ID:0/003> Firmware update start..
    <ID:0/003> sbl2.mbn
    <ID:0/003> NAND Write Start!!
    <ID:0/003> sbl3.mbn
    <ID:0/003> aboot.mbn
    <ID:0/003> Complete(Write) operation failed.
    <OSM> All threads completed. (succeed 0 / failed 1)

    I don't know if I missed something or my .md5 file is wrong (which I downloaded a second version with same result)...

    Any help will be much appreciated!!

    Thank you,

    12-08-2014 10:53 PM
  2. Golfdriver97's Avatar
    Welcome to the forums.
    from version 4.4.1 to 4.1.1
    That is the issue, the problem, and why it is failing. Samsung included a security protocol called Knox in the 4.3 bootloader. Once you took that update, you cannot roll back beyond that.
    12-08-2014 10:57 PM
  3. Rukbat's Avatar
    Once you're at 4.4, you can't even flash 4.3. (It's not Knox that;s doing it, it's a bank of "software fuses", and 4.4 is set to 3 IIRC, while it has to be set to 2 to flash 4.3. And it's a "write once" kind of thing - once it changes from 2 to 3, the only way to change it back is to put in a motherboard that's got the fuses set the way you want.)

    And you wonder - no, maybe you don't - why so many people are looking for alternatives to Samsung for their next phone.
    12-15-2014 12:03 AM

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