Aastra 57i IP Phone User Manual page 12

The 57i phone then checks settings and looks for new configuration and
firmware updates for the phone from a server. If a new update is found, the
phone displays the message "Updating Configuration". This may take a few
moments while the phone downloads the latest updates.
Note: New updates to your phone can be automatically scheduled from the server.
This is set up on the phone system by your system administrator and should
be scheduled during non-business hours or slow call periods.
Important! Do not unplug or remove power to the phone while it is checking or
installing firmware and configuration information.
4 Model 57i IP Phone User Guide
DHCP: waiting
for IP...
Updating
configuration.....
Checking for firmware...
Do not unplug the phone!