Bricked tablet

Bricked tablet

Viewing 15 posts - 1 through 15 (of 16 total)
  • Author
    Posts
  • #58605
    Bruno
    Participant
    • Posts: 24

    Hi, I have an Hi8 Pro single boot that I tried to flash the dual boot bios a few months back and bricked it.

    Where can I find an image to restore the bios with an SPI programmer? The tablet’s S/N ends in 4136 and the bios chip is a Winbond 25Q64.

    I’m desperate, this has been a paperweight for so long, I used it only for a week, any help is greatly appreciated.

    #58609
    Bruno
    Participant
    • Posts: 24

    @Chris G

    #58613
    Bruno
    Participant
    • Posts: 24

    Can I use the 8MB file from the bios update zip?

    #58622
    Vedran
    Participant
    • Posts: 54

    Would be useful to know all numbers apart from the last four in order to determine BIOS version needed.

    #58624
    Bruno
    Participant
    • Posts: 24

    PQ32G22151104136

    #58629
    Bruno
    Participant
    • Posts: 24

    Could someone with an SPI programmer dump the bios image?

    #58653
    Vedran
    Participant
    • Posts: 54

    My tablet is in the same batch as yours. You can find Chuwi recommended BIOS for (y)our serial number here:

    http://forum.chuwi.com/thread-225-1-1.html

    Personally, I had a pro put May BIOS for Dual OS Hi8 Pro. Since I did that it works amazingly good – running Build 14393.447.

    Unfortunately, I sacrificed bluetooth due to drivers issue. So my solution is not for everyone.

    #58654
    Bruno
    Participant
    • Posts: 24

    Do you have an SPI programmer?

    #58725
    Vedran
    Participant
    • Posts: 54

    No, I like I said, I gave it to a pro to do it.

    #58758
    Bruno
    Participant
    • Posts: 24

    I need to use the 8MByte .rom file from the bios update zip as it is the full bios image, but what will happen to the Windows product key (MSDM) stored in the bios?

    #58762
    Bruno
    Participant
    • Posts: 24

    And which 64-bit bios is safe to flash on the first batch of the singleboot Hi8 Pro?

    #59162
    shinebar
    Participant
    • Posts: 3

    I had the “black Screen, no LED, noch charging” – issue as well (S/N PQ32G221604) and just programmed the bios with the SPI-adapter. First the official Bios from the Chuwi-Forum, after that the one with the fix for the SD-Card. Both doesn’t change a thing – any hints for me?

    Battery is 3.7 Volts (when disconnected from the Mainboard). USB-Current is arround 0.15 Amps @ 5.1V when plugged in, but no led etc.

    #60184
    Bruno
    Participant
    • Posts: 24

    I managed to unbrick it.

    First press Erase, then press Blank to verify the chip is empty, then load the 8MB file from the bios update zip and press Program.

    #60241
    shinebar
    Participant
    • Posts: 3

    I managed to unbrick it. First press Erase, then press Blank to verify the chip is empty, then load the 8MB file from the bios update zip and press Program.

     

    Hm. Tried that again, Erase, Blank, Write, Verify without any Errors – no sign of life until now. I think I’ll leave the tablet on the charger for some hours.

    #60284
    Bruno
    Participant
    • Posts: 24

    Maybe you’re not using the correct bios. Do you have a singleboot Hi8 Pro?

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