MK812A DOOBOL U2 firmware update address

[zzmakii]

New stock firmware for MK812A (version with bluetooth, WiFi chip MTK5931),

http://pan.baidu.com/share/link?uk=3492839855&shareid=4083892772

Not yet tested.

[zzmakii]

There is no information on manufacturers site, but it seems there is NEW version v0.2 of DOOBOL U2, this time WITH bluetooth, for all products manufactured after September 1st.
This version seems to have another WiFi chip (NOT the old one MTK5931), but it is unclear yet which one.
There is already new stock firmware for it

http://pan.baidu.com/share/link?uk=3492839855&shareid=3763618075

Warning: Do NOT flash old versions (MK812A and DOOBOL_U2_v0.1) with this firmware!

[postalagos]

Please see my previous post :

> repeat your update process
I can NOT do it, PC is not recognizing device any more !
So can NOT update with this or any other firmware.

I have now bricked device which displays running android logo forever.

Not wanting to offence you, but from your first post in this thread I see you are from
customer service department. Please ask some of your technical guru what I have to do.
Please help.

turn off device then connect device to PC and press and hold RESET button then press power button and hold it too after PC send signal that new device is founв - release buttons.

[zzmakii]

Thanks for trying to help, but if you look at the date of previous posts, you'll see that the problem existed many months ago.
Since then, I have found a way to unbrick my device by shorting pins on NAND chip, and flashed it with factory firmware.