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T428 stuck in flash mode

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    T428 stuck in flash mode

    Hi,
    My T428 was working fine, but now it's stuck in flash mode and when I connect it to the pc it shows "Found RkAndroid loader rock usb" in the flashing utility although the button is not pushed. If I connect it to the power supply it always go in the recovery screen and I cannot make it go past that.
    If you have any idea about how to revive it, please let me know.

    Thank you

    #2
    I tested further and found that is a short on the microswitch. I removed it thinking the microswitch is broken, but the pads are still shorted, so no luck. I removed the aluminum heatsink and checked the microprocessor. In my case the microprocessor seems to be uneven levelled on the pcb, so I tried to reflow the solder with a heat gun, but it didn't make any difference.
    Maybe later I'll try another trick to see if I can revive it...

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      #3
      Solved but not the nicest solution

      Finally I made the T428 to boot again by flashing the boot.img file twice, once for the boot and once for the recovery.
      Everything seems to be functioning normally, but I need to test it further.

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        #4
        Issues so far

        -Only 1 firmware is working and is Finless 1.5a
        -Internal sd (nand) cannot be mounted and you cannot download and install anything from outside the playstore. Also some applications from play store will complain about not having an internal sd. The fix is to swap the internal sd to the external sd in the vold.fstab

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