Home > Android, Hardware, Rockchip RK31xx > MK918 Android TV Box Powered by Rockchip RK3188T Sells for $50

MK918 Android TV Box Powered by Rockchip RK3188T Sells for $50

MK918, also known as K-R42-1, CS918, or MK888, is an Android TV box powered by Rockchip RK3188T with 2GB RAM, and 8GB Flash. This is a pretty standard device, and I already featured it, but GeekBuying is selling the device for $49.99 as part of their second anniversary, which looks to be good deal, but it turns out some Aliexpress sellers are also doing promotions for about the same price ($50+). The promotion on GeekBuying will last about on more day, and around 50 units are available, and on Aliexpress promotions runs between 1 and 3 more days. The usual price seems to be between $60 and $70, but I guess some companies may get rid off old stocks with products based on Amlogic S802 already there, and Rockchip RK3288 and AllWinner A80 products soon to hit the market.

MK918Let’s remind ourselves of the complete specs:

  • SoC – Rockchip RK3188T quad Cortex-A9 CPU @ 1.4 GHz + Mali-400 MP4 GPU
  • System Memory – 1 or 2GB DDR3 SDRAM
  • Storage – 8GB Nand Flash +  MicroSD slot (Up to 32GB)
  • Connectivity
    • 10/100M Ethernet
    • WiFi 802.11 b/g/n with external antenna
    • Bluetooth 4.0 (optional, may not be found in all models)
  • Video Output – HDMI + AV output jack
  • Audio Output – HDMI + + AV + optical S/PDIF
  • Video Codecs (Decode) – MPEG-1, MPEG-2, MPEG-4, H.263, H.264 (up to 60 Mbps), AVS, VC-1, RV, VP6/VP8, Sorenson Spark, MVC @ 1080p60
  • Video Codecs (Encode) – H.264, VP8, and MVC @ 1080p
  • Audio Codecs – MP1,MP2,MP3,WMA,WAV,OGG,OGA,APE,FLAC,AAC,M4A,3GPP…etc
  • USB – 2x USB host ports
  • Misc – IR port
  • Power – 5V/2A
  • Dimensions – 142x95x21 mm
  • Weight – 135 grams

The device runs Android 4.2.2 and comes with a power adapter, HDMI and AV cables, a user’s manual, a micro USB to USB cable, and an IR remote control. Please bear in mind that Bluetooth may not be available in all models, and some feature 2GB RAM, others only 1GB. MK918 in GeekBuying features BlueTooth and 2GB RAM, but you’d better check if you purchase a box via Aliexpress. The remote control may also be different between sellers. The one provided on GeekBuying is pretty basic, and the picture above is from a seller on Aliexpress with more buttons. I never use the provided IR remote control myself, but maybe some people do :)… The latest firmware may be available here.

It’s pretty amazing how prices have come down, and you can now buy a quad core mini PC delivered to your door for just $50.

  1. adem
    June 24th, 2014 at 18:29 | #1

    on geek buy it shows a mother type of remote controll wasent too sure if it was ir or rf

  2. Paul taraneh
    June 24th, 2014 at 18:38 | #2

    Go with aliexpress GeekBuying had me waiting more than two eeks for ac device they claim was out of stock and wouldn’t allow me to choose another device so their customer service and bait and switch tactics is what I warn you about. They may not even have it for that price and are just trying to lure you in. For TV boxes aliexpress has more of a selection anyway

  3. dmsc
    June 24th, 2014 at 19:26 | #3

    I have a newer/cheaper device like this, and is a LS_X6_V12 motherboard, with no custom ROMs available, so be careful.

  4. FossXplorer
    June 24th, 2014 at 20:08 | #4

    CNXSOFT: why does aliexpress list these with just 1GB RAM, while Geekbuying lists them with 2GB RAM?

  5. June 24th, 2014 at 20:09 | #5

    Some more details about LS_X6_V12. It’s also a CS918/MK918 board, but possibly a newer version? -> http://www.freaktab.com/showthread.php?12834-LS_X6_V12-Motherboard-with-RK3188-T

    Cheaper? Where?

  6. June 24th, 2014 at 21:31 | #6

    There must be model with different options, some come with 1GB, others with 2GB. I’ll update the post to mention this “detail”.

  7. June 25th, 2014 at 03:57 | #7

    I have seen this case with different motherboards

  8. adem
    June 25th, 2014 at 07:36 | #8

    hey guys here is a few different types http://blog.geekbuying.com/index.php/2014/01/25/whats-the-difference-between-t-r42-mk918-cs918-q7-quad-core-tv-box/#.U6oYJo0kHRy

    not too sure but after helping a few friends flash their firmware’s on these devices some of them did not have wifi or bluetooth working some had problems with the ir remote it is a massive head ache. also the remote on geek is a ir remote and i dont think it has a curser button witch i think is very important when it comes to the android side of thing some apps do require curser support.

  9. adem
    June 25th, 2014 at 07:37 | #9

    Model 1:T-R42
    Shopping link:


    Price: $79.99 Free Shipping

    T-R42 is the first generation products, and we sold this at first. Most of people begin to know this model through our site. so how to know you are getting the real T-R42?

    1 Check the lable in the back cover.

    We ask the factory to print the model on the back cover label directly;

    2 PCBA Board, here is the pcba board photo for T-r42

    and you can find the PCBA Board model is B351_V2.0

    3 the wifi and bluetooth chipset use RTL8723AS.

    4 Firmware:

    Stock firmware for T-R42 B351_V2.0


    Custom rom for T-R42 B351_V2.0


    Model 2: MK918
    MK918 is coming to market in Dec, which has the same casing as T-R42, but it do have some difference with T-R42:

    Shopping link:


    Price: $78.99 Free Shipping

    Label on the back cover:

    PCBA photo:

    Model on PCBA is : HM

    wifi/bluetooth chipset is AP6210.

    Stock firmware :


    password : geekbuying.com

    Model 3 : Q7
    Q7 should be the new model which come to market in the middle of Dec. it should be the cheapest ones in all of this 4 models.

    Shopping link is:


    price is $74.99 Free Shipping

    Label on back cover is

    PCBA board photo is here:

    and print on the PCBA board should be XT-Q7-V01

    WIFI chipset is RTL8188EUS, bluetooth chipset should be MT6622N

    Stock Firmware

    Still uploading.. once finish, will update here.


    Model 4 CS918
    CS918 come to market in same time as T-R42, however, the factory screw up the versions, and now we only sell on version in our site, shopping link:


    Price: $79.09 Free Shipping

    Label in back cover should be the same as T-R42, however, the model should be CS918.

    PCBA board:

    the print on PCBA board should be RK3188_BOX_SZY_X6.

    the wifi/bluetooth chipset is still AP6210, same as MK918.



    If you are a new users and want to buy such a TV BOX, we recommend you choose the original T-R42, because it has the fully custom rom support, have the real 1080p kernel. and quality is good.

    If you already own one of those models, i hope my post can help you to identify the model you have, and get the correct stock firmware.

    WELL. that’s all, thank you!

    If you have any questions, please feel free to leave message here. i will try my best to reply.



  10. dmsc
    June 25th, 2014 at 19:27 | #10


    I mean “cheaper than the original CS918”, I bought mine on eBay for $60.

    I know that thread, I posted there 😉 , I have tried a couple of things but still can’t compile a working kernel for my device, I will keep trying on the weekend.

  11. jn
    June 25th, 2014 at 19:42 | #11

    well, now there is a 19.99 price tag on geekbuying.com…

  12. June 25th, 2014 at 19:50 | #12

    :O Cool. Now that’s a deal!

  13. FossXplorer
    June 26th, 2014 at 04:49 | #13

    jn, adem, it’s out of stock. Any idea if it will be back in stock?

  14. adem
    June 26th, 2014 at 06:09 | #14

    don’t know dude sorry

  15. chris
    July 12th, 2014 at 15:13 | #15

    I have bought one of these had for 3 months now it won’t start up all I get is the logo andriod any ideals how I can restart it please

  16. July 12th, 2014 at 15:20 | #16

    Try to reflash the firmware. There are many different boards as mentioned by Adem, so make sure you have the right firmware for your device.

  17. avy
    March 28th, 2015 at 05:19 | #17

    I got 10 none of them will stay connected to WiFi or load a WiFi list

  18. Haldane Castro
    April 15th, 2015 at 23:41 | #18

    Dear Adem, bought a box in this model http://pt.aliexpress.com/item/CS918-MK888-Android-4-2-TV-Box-RK3188-Quad-Core-Mini-PC-RJ-45-USB-WiFi/1877438874.html?s=p it worked normally for 60 days but now the boot displays ‘Type password to decrypt storage’ and I can not do anything else. The Android is 4.4.2.
    I tried solution with the seller without success. I need to reinstall the Android? Thanks for any help.

  19. Gary H
    June 27th, 2016 at 00:01 | #20

    I have this board in mine HLSX_X6_V10 and cant seem to fine firmware that works. Can anyone help

  20. data
    December 10th, 2016 at 19:06 | #21

    does anybody know if the cvbs = tv out works on these devices ? is it needed to shutdown and restart box after wanting to use cvbs video RCA instead of hdmi after having selected that mode in screen options ?

  21. December 12th, 2016 at 09:46 | #22

    I used to test this, and it worked at the time (2014/2015), but I stopped since I did a survey a while back and nobody used the AV port.
    You normally don’t need to restart the box, if HDMI is not detected, it should fallback to the AV port.

  1. July 5th, 2014 at 14:50 | #1