1.2 Before Installing SD Memory Card for Software Upgrade
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SD Memory Card Installation/Upgrade Guide
1.2
Before Installing SD Memory Card for Software
Upgrade
Back up the DSKEYSD/DKEYSD/DLKEYSD file
The DSKEYSD/DKEYSD/DLKEYSD file stored on the SD Memory Card contains data necessary to
use the new features. If this file is damaged, or accidentally deleted, these new features will not
function. Using an SD Memory Card Reader, back up all of the files and folders on the SD Memory
Card, including this file, to a PC. The contents of this file are different for every SD Memory Card, so
you must back up each SD Memory Card separately.
SD Memory
Card Reader
