It's here
SSH it in.
Upload the .deb file to /var/root/.
Open Mobile Terminal
Type "su" and hit return when you first launch terminal then it will ask for a password
type "alpine" then tap return
type cd ~ ; dpkg -i «filename.deb», where you have to replace «filename.deb» with the file name of the uploaded file (without the guillemets). Also pay attention as case matters, one is a tilda, not a comma
Respring your device.