[Hardware Hacking General] no_spam_for_me:
Hello,

there is a new board label "HD18 v2.22" at the market. It looks like the known "HD18 v2.2" (detachable wifi antenna cable connector) and "HD18 v2.21" (not detachable wifi antenna cable), the only thinks that are different

- there is a little bit bigger headsink witch is 45° rotated (covers the NAND a little bit) and is fixed to the board with two plastic pins/sticks

(- there are more louver at the bottom of the case)

More I can not say at first stepp, because I've received a defective device.

No Signal at HDMI or AV.

The only think that works is that the color of the light will toggle between blue and red by using the red RC power-button.

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Hello,

one step further: the A/V cable delivered with the device is damage!

(PS: there was a plastic selvage at the pin, so I can't put the pin deep enough into the hole; I've cut it with a knife, now the cable works)

Now I try another cable and get A/V out. But HDMI don't work furthermore, not at my TV.

At my TV I try every display resolution in the android, that is possible, but no output, only "no signal"...

One or two times at my many many trey after startup to plug the HDMI parallel to the A/V into the box, I got a videoout at HDMI, but the system freez at that moment...

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System

a) not rooted

b) Settings -> System -> About MediaBox

Model number: MBX reference board (g18ref)
Android version: 4.2.2
Kernel version: 3.0.50 / ubuntu@ubuntu-desktop #4 / Sat Jun 29 10:13:43 CST 2013
Build number: JDQ39.20130629

SSHelper

[@localhost /data/data/com.arachnoid.sshelper/home ]$ cat /proc/mtd

dev: size erasesize name
mtd0: 00800000 00200000 "bootloader"
mtd1: 00400000 00200000 "ubootenv"
mtd2: 00800000 00200000 "logo"
mtd3: 00800000 00200000 "aml_logo"
mtd4: 00800000 00200000 "recovery"
mtd5: 00800000 00200000 "boot"
mtd6: 40600000 00200000 "system"
mtd7: 20000000 00200000 "cache"
mtd8: 10000000 00200000 "backup"
mtd9: 18c600000 00200000 "userdata"

http://xdaforums.com/showpost.php?p=46059326&postcount=158 ????

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This device really sucks me out...

It seems so, that it only doesn't work at my TV (WUXGA 1920 x 1080).

At a monitor (1280 x 1024) with 720, at two HDready TV and another fullHD TV it works fine via HDMI....

I also try a HDMI-Splitter (v1.4)... I get a lighting InPut LED at the splitter until I connect the splitter-OutPut with my TV, then the InPut LED stops to light (output LED is lighting)...

(BTW: onetime at the beginning of my many trys with the spillter, I got a signal to my TV, but it wasn't reproducible???)

My notebook, SAT-receiver and a RK3188-box works fine with my TV...

Than I found out, at the toothpick method, there isn't any output via AV...

(opening the device and pressing the little switch)

Know I don't really know, whether a bootable SD-card (using DD or SDTools or the Matricom recovery SD respectively the merge by BenniBenassi-solution) is helpful, because I think it's a generally problem of the output-possibility of the recovery and I don't know, whether it is possible to use a choice with the knowing recovery.img like here

I found any way out, how to root the existing installed android...

Perhaps

http://xdaforums.com/showthread.php?t=2146226

http://tabletrepublic.com/forum/and...how-root-any-aml-8726-based-mini-pc-3449.html

BUT without any output, so I can forget it...

And don't found any exploit like this ...

I want to root it, because of the possibility to use

- dmesg

- cat log (whichever)

:

And last but not least, the "cat /proc/mtd" output I found at my device don't compare to the standard output flying around in the I-Net, so I don't really sure that I can reflash my box with the g-box MX2 FW...

I thinking about it, perhaps it isn't a HW problem/incompatibility with my TV, because it seems so the actually installed FW have some bugs (because in Settings for example, if I move trough the sections, the background colure sometimes still is blue and not grey when I leave that point... on the other hand perhaps it's "normal")

Greetings