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  • redmi 7A

    Hi all, is possible repair bricked 7A, when usb repair not sucessfull..
    there is an isp solution?
    REDMI 7A.jpg

  • #2
    Download riffpkg and save it to /repairpacks folder.
    For VCC/VCCQ connect usb cable to phone, make sure to have 100 ohm pull up resistor between box VCCQ and CLK signals.

    Xiaomi_Redmi7A_Pine_ISP.riffpkg
    Attached Files
    ICQ: 299-912-089
    QQ: 1634811353

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    • #3
      Thnx sir, but i dont see ver1,88 on support..

      Comment


      • #4
        Visit beta sw folder.
        Link
        ICQ: 299-912-089
        QQ: 1634811353

        Comment


        • #5
          i need buy new box, my riff 1 has problem connect anny phone

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          • #6
            Originally posted by djuce View Post
            i need buy new box, my riff 1 has problem connect anny phone
            Just make sure to add 100 ohm resistor between point B on board and CLK pin.
            ICQ: 299-912-089
            QQ: 1634811353

            Comment


            • #7

              Do you think this is a good adaper? Point B je VCCQ? thnxviber_image_2020-05-29_09-09-45.jpg

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              • #8
                This adapter is fine, but you need to add 100 ohm resistor also to CLK line from VCCQ. Blue switch is used to enable pull up for Dat0 and CMD, but for CLK not.

                So far best results with V1 hardware is by this:

                Target device power by connecting USB cable to device and same PC where RIFF Box is connected.
                CMD, CLK, DAT0 and GND signals connected.

                In case where this adapter is used, You need to set switches properly - VCC has two positions (3.3 and 2.8) and VCCQ has three positions - 1.8, 2.6 and 3.3.
                Since you wont use power from adapter, its important just to set VCCQ level, to 1.8.
                ICQ: 299-912-089
                QQ: 1634811353

                Comment

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