Unzips /boot/Image and /boot/vmlinuz
I have
$ md5sum /boot/Image /boot/vmlinuz
62ef910bc79c1fd48074b4ae2ce44f8e /boot/Image
62ef910bc79c1fd48074b4ae2ce44f8e /boot/vmlinuz
which eats up space on the already tight partition. If vmlinuz is already uncompressed with 5.x we don't need an additional Image
anymore making our diff even smaller.