Changes
Download the [http://www.fit-pc2.com/download/fitlet/Linux/mint/17/fitlet_kernel_3.16_2015-12-01.zip kernel package] for fitlet and ensure the integrity of the file:
$ md5sum fitlet_kernel_3.16_2015-12-01.zip
Unzip the downloaded archive, it includes the following:
* linux_3.16.0.orig.tar.gz - mainline Linux 3.16.0 sources