Unbrick or fix NAND on the MK808

[kriss_261]

kriss_261, give us more information.
Are you sure your unit is MK808B ?
Wich firmware did you use ?

Hi , i pretty sure it is MK808B , i see on the board "MK808B V1.0 2012.10.24" and chip RK903 TOC B OR 8007 1249 (this is write on a metal cover on the chip).
I try to flash with firmware "ICS_mod_by_lewy20041 V1.0.8 1080p" and after low level format and IDS i get the error in this line :
17:56:19 339 <Layer 1-1-5> Download Firmware Start
17:56:27 796 <LAYER 1-1-5> ERROR:RKA_File_Download-->RKU_WriteLBA failed,Written(39845888),RetCode(-5)
17:56:27 798 <LAYER 1-1-5> ERRORownloadImage-->RKA_File_Download failed(system)
17:56:27 805 <Layer 1-1-5> Download Firmware Fail
17:56:27 812 **********Restore Done Success<0> Fail<1> Time<38033>ms**********

and after i dissconect i try to flash with version 1,7 Finless BUT my MK is not recognized now by my laptop .

[diniscampos]

Hi , i pretty sure it is MK808B , i see on the board "MK808B V1.0 2012.10.24" and chip RK903 TOC B OR 8007 1249 (this is write on a metal cover on the chip).
I try to flash with firmware "ICS_mod_by_lewy20041 V1.0.8 1080p" and after low level format and IDS i get the error in this line :
17:56:19 339 <Layer 1-1-5> Download Firmware Start
17:56:27 796 <LAYER 1-1-5> ERROR:RKA_File_Download-->RKU_WriteLBA failed,Written(39845888),RetCode(-5)
17:56:27 798 <LAYER 1-1-5> ERRORownloadImage-->RKA_File_Download failed(system)
17:56:27 805 <Layer 1-1-5> Download Firmware Fail
17:56:27 812 **********Restore Done Success<0> Fail<1> Time<38033>ms**********

and after i dissconect i try to flash with version 1,7 Finless BUT my MK is not recognized now by my laptop .

did you short pins 8 and 9 like first message of this topic ?

[leolas]

Hi , i pretty sure it is MK808B , i see on the board "MK808B V1.0 2012.10.24" and chip RK903 TOC B OR 8007 1249 (this is write on a metal cover on the chip).
I try to flash with firmware "ICS_mod_by_lewy20041 V1.0.8 1080p" and after low level format and IDS i get the error in this line :
17:56:19 339 <Layer 1-1-5> Download Firmware Start
17:56:27 796 <LAYER 1-1-5> ERROR:RKA_File_Download-->RKU_WriteLBA failed,Written(39845888),RetCode(-5)
17:56:27 798 <LAYER 1-1-5> ERRORownloadImage-->RKA_File_Download failed(system)
17:56:27 805 <Layer 1-1-5> Download Firmware Fail
17:56:27 812 **********Restore Done Success<0> Fail<1> Time<38033>ms**********

and after i dissconect i try to flash with version 1,7 Finless BUT my MK is not recognized now by my laptop .

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.

[niabi]

cracked a solder joint I bet as the stick is dead I have a little proposition for you , why not have a go at baking it in the oven (crazy? maybe) I fixed an old graphics card that way when I over tightend a new cooler and screwed the card up it worked could not believe my eyes when the pc booted up, as long as you follow the google instructions you can find all over the web first google http://voices.yahoo.com/how-reflow-l...n-6784790.html .

in my case I already trashed mine, it was painful to just watch it there not working maybe I should have tried what you posted, but its too late for me now

[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...

[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 .

[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]

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" .

[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]

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.

[.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!

[leolas]

Re: Unbrick or fix NAND on the MK808

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

[.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

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

[.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