T-R42/ MK888B/ CS918 with bluetooth

[Guest]

I bought it as a cs918. What is this actually? No sticker on the bottom.

[vicolodo]

help

Hello,
my T-R42 with stock rom has shut down definitively...

Normally i keep it in operation (was about a week i didn't turn off it)
today i found it powered off,
and when i try to power on it pressing the button,
the button light stays on for a few seconds, then it (and the device) turns off

HELP! what can be happened?
How can i resuscitate my T-R42?

[harris]

Hello,
my T-R42 with stock rom has shut down definitively...

Normally i keep it in operation (was about a week i didn't turn off it)
today i found it powered off,
and when i try to power on it pressing the button,
the button light stays on for a few seconds, then it (and the device) turns off

HELP! what can be happened?
How can i resuscitate my T-R42?

use RKBatchTool--1.7.exe
use a full rom working

you have the reflash and push the button reset and power on about 30 seconds + -
be sure to press the two buttons. All time !!!

1.- open program and load rom

2.- press restore button in program (no release)

3.- wait ....about 30 seconds

4.-Now you can stop pressing

you work?

[vicolodo]

use RKBatchTool--1.7.exe
use a full rom working with restore button

you have the reflash and push the button reset and power on 30 seconds about
be sure to press the two buttons.
Press all the time 30 seconds about


begin to flash
Now you can stop pressing
you work?

Hello,
thank you, i will try your solution...and let you know if it works
(did you have the same problem?)

A different solution has been suggested me by another user

http://www.freaktab.com/showthread.php?9854-T-R42-starts-for-a-few-seconds-then-shuts-down-Bad-power-adapter

he suggest to change the power adapter

but before i will try your solution , because cheaper

I already tried to re-flash the tv box, but perhaps in the wrong way:

Yesterday night i connected the tv box to my pc via otg cable.
When connected to the pc via otg, the light stays on.
Connecting the usb cable to the pc,
and pushing the reset button under the tv box, my pc detects rk31sdk device,
then asks to install drivers for it
Choosing automatic search of drivers, my
pc find drivers for 'MDB device' and install them... and the process ends
correctly
But after a few seconds, windows finds another time the 'new
hardware', and asks to install drivers... and so on

(I dont know if in
this phase i did some wrong action, this evening i will try to find and install
the right drivers...any suggestion?)

Then i downloaded the software for my tv box,
including the Rockchip updater (RKAndroidTool.exe) and latest custom rom from
wasser:

http://www.freak-tab.de/wasser/firmw...sser-1.2.4.zip

Then
i lauched the RKAndroidTool:
the first time it didn't find the device, so i
tried to disconnect the tv box, reconnect it and press the reset button under
the tv box

In that way, the RKAndroidTool detected the device.
I Clicked Erase IDB, and seems it worked fine, ending OK

Then i selected all the software :
Loader, Parameter, Misc, Kernel, Boot, Recovery, System and
clicked 'RUN'
The process started, i saw:
Testing device: OK
Flashing
Ram... OK

So i was happy, i thought i solved my problem...
instead i
solved nothing, the device still had the same behaviour as before


So i repeated the process, selecting only one update at a
time, (only the Boot , only the Recovery, only the System etc)
The process
seems always to work ok, because it ends with OK
But the tv box didn't change
behaviour, the same problem remains

I noticed that sometimes during the
update process the message 'Found RKAndroid Loader Rock USB' changed to 'NOT
FOUND',
so i had to retry pushing the reset button to make it be
found

I dont know how RKTool works, i have the suspect that messages
tells OK also if it do nothing ...

this evening i will retry, installing
the right drivers...and pressing for 30 secs the power and reset buttons before reflash, as you suggested...

perhaps i need a step by step guide because i am not very clever to install drivers and flash roms...

Thanks!

[ralex59]

Remote App.

Can anyone please advise what app. can I download to use my android smart phone as a remote/keyboard, as original remote is extremely inconvenient.
Will greatly appreciate any advice.

[vicolodo]

Hello,
i would like to know which version of T-R42 is my tv box
this is the snapshot of my tv box:



I see B351 V1.1

So it is V1?

Referring to this firmware:

http://www.freak-tab.de/wasser/firmware-wasser-1.2.4.zip

which files i have to select for the update?

And about the RKTool:
i see there are three tabs:
one tab is Flash
one tab is Nfs
one tab is Ram
which tab i have to select to do the update?

My device had the well known power adapter problem,
now i fixed it, the power adapter now works but the HDMI output gives me no signal

I tried to flash (from flash tab) the
kernel-720p-t-r42-old.img
and all other related software (loader,parameter,misc,boot,recovery,system)
when i click RUN the process starts , download and at the end says RUN OK,
but still i have no HDMI output signal

By the way,
after doing the flashing,
my pc asks for other driver for the device:
'rxda' device... why?
what does this mean?

Thanks!

[kayak1987]

I have used the same procedure and works for me,
You have only to select the right path for the files in the first page.

If the old version did not work try the NEW,

next the Lewi's firmware,
and next try to restore an original firmware to control that will not be an HDMI problem..

[vicolodo]

I have used the same procedure and works for me,
You have only to select the right path for the files in the first page.

If the old version did not work try the NEW,

next the Lewi's firmware,
and next try to restore an original firmware to control that will not be an HDMI problem..

Hello , now HDMI works, the problem was due to the HDMI cable...
but WIFI does not work
I tried both with the OLD and the NEW versions, and restored also the original firmware

When i go on the settings and try to enable wifi, it turns to ON for a few seconds, then it turn back to OFF...

[kayak1987]

the wifi problem is a known issue.. hope that will be fixed soon.

Wifi didn't work neither with lewi's or wasser?
try the k-R42 versions..
maybe you loose the BT but you have the wifi working..
It depends from the wifi chip.. and I don't know which chip has your board..

hope that someone more expert than me will help you

[vicolodo]

the wifi problem is a known issue.. hope that will be fixed soon.

Wifi didn't work neither with lewi's or wasser?
try the k-R42 versions..
maybe you loose the BT but you have the wifi working..
It depends from the wifi chip.. and I don't know which chip has your board..

hope that someone more expert than me will help you

hello,
my wifi chip is the ap6210,
you can see this in the snapshot above...
i have not tried yet lewi`s firmware, can you send me a link to this firmware?
thanks!!

[kayak1987]

http://www.freaktab.com/showthread.php?9076-T-R42-2-0-Board-Firmware-by-lewy20041

try, but your board is slightly different from mine B351_V 2.0

[vicolodo]

http://www.freaktab.com/showthread.p...e-by-lewy20041

thanks ,
i see v2.0 board...
i hope it works also with 1.1

[vicolodo]

Hello,
no, V2.0 does not work...
i flashed the firmware but when the T-R42 boots,
it stays for a long time on boot,
then it stops

And now my pc is no more able to found it

Perhaps now i have to update it from recovery,
choosing 'update from external storage' but i have not the zip for this update...

[Snowman58]

Unsupported Video

I have a "Bluetooth Rk3188 quad core MK888B tv box" that geekbuying.com identifies as an "MK818". Works great with my Toshiba TV.

I hooked it up to a new Westinghouse 1080p today & the TV showed "Unsupported Format".

Any ideas whats happening or solutions?

Since the original post, I have hooked up to two different models of Westinghouse TV. One worked perfectly. Second dropped the signal and resync'd every few minutes.

Still works perfectly on my Toshiba.

Really hoping for some direction on what is causing this problem!

Thanks!

[consoleboy]

error: "device not found" when trying to root, but driver ok

Hi, i'm trying to root my box via "TPSParkyRoot.bat" but have trouble.

Box was bought in Germany as
"CS918 K-R42 Quad Core Smart TV Box Mini PC RK3188 1.6GHz 8GB 2GB RAM MK888" ,
Model is rk31sdk, Android Version is 4.2.2.
It has an option to switch on Bluetooth, but not tried.
So i think its one of the many T-R42 / K-R42 clones and i'm in the right thread.

This is how i try to root:
- I installed Rockusb device driver, this worked (i can see in device manager: rockusb-device))
1) "Connect to usb" enabled
2) "Usb debug" enabled
3) "Unknown sources" enabled

- switched off box,
- plugin microusb cable, connect with pc
- press and hold reset button
- plugin power
- press power botton (light comes red)
- PC recognizes rockusb-device
- release reset-button
- start TPSparkyRoot.bat

- get Message "daemon not running, starting on port 5037"
- get message "daemon started successfully
and then i have
"error: device not found" (3 times)
so i think the adb-commands do not work.

Tried to change adb drivers (UniversaladbDriver, ADBDriverInstaller), same error
Even tried Moborobo (not worked at all for me).

Someone can help ?