The difficulty of Sailfish X installation really depends on if you want to backup the TA partition (so that you can return the device to original state, for example for easier warranty repair) or not. Without the backup step (which entail at least one firmware flashing and then 3 hours of updates or two firmware flashings) the installation process is easy, you just: 0. pay for license, download the image, download the kernel binaries 1. make sure the Android firmware is new enough 2. unlock the bootloader (this is kinda annoying, but I understand the security implications of why it is it done that way) 3. run the Jolla provided flashing script And that's it, isn't it ? As for additional optional but useful steps: a) resize rootfs so your updates will not fail in the future due to the by-default laughably small rootfs overfilling b) install Google play services in case some of the Android apps you use require them c) install warehouse to get access to OpenRepos apps d) install modRana & OSM Scout server from OpenRepos ;-)