Update packages
===============

Each folder here is named for the upgrade it performs, e.g.

    v3.9.8-fix-102525 to v3.10.0/

and contains:

    update.zip                  the package to upload

To apply an update, sign in as the super admin -- the original administrator
account created at install time, since no other account is permitted to run an
update -- and go to

    Admin -> Overview

Click Update on the System card there, and upload that folder's update.zip. Do
not unzip it first.

Back up your database and your whole install directory before you start. An
update makes irreversible changes and there is no rollback.

Language files are not part of an update -- your installed languages are your
own copy and are never overwritten. To pick up text a release adds, download
the latest files from

    https://github.com/titansys/zender-languages

and re-upload them under Administration -> Languages. If you have customised a
language, do not overwrite it: that repository's "changes" folder lists the keys
each version adds, so you can top your own translation up without losing edits.

Upgrading from a version older than the oldest folder here? Download that
release's own ZIP from the releases page and apply its update packages in
order first.
