The ARCHOS Cobalt is one of the most affordable devices from the market at this moment featuring a Rockchip 3066 Dual Core CPU at 1.6 GHz, 1Gb RAM, 8″ capacitive screen, dual camera 0.3/2 Megapixels makes this tablet a serious option when you consider buy an Android device. We have built a custom firmware based on the stock firmware (dated 2012.10.12) providing root with read-write access to /system partition.

ARCHOS_80_Cobalt

Archos Cobalt custom firmware features:
Full root support with writable /system partition
Root access is controlled thru SuperSU.apk v0.95 (free version), by XDA developer Chainfire

Screenshot_2013-01-01-21-55-41

Archos Cobalt root firmware install procedure

Please be aware that all the existing apps and data will be erased in the flashing procedure, if you have something to backup, this is the moment.

Step 1. Download and unpack the firmware

Custom ARCHOS 80 Cobalt firmware download

kasty-cobalt80-40-045-2G.zip

This firmware is specific to the ARCHOS 80 Cobalt model and should not be installed on other devices.

WE WILL NOT BE HELD RESPONSIBLE FOR ANY DAMAGE TO YOUR DEVICE.

THIS FIRMWARE UPDATE IS USED AT YOUR OWN RISK.

WE RECOMMEND TO FLASH THIS FIRMWARE ONLY IF YOU ARE ABLE TO RESCUE A BRICKED DEVICE USING ROCKCHIP FLASHING TOOLS.

Step 2. Download and run Rockchip Flashing tool

Download and unpack Rockchip tools and run the application.

Step 3. Get your tablet in flashing mode

There are 2 ways to get in the flashing mode:
A) Using the Hard Keys
-Shut down your tablet and disconnect if from the pc.
-Press the volume key – (the one that lowers the volume)
-Insert the usb cable in the tablet while keeping pressed the volume button –
-Release the volume key

B) Using ADB
-Install android sdk
-Enable usb debugging
-Issue in adb “adb reboot bootloader”
You may want to refer to our article about ADB installation.

Install the RK30 drivers from the Rockchip tools folder

Step 4. Installing the firmware

-Select the firmware image (update.img) with Rockchip Tool
-Select RESTORE
-Wait till your tablet is flashed

Step 5. ENJOY root on your ARCHOS 80 Cobalt :)

Thanks to Admin for making this possible.

11 COMMENTS

  1. Update 2 : I now have succeeded to start my Archos 80 Cobalt again, but I only have a black screen with the green Android robot upside down (with a red arrow). What should I do now. Please help me, I am waiting for your answers and will not do anything until then (not to do stupid and wrong things that I will regret). Thanks in advance.

      • Thanks. Ihave succeeded to recover my tablet witn a tutorial on the website of Archos. I have reinstalled te original firmware (with the Rockchip flashing Tool 1.8 on the Archos website), and then the update from march 2013. As the method was the same to install this firmware (in this page), I have done it for the third time to install this firmware to get the 2Gb storage for apps, and it worked very well.
        It was the first time I downloaded a custom ROM on a Android device, now I understand how it works. Thans for your answer (even if I managed to recover my tablet all by myself), it was not so difficult by the way, I only did not understand the way to do it at the first time, now it’s OK :)

  2. Update : I have succeeded to install the update image on my Archos 80 Cobalt this morning. Then I got my tablet in flashing mode. After that, i restarted my tablet in order to get it renognized from my PC to be able to select the firmware image with the Rockchip Tool, but my tablet asked me to reboot my tablet with the new firmare image. Idid so and since my tablet cannot restart. I think QI have bricked my tablet.
    What can I do ? Please help me.

  3. I cannot download the image on my tablet, there is not eough disk place. I have set erased all my apps, set it like if it was was just out from the factory, nothing has changed, there is alway this the problem of disk space. What can I do ?

  4. Thanks alot for this,

    took me a while using option A as the tablet just has a blank screen. But windows detected it and i was able to install the usb driver then install the firmware with the tool.

    Very cool, thanks for this

  5. Well, i think the guide is clear and it tells you that you need to unpack the firmware and flash`it with rockchip tools and not put the zip archive on the tablet.
    Re-read every step and flash your tablet using the A method to get the tablet in flashing mode.

  6. I downloaded the above mentioned .zip file and copied to the tablet, i got the option in the tablet, update is available select continue.. i clicked on it, firmware update went for 2 mins and after that my tablet is not even starting up.. please advice..

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