Web Manager “Settings” Menu Options > Configuring the Boot File Location > Local Boot Options

Local Boot Options
To understand the local options on the “Unit boot from” menu, you need to understand how the OnBoard handles software upgrades:
The first time a new software version is downloaded and installed from Cyclades, the new image is stored as “Image2” in the flash memory and the configuration is changed so the OnBoard boots from “image 2.”
The second time a new software version is downloaded and installed, the latest image is stored as “Image 1,” and the OnBoard configuration is changed to boot from “Image1.”
In the “Unit boot from” pull-down menu, the entry for the current boot image is selected by default.
After a software upgrade, the boot file location choices are:
Image1:image_filename
Image2:image_filename
The word “image” is followed by the number, followed by a colon (:), followed by the name of the file, including the version number. The menu item has the following format:
image1:zvmppconb.v version_number
The entry for the first release of the software, which is installed in the image1 area, is:
image1:zvmppconb.v100
After one or more software upgrades have been performed, a second image also appears in the menu, for example:
image1:zvmppconb.v100
image2:zvmppconb.v101
If you want to boot from another image than the one currently selected, you can select that image from the “Unit boot from” menu.

Web Manager “Settings” Menu Options > Configuring the Boot File Location > Local Boot Options