SATEC EM920 Operation Manual - Manual (Page 144)

Chapter 6 Device Control and Upgrading
Upgrading Meter Firmware
144 EM920 Power Quality and Revenue Meter
5. Wait about 10 seconds until the meter completes
burning firmware into the flash and reboots before any
further manipulating with the meter.
NOTES
1. When the meter reboots, the Ethernet and GPRS
networks are both restart, so communications may be
temporarily lost. You may need to wait a short
duration before PAS restores a connection with your
meter.
2. If you are connected to the meter via a wireless GPRS
network, the meter will logout of the network and
logon again so the IP address you used for connecting
to the meter will no longer be supported. You should
check the meter for a new GPRS network IP address
either from the front display, or via PAS using another
communication port.