[Tuto] Update Flash Firmware Cube U30GT Jelly Bean Android 4.1 JB


The tablet Cube U30GT is the latest tablet pc from Cube but also one of the most powerful. Indeed, its Dual Core 1.5 GHz RK3066 processor  and Quad Core Mali 400 graphics card let it topped the ranking of the best chinese tablet pc. In addition, the finish of the tablet is neat and unadorned. The brand always provides good support and updates.

Tablet pc Cube U30GT is one of the first tablet pc to integrate Android 4.1 Jelly Bean. We can therefore congratulate the reactivity of the brand. The Cube Tablet pc is for us, the tablet of the moment, with a quality / price / performance unmatched ratio.

You can get the tablet Cube U30GT at ChiniStore: Cube U30GT


Cube U30GT Firmware description:

Cube U30GT  Firmware (Android ICS 4.1 Jelly Bean). Only for H version (check the reference which is directly written on the back of the tablet pc)

Cube U30GT Jelly Bean Firmware link :

Here is the link for the Cube U30GT firmware, Only for H version (password :

Prerequisite :

  1. Make a backup of your data and applications (save your files and pictures on your computer, or use backup applications from Google Playstore, there are a lot on the market)
  2. Get a microUSB (male) to standard USB (male)
  3. Fully charge your tablet pc

Cube U30GT Update Flash process:

  • Unzip the downloaded file (password:
  • Turn off your Cube U30GT tablet pc
  • Link the your tablet pc (micro USB) to your computer. Then press “Volume up” and “Power” buttons. Press until your computer recognize your tablet pc. Then released them.
  • Windows will install the drivers of the tablet pc Cube U30GT. Stop the process then manually install the drivers by browsing in the folder “Drivers“, then select the right folder according to your windows version.
  • After installing the Cube U30GT drivers, launch “Rockchip Batch Tool v1.5.exe”. if the tablet pc is recognize, a green square should show up. You can only upgrade your tablet pc if the square is green.
  • To set the application in english, press the first button, and select “English
  • If no image file is loaded in the “FW Path“, then press the three “…”, browse in the folder and select U30GT-H_v1.05_20120816(Android4.1).img
  • Then press “Restore“, and wait until the update is done
  • If everything is ok, you should see “Success <1>”, and your tablet will automatically start.
  • If the procedure is not working, try to change your USB cable, change USB port (computer) or try on another Windows OS

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3 Comments + Add Comment

  • Hi, When I turn my tablet cube u30gt-mini come in android dead and now I do not update its firmware by rk batch becuase The driver is not recognized ,I’ve tested several Windows,i use other computer.Connect the computer usb port in the back of the computer interface and Nokia cable drivers test but I’m not diagnosed until the firmware update on what is my machine has the problem of hardware software? How do I get my Android’s tablet up? what should do ido?

  • Hi

    I can help you on your question (when I connect the USB cable to my PC, I don’t get the option to mount the USB storage)

    1. Turn off the Cube then plug in the mini USB cable then connect to PC/Laptop
    2. Then on the (Cube) Hit the power and vol + button at the same time. Then when you hear a beep on the pc let go of both buttons on the tablet wait for the PC to update the driver
    3. then on your Cube screen it will show the USB icon for you to turn on. that’s it done

    All you do next time is make sure your tablet is off,
    1. Then plug in the USB cable and connect to the pc
    2. Then turn on the Cube power button (Only) Then wait to see (USB icon) on the (Cube screen) Touch it to turn it on…..Done.

    This worked on my Windows 7 PC

  • This information is 100% accurate and reliable. I have been trying for a week to upgrade my OS for my cube to 4.1 on a number of tablet forums…..Simply put…this is it.

    You will need the rockchip batch tool, but it worked the first time.

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