Cosmo Linux Beta
From Planet Computers
Linux installation guide
The first step to install Linux on your Cosmo is to make sure you are running the latest Android firmware, currently v19. You can check the Android version by tapping Settings -> System -> Advanced -> About Phone and scrolling to the end of the page as in the following screenshot.
Next you will have to download the Linux firmware, which will need to be installed into the microSD card on your Cosmo. Insert a microSD card on your cosmo and make sure it is formatted as MS-DOS(FAT32).
You can find the download archive at this address: http://support.planetcom.co.uk/download/cosmo-customos-installer-beta.zip