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.