參考資訊： https://cassandraasaservice.github.io/#ketju https://docs.sailfishos.org/Support/Help_Articles/Managing_Sailfish_OS/Updating_Sailfish_OS/ 步驟如下：
$ devel-su # ssu re 4.6.0.15 # ssu ur # zypper ref # zypper dup # reboot