Unbrick or fix NAND on the MK808

[nipun]

For SDTNQGAMA-008G 5&6 pin on right side of chip are TF-BOOT Pins. I have it in my Nextbook NEXT7D12R with Amlogic AML 8726-mx.

[ATTACH=CONFIG]3068[/ATTACH]

how fix sk hynix chip

[gpharos]

Reset nand chip help for mask rom mode on new mk808b with mediatek chipset

OK, I did a stupid thing and ordered an original mk808b, which like some others in here I received the HTC -T011-V4 under heatsink and TEAN E120039-94V-0ML1 on edge of pcb.

My problem is I flashed Bob's 1.7 for the mk808b and everything went fine as far as the flash but all I got was the black screen and it never came back. When I try and flash a new rom from the 3-4 roms posted here in the forums including the KitKat Rom I get the dreaded IDB download failed message. Now I backed up my original ROM based on Bob's write up on using the Rockchip Android Tool V2.1 to make backups. My IDB failing looks like it is coming from not having a valid Loader.bin and according to Bob's instructions it stated "Loader.bin - this is low in NAND and special. You can flash it but cannot dump it."

I can restore all the backup files I copied except the Loader of course and with different files I can either get the two penguins or the green Android guy with yellows atoms in his body (only for one second and then it reboots again into a reboot loop) just like resetting firmware back to factory from the settings menu. So I guess I need to get into masked Rom mode so I can use let's say the kitkat 4.4 img file.

So following his instructions on shorting pins 8 and 9 to get into masked rom mode and I wasn't getting anywhere so I decided to pull off the heatsink and look at the chipsets. The nand chip number is NT5CB256M16CP-D1 (there are two of them) from Nanya corp. Attached is the PDF on the chipset and I am trying to figure out which pins to short ( looks like pin 2 is reset) so any help would be appreciated. Ops, file to large for attachment so I'll post a link to the file. Nanya chipset is NT5CB256M16CP-D1.

http://www.datasheets360.com/pdf/-1165676907033186663

EDIT: OK, screwed up again. The above info is for the DDR3 Dram, that is why there was two banks. I initially was trying to short pins 8&9 on the DRAM! I saw the chip on the bottom of the PCB and it was labeled Sandisk SDTNQGAMA-008G, so I thought that was the Dram. Wrong, it is the nand, so with a needle and magnifying glass I was able to successfully short pins 8&9. Anyone else that has this setup, the Sandisk chip has a circular indentation on the chip that denotes pin 1. I also needed a needle to penetrate the protective coating on the board that was done after they built it. Took time, patience and steady hands to get it into ROM masked mode. I have now flashed mk808b_clone_Kernel_3.0.36+ #1004 original with the provided ROM_Flash_Tool_137 and my MK808B clone is working perfectly. Now on to root the device and I will be extremely pleased.

[pibepibe]

I have done everything

All started when I tried to flash the Finless 2.1 into my rockchip with the RKAndroidTools.
I have done everything to unbrick my MK808, but always I get the message "RKAndroid MaskRom Usb found" at the RKAndroid tools. I've been able to Erase NAND succefully, but when I push "Flash ROM" always says "Download IDB failed". I've tried with the Rockchip Batch Tool too, but it always says "Prepare IDB failed" (the square is blue).
It doesn't matter if I make contact with the pins 8 and 9 when I connect it, those two errors always occur.
In less words:
If I connect the RK3066 to the RKAndroid tools, I always get the "Download IDB failed".
If I connect the RK3066 to the Rockchip Batch tools, I always get the "Prepare IDB failed".

Also, I've tried to put the original Firmware of the device, but I get the same result.

Sorry for my english, isn't my native language.

[ShayC]

MK808B Plus, no power

Hi,

I got an MK808B Plus from here http://www.gearbest.com/tv-box/pp_124593.html
It worked fine out of the box
I then tried to flash it using the sd card, hold down the reset button method
The Google TV logo would flash and as soon as I lifted the reset button, it would boot as normal without updating.
I left it over night and when I went back to it yesterday it won't boot.
I'm not getting any blue light.
I've again tried the reset while plugging in to otg to usb but nothing

I'm new to this so I'm assuming this is bricked?
I don't understand how this happened as it was working fine when I left it but anyways.

Would this method be appropriate?

thanks

[phinc]

Bricked flasing rom, have green status light in batchtools it goes into recovery without need to push reset buttonwhen plugged into otg, every rom faills to flash , I need to get it into MASK ROM mode to flash Nand chip, model Skhynix unsure if I short PIN 8 and 9 or shortpin 9 and 10 unable too find any info on this board. I have another stick same model only images work are T011 images. Unabe to obtain original stock image from seller. Anyone with stock image or any images for this model? also any help in putting this device into mask mode or flashing SD METHOD.
Anyone have this image MK808B T011_public_8723_20140911_V4.4.img

Looks like you have the same NAND chip as shown in the first post. So pin 8 and 9 should be fine.

[Akure]

NEW MK808B REALTEK HTC-T011-V4

Bricked flasing rom, have green status light in batchtools it goes into recovery without need to push reset buttonwhen plugged into otg, every rom faills to flash , I need to get it into MASK ROM mode to flash Nand chip, model Skhynix unsure if I short PIN 8 and 9 or shortpin 9 and 10 unable too find any info on this board. I have another stick same model only images work are T011 images. Unabe to obtain original stock image from seller. Anyone with stock image or any images for this model? also any help in putting this device into mask mode or flashing SD METHOD.
Anyone have this image MK808B T011_public_8723_20140911_V4.4.img

[Medniy]

Need help No drivers installed

Hi everyone ! I don't have drivers loaded on my PC so I can't connect my MK808b to it. As far as I understand to install drivers one need to connect the device in flash mode first, but mine is bricked... Is there any other way to install the driver on PC without using flash mode ? Thanks forward for any reply. )

I got MK808b bricked while trying to flash it with one of ROMs when the electricity in my house went down so I must be the lucky dog ) When trying to connect it to my PC nothing happens, even the blue light does not turn on. I have tried to get it into mask mode some time before but either I did something wrong or NAND is dead. Now I have a new PC and wanna give it a last try before I buy a new device.

[prahjister]

What is the model of the deviec

http://www.freaktab.com/showthread.php?3880-MK808B-clones-how-to-identify-them

Read trough this thread. to see if it helps.

[RK the Builder]

You probably need to identify you device. Which WiFi chip set you are using?

Not sure what you are asking, but it says Rockchip RK3066.

[prahjister]

What an awesome site! While trying to upgrade my MK808B with the Finless ROM it bricked. Not sure why, mainly because I'm not very technically savvy. But that said, I used the method described in this thread and got it reset and was able to flash the rom, however, on reboot all I get is two penguins on the screen for a couple of minutes. Any suggestions on where to go next would be very appreciated. Thank you!!!

You probably need to identify you device. Which WiFi chip set you are using?

[RK the Builder]

Unbricked android - but doesnt boot properly

What an awesome site! While trying to upgrade my MK808B with the Finless ROM it bricked. Not sure why, mainly because I'm not very technically savvy. But that said, I used the method described in this thread and got it reset and was able to flash the rom, however, on reboot all I get is two penguins on the screen for a couple of minutes. Any suggestions on where to go next would be very appreciated. Thank you!!!

[phinc]

Hello everyone


First I want to thank all of you for maintaining this site as one of the best when it comes to android smart devices.
My problem is as follows.


I have MK908/2 Rockchip3188
I wanted to update the kernel from 720p to 1080p. Something went wrong and now I can not flash any of firmvire because it is stuck in a bootloop. Every time I flash the firmware it says success, everything went well.
Then I connect my MK908/2 on my TV and stuck in bootloop recovery says something about device not found format data format cache rebooting.

Please help.

Sounds like you try to flash the wrong firmware. But this is the rk3066 sub-forum. Visit the RK3188 sub-forum for help with your device.

[anonymvs]

My MK908II - boot loop / recovery

Hello everyone


First I want to thank all of you for maintaining this site as one of the best when it comes to android smart devices.
My problem is as follows.


I have MK908/2 Rockchip3188
I wanted to update the kernel from 720p to 1080p. Something went wrong and now I can not flash any of firmvire because it is stuck in a bootloop. Every time I flash the firmware it says success, everything went well.
Then I connect my MK908/2 on my TV and stuck in bootloop recovery says something about device not found format data format cache rebooting.

Please help.

[Hyperium]

I have a faulty USB OTG cable that is loose and unfortunately it popped out during a format and because of that it bricked my MK808B... but thankfully I found this post and I must say... Thank you!! You literally saved my device and a bit of my sanity ha.

[revbobdobbs]

Thank you, this worked.

Finless (Bob),

Thank you, this worked.

Briefly shorting pins 8 (RE#: Read enable) and 9 (CE#: Chip Enable) on my SPECTEK PFB15 8GB NAND chip while connecting the OTG port allowed MaskROM Mode so I was able to clear the IDB and flash a working firmware. Phew!

Thanks again.

p.s. I used this Micron NAND Specification document for reference, since I couldn't find one for SPECTEK.