This is a bugfix release with few important bugfixes.

If you run 8.9.0 you can explore the newly introduced SYS UPDATE AUTO command for a simple and quick update.

You need a working Internet connection and Abilis DNS service running and properly configured ( D P DNS ).

[14:46:20] ABILIS_CPX:sys update auto ?

SYS UPDATE AUTO [-opt]        Update system to the latest release available on
                              Abilis servers

Options:

-DELAY hh:mm   Once updated, the system will reboot after the specified delay,
               where 'hh' [0..2400], 'mm' [0..59].
               Can be combined with -NOCALL -SAVE[CONF].
               Alternative to -NOREBOOT.
-NOCALL        Once updated, the system will reboot as soon as all CTI calls
               are closed.
               Can be combined with -DELAY -SAVE[CONF].
               Alternative to -NOREBOOT.
               Can be combined with -DELAY -NOCALL.
-SAVE[CONF]    Before rebooting save configuration in both current and next
               versions.
-NOREBOOT      Once updated, the system will not reboot.
               Alternative to all the other options.

[14:53:29] ABILIS_CPX:         

Refer to Abilis CPX 8.9.1 release note for further information.