Onda V891w bios lock

Onda V891w bios lock

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    Riccardo
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    Hello everybody,

    i have a problem with Onda V891w, i made a mistake with bios setup and now there is no way to enter into the bios again with keyboard ’cause i think i disable OTG function. Windows start but is stuck to PIN, it give an error even if i type the right number and not show other way to access, wireless ok and the net is on. I try to pull out battery, push start button for 20 sec but bios not reset. Someone of you know a method to reset bios in other way? Maybe with short circuit flah memory?

    I attach motherboard photo, maybe someone can recognize flash.

    Thank you.

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