From Planet Computers
→Download and Install Linux firmware v3
Select "Advanced" and then "Flash Image Manually" and then select the<span style="color: #000000;"> Cosmo_firmware-stem_ospi2_mouse15.bin. To update the CoDi firmware click on the "FLASH NOW" button. After flashing, please ignore any over-the-air Cover Display assistant notifications to update firmware as this is a custom build.</span>
====Download and Install Linux firmware v3====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).
The Linux firmware is part of an archive that also contains TWRP and rooted Android.
You can download the latest archive at this URL:
* [http://support.planetcom.co.uk/download/cosmo-customos-installer-v3.zip http://support.planetcom.co.uk/download/cosmo-customos-installer-v3.zip] (MD5: f6a765389913c790174d05dfdcb031d9)
* [http://support.planetcom.co.uk/download/cosmo-customos-installer-v1.zip http://support.planetcom.co.uk/download/cosmo-customos-installer-v1.zip] (MD5: 554e8ec1f1c57b0fc3a6140b1ecad3ea)
Alternatively, you can also purchase a Linux Media Installation Card with the firmware already preloaded onto
the micro SD card. This can be purchased from [https://store.planetcom.co.uk/collections/media-books https://store.planetcom.co.uk/collections/media-books/]
Once you downloaded the zip archive you will have to extract its content onto your microSD card:
Open Files by Google and locate the ZIP archive# Tap the file to reveal the cosmo-customos-installer folder# Long tap on that folder, select Extract to... and finally select the microSD card as destination. Your microSD card should now contain a folder named cosmo-customos-installer with several files inside it.
Using this method you will be able to install a custom OS such as Linux on your device without the need for a laptop or a desktop computer. All you need to do is to download the installer in a micro SD card and use the recovery mode to start the installation.