Unbrick or fix NAND on the MK808

[leolas]

Re: NEW - Unbrick or fix NAND on the MK808

Finless, you're GOD, thank you sooo much!! With your guide, I've sucessfully resurected my Rikomagic MK802 IIIS 8GB (no BT) and I can confirm, that this trick with shortening pins 8 and 9 works on this model, so you can update thread's title. Only one notice: Mask mode don't work on Win8, but no problem on Win7.

Again, thank you milion times and keep your great work!

Thanks for your report, people like you give us information that we can retrieve in other way, we can't get all devices, so a lot of times your reports give us and all user useful information.

[ShaWn]

Here you are MK802 IIIS underhood. It has little bit different NAND chip than MK808, but fortunately same manufacturer and series Good luck for all unbrickers!

[leolas]

Re: NEW - Unbrick or fix NAND on the MK808

Here you are MK802 IIIS underhood. It has little bit different NAND chip than MK808, but fortunately same manufacturer and series Good luck for all unbrickers!

Thanks again this post will be useful for a lot of people:thumbup:

[zaqx]

any help to my 808B ?

Hello,
I had succesfully installed a few images before..
Today while i try to flash sw , I have bricked my MK808B..
[ATTACH]1904[/ATTACH]

I have tried 8+9 MAskROm method... No Luck...

I have attached my log files...

Could you please help me?

Any help Please ?

[niabi]

well, I will join the club of the bricked mk808

Tried everything on this thread but still no go.

the difference is I think I fried my NAND by mistake, I did a cooling mod, and it worked perfectly, the unit has never run as cool as it did, but I think I either did one or 2 things wrong:

1.- put to much pressure on the heat sink I installed and by mistake I damaged the NAND as I see the factory heat sink does not touch the NAND and I think by the pressure I made it touch, and it probably screwed something
2.- I forgot to put the governor back to interactive after a benchmark, so it ran at 1.46 all night

next morning after watching movies/videos and doing some web browsing the keyboard was partially non respondent so I decides to reboot the unit, and that was the end of it.

I tried to erase the NAND it did it with no problems, tried to write the ROM, did it successfully but when it starts to check the download data it always fails.

so I went into mask mode by shorting pins 8&9, same exact result.

something to note is that the check always seems to fail at different parts (sometimes at 50k, others at 100k, and others even at 1000k it seems random)

sometimes I get "Download IDB Fail" on a first attempt, but if I try some more, it goes into writing the rom

so I am guessing my nand is FUBAR, I've tried 4 different cables, on 2 different Pc's on every USB port available, same exact problem.

I am attaching my log, but I don't think it will do any difference, but if anyone can check it and at least confirm this is dead, I can start ordering a new one as I am now in LOVE with this android stick :P

Log2013-04-02.txt

[niabi]

well, what do you know I managed to get my mk808 flashed again...

after trying about 100 times one of those times it worked..., but I did something different I took away the heat sink, then put the mk808 in mask mode, and since I had to go eat, I just left it there... I came back about 20 minutes later, then hit flash, and it worked, no errors, my MK808 is working right now, but I am afraid to re-flash it again to test it

anyways you guys might want to try that, I have no idea if it was just luck or did something happened in those 20 minutes in mask mode

EDIT: as I suspected, device died again after reboot

[[email protected]]

MK808 fix worked!!!

Thanks for you all for giving this information...

First I failed to flash 4.2.2 rom and got NAND erasing error... my MK808 was bicked.

I tryed everything (pin 8/9 method) with no success but after some testing I figure out that problem that caused my MK808 to brick was the USB cable.

So with a new USB cable (mine have some ferrite stablizer) all worked ok and my MK808 lives again

The cable that worked for me is like this one: http://www.mobilitysite.com/wp-conte...-cable-end.jpg

António
Portugal

[joe9003]

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 .

[aw079]

MK809 T002

I tried to erase the NAND it did it with no problems, tried to write the ROM, did it successfully but when it starts to check the download data it always fails.

[ATTACH]1941[/ATTACH]

I am also currently experiencing the same problems, but on the MK809 T002, I short pins 6-7 instead [as per instructions on MK809.com]

I have re-tried numoerous times, and notice that for me, it always fails at the same point around 180k.

Left it overnight, still no joy
Logs:

https://docs.google.com/file/d/0Bxdl...it?usp=sharing

https://docs.google.com/file/d/0Bxdl...it?usp=sharing

[diniscampos]

Don't forget to wait about 10 minutes between flash and test results.
This is very important because after flash the system still applying the firmware.

[aw079]

Don't forget to wait about 10 minutes between flash and test results.
This is very important because after flash the system still applying the firmware.

The check or verification stage in which both the niabi and I are referring to is applied straight after the software is downloaded onto the flash memory chip, WITHIN the flash utility programme.

[Finless]

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

[kriss_261]

Hi today I have bricked my MK808B (RK 903 CHIP), i try flashed with a new software but i get error .
Today i plug my stick into a tv and the blue led doesn`t light , on TV screen nothing to see , even android ,so i connect to my PC and start flash but it doesn`t finish I get error and after this i can`t go in flash mode . My MK is not recognize by PC , nothing happend if i connect to USB. Earlier if i connect i see the connected device but now nothing . USB i check , cable to , other devices on this USB port work perfectly. Please someone give me a advice , what can i do ?
Bob can you look at my log please ?

ps.sorry for my languaage

[aw079]

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

Thanks for your suggestion. Yeah, I had previously thought so too, so after each flash despite error I plugged to TV only to get pengiunes...tried three other cables, no joy.

I think its dead.

Hi today I have bricked my MK808B (RK 903 CHIP), i try flashed with a new software but i get error .
Today i plug my stick into a tv and the blue led doesn`t light , on TV screen nothing to see , even android ,so i connect to my PC and start flash but it doesn`t finish I get error and after this i can`t go in flash mode . My MK is not recognize by PC , nothing happend if i connect to USB. Earlier if i connect i see the connected device but now nothing . USB i check , cable to , other devices on this USB port work perfectly. Please someone give me a advice , what can i do ?
Bob can you look at my log please ?

ps.sorry for my languaage

I know the feeling my friend, saw you log, it seems yours does not even copy data to nand flash.
Mine does, but due to non verification, perhaps it misses a last stage to close off the procedure, so again disappointment. I just hope you have more luck than I did.

[diniscampos]

Hi today I have bricked my MK808B (RK 903 CHIP), i try flashed with a new software but i get error .
Today i plug my stick into a tv and the blue led doesn`t light , on TV screen nothing to see , even android ,so i connect to my PC and start flash but it doesn`t finish I get error and after this i can`t go in flash mode . My MK is not recognize by PC , nothing happend if i connect to USB. Earlier if i connect i see the connected device but now nothing . USB i check , cable to , other devices on this USB port work perfectly. Please someone give me a advice , what can i do ?
Bob can you look at my log please ?

ps.sorry for my languaage

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