Unbrick or fix NAND on the MK808

[estrika]

I can only get it recognized in to mask mode. Then it refuses to flash: "IDB erase failed" sort of errors. It seems it's a communication issue or related. With rkflash (Linux) it read just 0s and spit errors.

As for reading/flashing the NAND with external prog, the setup would cost me more than it worths (I guess).

I don't want to risk damaging it if it is to be sent back. In fact, if I'd done something to damage it I wouldnt be comfortable sending it back.

Right now I can afford another month or so to get other unit.

how many flashs have you done before this error?
can you give your nand flash reference?

[l0ur3nz0]

Just flashed once (1)!! But I must say the unit acted strangely before the flashing: first it didn't want to boot, had to use an different charger but afterwards the one that came was ok; then it was only detected by the pc in flash (or recovery) mode, now only in mask mode.

It may be the locked bootloader issue that finless bob says is affecting the clone units, which is strange 'cause I've bought it from an official (?) rep.

I haven't taken the heat sink off the SOC and the NAND is beneath it.

[estrika]

Just flashed once (1)!! But I must say the unit acted strangely before the flashing: first it didn't want to boot, had to use an different charger but afterwards the one that came was ok; then it was only detected by the pc in flash (or recovery) mode, now only in mask mode.

It may be the locked bootloader issue that finless bob says is affecting the clone units, which is strange 'cause I've bought it from an official (?) rep.

I haven't taken the heat sink off the SOC and the NAND is beneath it.

yes there are some mk808 clones with bootloader locked, but you are saying that unit acted strangely before you even flash right, the story of not booting and even only be detected in recovery was it stock flash right?
first flash you have done was in recovery mode or mask mode?
what i understand of your info is that you already had a problem before flashing, for me i would do a thermal fix, just in case, and after a stock firmware flash if possible, you risk nothing if well done, and you already removed the heat sink, so give some heat to soc nand and ram, let it cool, see if connections to usb port are well soldered, then test flashing, if no go, send it to supplier, or hardware flash the nand, this way you will know that nand is good or not.
send my the nand reference i will look the datasheet for more info.
normally even nands with bootloader locked can be unlocked, but needs hardware flash.

P.S. mete essa merda a torrar...

[l0ur3nz0]

[...]

P.S. mete essa merda a torrar...

LOL

Yes I could only flash - the first and only time - via recovery (NOT Mask Mode).

Believe me, if I haven't contacted the seller and he wasn't willing to trade it for another it would be burning right now!

I have done something similar to a optimus Black with a no service issue (but no go though)

But as they said they could send me a new one so I'm not messing with the hardware.

[diniscampos]

At this time, my stick is flying over the seas to Finless's home...
I received from China and now is flying to USA.
It's kind of world tour....LOL

[darkenpt]

Help please

Hi all,

Fist of all I would like to tank you for the participation on this great forum, I learnt a lot with you guys

Now, I am sorry if anyone already make this question but... unfortunately in the process of building a new home for my MK808 (make a new case with power supply and USB hub inside) I think that probably I briked it :|

I have tried to put the MK808 in MASK ROM mode but with no luck, what else can I try? it helps if I solder some wires to the "JTAG" interface of the MK808 and see if I get something?

like this:

http://www.omegamoon.com/blog/index.php?m=01&y=13&d=13&entry=entry130113-161359

or there are other way?

Thanks in advance

[diniscampos]

HI darkenpt,

Be more specific.
Show all the steps you did to put the stick in mask mode, and the error step.
DC

[darkenpt]

HI darkenpt,

Be more specific.
Show all the steps you did to put the stick in mask mode, and the error step.
DC

I I shorted the pins 8 & 9 of the NAND chip, connected USB cable to the OTG USB port and nothing.. MY PC does not recognise the MK808. I have installed the drivers before I briked de Mk808 so I think that is not the problem.

Thanks

[fratello]

Try to change the USB cable, the USB port, even the PC ...Use always one "true" USB port (located on MB, not in front of PC case). Good luck !

[ALSINJAN]

My RK808 (purchased in DX.com) has worked well with Fitness 1.6 ROM until yesterday.
I turned it off normally and on again: black screen. Blue LED on. I flashed back to Rom Fitness 1.6 (zero errors) but without result: black screen.
What do you suggest I use?:
- Flashing back to original ROM.
- Flashing back to stock ROM.
- Use the method of pins 8 & 9.

Help me.

[l0ur3nz0]

Your MK808 seems to be fine. Just try it with other PSU (2A) and wiggle the HDMI cable. You can also try other TVs. If this doesn't work, go back to the original ROM or other custom ROM.

[ALSINJAN]

Your MK808 seems to be fine. Just try it with other PSU (2A) and wiggle the HDMI cable. You can also try other TVs. If this doesn't work, go back to the original ROM or other custom ROM.

Thanks for your answer, but my PSU is 2A and the HDMI cable and the TV are the same as when it worked.

Edit: My problem has been resolved by disconnecting the USB Hub. Everything returns to normal operation.
Thanks for your help.

[l0ur3nz0]

Thanks for your answer, but my PSU is 2A and the HDMI cable and the TV are the same as when it worked.

Edit: My problem has been resolved by disconnecting the USB Hub. Everything returns to normal operation.
Thanks for your help.

I told you yours was still fine...

[ALSINJAN]

I found that the problem lies in the HDMI from my TV.
If anyone is interested, see the link below:

http://armtvtech.com/armtvtechforum/viewtopic.php?f=6&t=141&p=10157&sid=22b40fed43c6b0196578e49e92e6b59d#p10157

Maybe someone can help ...

[mpekv]

Need help with serial connection

Hi again,

I finally got my USB to RS232 converter and I connected it to designated pins on board as stated in blog:

http://www.omegamoon.com/blog/index.php?m=01&y=13&d=13&entry=entry130113-161359

But when I start putty and powered device, all I see in putty is:

DDR Version 1.00 20120529
In
Unkown Device
ERR

Is this mean that my mk808 has dead memory, or I missing something else? Is there anything else that I can do with this serial connection?

Thanks and best regards