Manufacture Technology GEFXL2-CSW28KX User Manual page 285

NOTE:
1. In case the active firmware image is the alternate image,
only the "Active Image" table is shown. In this case, the
Activate Alternate Image button is also disabled.
2. If the alternate image is active (due to a corruption of the primary
image or by manual intervention), uploading a new firmware
image to the device will automatically use the primary image slot
and activate this.
3. The firmware version and date information may be empty for
older firmware releases. This does not constitute an error.
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Publication date: March, 2012
Revision A1