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Thread: Downgrade Galaxy J4(SM-J400F) from 10 to 9

  1. #1
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    Downgrade Galaxy J4(SM-J400F) from 10 to 9

    Hi,

    How can i do it?
    From original samsung Android 10 to original samsung Android 9 ([ Login above or register to see download links. ])

    Thanks in advance

  2. #2
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    Quote Originally Posted by httpal [ Login above or register to see download links. ]
    Hi,

    How can i do it?
    From original samsung Android 10 to original samsung Android 9 ([ Login above or register to see download links. ])

    Thanks in advance
    Hi there

    Could you go to Software Info on your device, screenshot it from top to bottom and post it here?

    Why do you want to downgrade your device?

  3. #3
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    [ Login above or register to see download links. ]
    [ Login above or register to see download links. ]

    I want to downgrade my device because in the 10th version they did something with the screen, now it works differently, it hurts the eyes. I think they tried to beat the PWM. When I tried the antiPWM application "OLED Saver" earlier (a year ago), the result was the same.

    I was able to install only the latest version 9, but the screen now works the same as on 10. Odin3.14.4 does not allow installing older firmware versions.
    Last edited by httpal; 05-10-2020 at 07:37.

  4. #4
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    Quote Originally Posted by httpal [ Login above or register to see download links. ]
    [ Login above or register to see download links. ]
    [ Login above or register to see download links. ]

    I want to downgrade my device because in the 10th version they did something with the screen, now it works differently, it hurts the eyes. I think they tried to beat the PWM. When I tried the antiPWM application "OLED Saver" earlier (a year ago), the result was the same.

    I was able to install only the latest version 9, but the screen now works the same as on 10. Odin3.14.4 does not allow installing older firmware versions.
    Thanks for the screenshots

    Due to security reasons, you can't install older versions of Android 9

  5. #5
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    Ok. Can you tell me about "Full Firmware Archive: Free Premium ✓"?
    What's missing in the free version of the firmware?

  6. #6
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    Quote Originally Posted by httpal [ Login above or register to see download links. ]
    Ok. Can you tell me about "Full Firmware Archive: Free Premium ✓"?
    What's missing in the free version of the firmware?
    Nothing... (slower download speed)

    More info: [ Login above or register to see download links. ]

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