User`s guide

BreezeNET DS.11 Series User’s Guide
A-8
Firmware
Can the BU-DS.11/RB-DS.11 firmware be upgraded?
Yes, the firmware in the BU-DS.11/RB-DS.11 is stored in
flash and is upgraded using the built in Configuration Utility
or the TFTP server.
Can the BU-DS.11/RB-DS.11 flash be erased or the
firmware changed by an unauthorized person?
No, the TFTP server in the BU-DS.11/RB-DS.11 requires the
SNMP write community name (password) to perform an
upgrade.
Can the firmware flash be corrupted when upgrading to
a new version?
Yes, if the TFTP file transfer is interrupted during a flash
update the firmware may be corrupted. The DS.11 has a
backup flash, which contains the previous version for
firmware. If the primary flash is corrupt, then the backup is
automatically used to return the unit to an operating state.
When does the back up flash image get upgraded?
After completing a firmware upgrade, the backup flash
containing the old firmware version is overwritten with the
new version on the new power on cycle.
Can DS.11 firmware be downgraded?
Yes, an earlier version of firmware can overwrite a newer
version.