MK809III B Quad-Core Loop Boot

[Zorbitos]

My MK809III B (buy on DX) have some trouble. With the original ROM, i had a lot of freeze, crash which seems to occurs randomly.
Because of that, i've decided to flash using some other ROM (i tried a lot of them using MK809III). With all ROM, my device boot and reboot. It seems to be locked in a infinite loop. The flash seems to work well because depending on the ROM the initial screen change.
I don't have the original ROM and ask for your help. If any have an idea to solve the problem or have the original ROM which will be better than having just a blank stick tv key.

[duartev]

I have exactly the same problem

[fpmarc]

I'm also having the same problem, that's the version I bought at dx.com http://www.dx.com/p/mk809-iii-b-quad...h-black-217396


My MK809iii work well, but had no root access.



Attempting to install the NeoMode-ROM caused this crash. help.


If this helps, I have pictures of PCI and chips

[fpmarc]

This are the photos

[duartev]

mine is just this one, I managed to install a new firmware but still reboot loop

This are the photos

[fpmarc]

I've tried many firmwares, after the last attempt with the MK809III firmware - KitKat 4.4 - SMIC717394 ---- 1080p ROM, the device no longer sends signal to HDMI.

[fpmarc]

Hello friends, our colleague forum sawbones999 released a ROM that worked to recover my MK809.

https://yadi.sk/d/kw9BKrrFdZhWE

Now I'm trying to find a technique to release the root access this ROM to finally install DroidMote and other apps. If please get let me know.

[duartev]

works.... great

Hello friends, our colleague forum sawbones999 released a ROM that worked to recover my MK809.

https://yadi.sk/d/kw9BKrrFdZhWE

Now I'm trying to find a technique to release the root access this ROM to finally install DroidMote and other apps. If please get let me know.

it works.... great

[fpmarc]

it works.... great

Now we need root access!

[methead]

try this rom
https://yadi.sk/d/FayCimcre7QGC

root via Kingo Root

[Zorbitos]

After a lot of new try, the result is almost the same. With the rom you provide, i was thinking "Yes it will work" but no luck for me. The key boot and indicate that some android application are uprading and reboot and then it seems to get stuck on android screen. I suppose my device have an other problem. With the original rom, it was not really working (a lot of random reboot, not really useable)
I have also a V5_1. If one day someone upload the original stock rom, i will try again.

Anyway thanks all for your help !

[methead]

try this

https://yadi.sk/d/PXk1pbHudZkpj

or this

https://yadi.sk/d/tl_woGeEdULE8

[fpmarc]

Something I found in my MK809 is that even though you select the screen resolution in the configuration menu at 1080p (1920x1080-60hz), to run programs as CPUZ it is still identified as 1280x720 (720p) the same happens in programs such as you tube where maximum resolution supported is 720p. Do you know any solution to this problem?

[Zorbitos]

I try with the two roms but no change for me. Thanks.

[Zorbitos]

It finally works for me using the https://yadi.sk/d/oLLygFotdc6K3 with the link for cyxtech_rk31_809iii_8723bs_141216_4.4_8g1g.img. I have a 2g version yet...

But unluckily i think my device has a hardware problem. I have a lot of randrom freeze and my device get stuck.