I'd just like to confirm that for me this file (with a few more) installed automatically. Could you check your repositories? Mine look like this, although the 3.0.2.8 baffles me:
[ferlanero@ferlanero-imac ~]$ ssh nemo@192.168.1.13 nemo@192.168.1.13's password: Last login: Sat May 11 19:05:46 2019 from 192.168.1.102 ,--- | Sailfish OS 3.0.3.9 (Hossa) '--- [nemo@Sailfish ~]$ ssu lr WARNING: ssu.ini does not seem to be writable. Setting values might not work. Enabled repositories (global): - adaptation0 ... https://store-repository.jolla.com/releases/3.0.2.8/jolla-hw/adaptation-intel-tbj/i486/ - adaptation1 ... https://store-repository.jolla.com/releases/3.0.2.8/jolla-hw/adaptation-intel-tbj-dhd/i486/ - aliendalvik ... https://store-repository.jolla.com/releases/3.0.2.8/aliendalvik/tbj/ - apps ... https://releases.jolla.com/jolla-apps/3.0.2.8/i486/ - compat-v820w ... http://repo.merproject.org/obs/home:/TheKit:/compat-v820w/sailfish_latest_i486/ - hotfixes ... https://releases.jolla.com/releases/3.0.2.8/hotfixes/i486/ - jolla ... https://releases.jolla.com/releases/3.0.2.8/jolla/i486/ - sailfish-eas ... https://store-repository.jolla.com/features/3.0.2.8/sailfish-eas/i486/ - xt9 ... https://store-repository.jolla.com/features/3.0.2.8/xt9/i486/ Enabled repositories (user): - openrepos-Mister_Magister ... https://sailfish.openrepos.net/Mister_Magister/personal/main - openrepos-nodevel ... https://sailfish.openrepos.net/nodevel/personal/main - openrepos-osetr ... https://sailfish.openrepos.net/osetr/personal/main - openrepos-thebootroo ... https://sailfish.openrepos.net/thebootroo/personal/main - store ... https://store-repository.jolla.com/tbj/i486/?version=3.0.2.8 Disabled repositories (global, might be overridden by user config): Disabled repositories (user): - home ... https://download.jollamobile.com/home:/honeybadger/latest_i486/ - mer-tools ... [nemo@Sailfish ~]$