After some reboots I've made decision upgrade firmware. I've followed instructions (LiveSuit+USB+VOL++Power(5-6 times) and so on) strict. Doesn't help. LiveSuit (1.05,1.06,1.07,1.09) just hangs after plugging tablet in usb-boot-mode into usb-port.
So I found another PC with Windows XP (first machine was Win7). Even better - GEMEI logo disappear - only black highlighted screen after power on. Device still recognizing as 1f3a:efe8. So i found this http://rhombus-tech.net/a10_mmc_boot/ . Still no luck: doesn't turn on at all, just produce sound lick "click" when pressing power for a while, device doesn't recognized by windows and linux (lsusb and udevadm are silent). What next?? I hope device wouldn't annihilate itself tomorrow.
Maybe just return device to DX (I've receive it just 2 weeks ago)??
P.S. sorry about my English, hope I am understabable
Edited by buzzypom, 11 April 2012 - 10:06 AM.