Symbol AP-51xx Product Reference Manual page 139

Upgrading from v1.0.X.X to 1.1.X.X/1.1.1.x is a two step process requiring the same upgrade
procedure to be repeated twice. The first upgrade will result in a bootloader change, and the second
upgrade will result in a firmware change. For subsequent upgrades, a single download will suffice.
Using Auto Update, the access point will automatically update itself twice when upgrading.
Upgrading from v1.0 to v1.1/v1.1.1 retains existing settings. Symbol recommends that users export
their 1.0 configuration for backup purposes prior to upgrading.
When downloading from v1.1.1/v1.1 to v1.0, all configuration settings are lost and the access point
returns to factory default settings.
CAUTION If downgrading firmware from a 1.1 to a 1.0 version, the access point
!
NOTE An AP-5181 does not support any firmware versions prior to 1.1.1.0.
For detailed update scenarios involving both a Windows DHCP and a Linux BootP server
configuration, see Configuring Automatic Updates using a DHCP or Linux BootP Server on page
CAUTION Loaded and signed CA certificates will be lost when changing the
!
If a firmware update is required, use the
a file location for updating the firmware.
NOTE The firmware file must be available from an FTP or TFTP site to perform
CAUTION Make sure a copy of the access point's configuration is exported
!
automatically reverts to 1.0 default settings, regardless of whether
you are downloading the firmware manually or using the automatic
download feature. The automatic feature allows the user to download
the configuration file at the same time, but since the firmware reverts
to 1.0 default settings, the configuration file is ignored.
.
access point's firmware version using either the GUI or CLI. After a
certificate has been successfully loaded, export it to a secure location
to ensure its availability after a firmware update.
Firmware Update
the update.
before updating the firmware.
System Configuration
screen to specify a filename and define
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B-1.