Unbrick or fix NAND on the MK808

[.ed]

Tell us if it works or not please.

Got my new cable, tried it, and it works!!!
Thanks so much for your fast help!

[leolas]

Re: Unbrick or fix NAND on the MK808

Ok I ordered a new HDMI cable. Hopefully I can test tomorrow. Tnx.

Tell us if it works or not please.

[.ed]

Then or hdmi cable or hdmi plug I think, no errors when flased=nand ok, but anyway try to flash and wait some minutes to unplug the otg port, and try again, is plugged the hdmi while is flashed?, after flash the device must reboot automatically, and some times unplugg the device fast cause bootloop, but I think then you must see the bootlogo, but anyway is something more to test, sorry no more ideas for now.

Ok I ordered a new HDMI cable. Hopefully I can test tomorrow. Tnx.

[leolas]

Re: Unbrick or fix NAND on the MK808

Then or hdmi cable or hdmi plug I think, no errors when flased=nand ok, but anyway try to flash and wait some minutes to unplug the otg port, and try again, is plugged the hdmi while is flashed?, after flash the device must reboot automatically, and some times unplugg the device fast cause bootloop, but I think then you must see the bootlogo, but anyway is something more to test, sorry no more ideas for now.

[.ed]

Try too to power the device from the computer if you can. Or frm other powet supply.

Yep, tried various cables and sources, also laptop. It makes no difference.

Btw, the TV does see whether the MK808 is powered:
MK808 not powered: TV says: no device connected
MK808 powered: TV says: no signal

[leolas]

Re: Unbrick or fix NAND on the MK808

Try too to power the device from the computer if you can. Or frm other powet supply.

[.ed]

Change HDMI wire, try it in other tv if you can.

I tried on another TV. No change. I'll look around for a replacement HDMI cable and report back. Tnx

[leolas]

Re: Unbrick or fix NAND on the MK808

Change HDMI wire, try it in other tv if you can.

[.ed]

Hi all.

I'm having a non working MK808B also, unfortunately. A few weeks ago, I flashed a FinLess rom, and after that it booted well. I played around with it for a day. The next day, it did not work anymore. It does not boot, but the blue light does appear tho.

I tried with various cables / power, but no difference.
After that I used the 8-9 pin trick to be able to try other roms. Also the original roms. Flashing works fine; no errors like others here sometimes report. But still I only get the blue light, but no output.

Anyone have a suggestion?

Tnx!

[kriss_261]

Kriss,
OS and USB type ?
Using a USB hub ?

WIN 7 64bit , USB 2.0 , i using notebook SAMSUNG RC-520 - S01 PL.
other devices works great on this USB PORT , also other 3 USB ports cannot recognize the device.
I`m not using any USB HUB.

[diniscampos]

ok , i try with pins 8 i 9 and windows detect UNKNOWN DEVICE cannot install drivers only in device manager shortly show up Unknown Device and dissapear . how to manually install drivers for MK ?
Windows shows "cannot recognize usb device" .

Kriss,
OS and USB type ?
Using a USB hub ?

[kriss_261]

Windows not detect the stick.I push the reset like you wrote but nothing happend.
I didn`t yet try with pins 8 i 9 . Try tomorrow .

ok , i try with pins 8 i 9 and windows detect UNKNOWN DEVICE cannot install drivers only in device manager shortly show up Unknown Device and dissapear . how to manually install drivers for MK ?
Windows shows "cannot recognize usb device" .

[rel5s5]

I have the same problem with my MK802III S
No signal on HDMI output (even booth screen),no stick detected when i conect to pc,etc.etc.
Only blue light....

[kriss_261]

Ok before try to enter in mask mode you must try to push the reset button and while it is pressed conect the usb to the OTG port. look at device manager if it found a new device. tell me if windows detect the stick.

Windows not detect the stick.I push the reset like you wrote but nothing happend.
I didn`t yet try with pins 8 i 9 . Try tomorrow .

[niabi]

I flash roms many times a day as you may know.
This started happening to me recently. I thought my nand chip went bad but in fact I wore out the cheap connector pins on my USB cable. Got a new nice cable and no longer got the verification errors.

Also just to add, noise from your tv can cause failures like this so try to keep the cable away from your tv and for sure do not try to power the stick from your tv.

finally just because the verify failed does not mean the flash was bad. unplug it and pllug it in and it may boot fine anyway. Although I know it is not a good feeling to have a failed verify.

Bob

I tried that, but the problem is the verification failed everytime, and everytime the stick would stay in flash mode (or mask mode) so, no blue led, ever...