Jakub Jelínek

Jakub Jelínek

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Viewing 8 posts - 1 through 8 (of 8 total)
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  • September 27, 2016 at 11:25 am #50931
    Jakub Jelínek
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    If you are not bricked, you don’t need the programmer – just boot a system rescue CD

    http://forum.chuwi.com/forum.php?mod=viewthread&tid=1766&page=5#pid7678

    April 22, 2016 at 5:56 pm #34701
    Jakub Jelínek
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    My flash chip was recognised without a problem, flashed OK, verified (even repeatedly). But no luck with powering up.

    April 22, 2016 at 5:54 pm #34699
    Jakub Jelínek
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    • Posts: 8

    I’ve ment power led on the USB hub (or any flashdisk). It just powers on and then every second blinks off for an instant (as when it resets).

    Also the CPU got warm before, now it stays cold.

    April 22, 2016 at 5:42 am #34618
    Jakub Jelínek
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    🙁 It seems my PMIC didn’t survive the 3.3V flashing. Flashed, verified, but it just flashes USB HUB power led and nothing more…

    April 22, 2016 at 3:20 am #34614
    Jakub Jelínek
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    • Posts: 8

    @Anton: And do you have the q64fW version of the chip? It is true that without building a level converter it would be much simpler. Thanks for info.

    April 21, 2016 at 8:20 pm #34574
    Jakub Jelínek
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    • Posts: 8

    I wouldn’t use 3.3V even if the flash chip may survive it (according to the datasheet it is well out of its max range) – it could fry something else on the board (even cpu) – by powering the flash we are potentially powering all the 1.8V power branch, who knows what that might do.

    April 21, 2016 at 5:59 pm #34556
    Jakub Jelínek
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    • Posts: 8

    This http://techtablets.com/forum/topic/chuwi-hi10-bios-update-for-x64/page/3/ seems promissing.

    My 2016 Hi10 has unfortunately a 1.8V version of the flash chip, so I’m waiting for some parts to build a level converter (3.3V Pi isn’t usable directly).

    Correct firmware should be avaliable on http://forum.chuwi.com/thread-229-1-1.html

    Opening the tablet and removing metal tab is easy, connecting testclips is much worse.

    Correct datasheet for the 1.8V flash is on https://www.winbond.com/resource-files/da00-w25q64fwc1.pdf

    I hope I’ll be able to fix my tablet.

    April 13, 2016 at 4:25 pm #33319
    Jakub Jelínek
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    • Posts: 8

    @Cyberheater: You are lucky – I accidentally did this with this update on another PC and it bricked my motherboard 🙁 – it isn’t even checking what hardware it is flashing.

    My ChuWi is now bricked too – update seemed to run OK (directly from WIN), but it didn’t turn on anymore afterwards.

    Does somebody know how to unbrick it?

    I have HI10 Q64G421602XXXXXX and I’ve unfortunately find the notice about bricking the 2016batch just after flashing it.

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