Firmware upgrade failure using the .dav file sometimes happens with the DV-Micro, but rarely with the DV-Mini or DV208/216 units.
In the case of firmware upgrade failure, you need to upgrade the firmware with the alternate method, using the following procedure (Note: the example shown uses the firmware version 556_18631)
To use the alternate method of firmware upgrading, do the following:
1- Go to the Firmware folder in Program Files (x86) and then the zip folder.
2- Unzip the main f/w (556_18631 in this example), the English and the SNMP (not for Micro) files someplace (desktop or in the zip folder itself).
Note – Do not do it for Zoneinfo, it is not necessary, and manual upgrading will fail because info has not changed since 2007.
3- Connect to the Davicom, and go to Firmware Upgrade.
4- Browse to the unzipped folder for the main firmware. You will need to select All Files to see the hex file because DavLink will look for a .dav file.
5- In the unzipped main firmware folder select the release.hex file.
6- Click Open, and then, hold down the Ctrl and Alt keys and then click Start.
8- A window will open showing all the modules that have been selected, so leave it as is.
9- Click OK and then the firmware upgrade will proceed according to the old method.
10- When the Davicom finishes and reboots, repeat the procedure with the unzipped English and SNMP (not for Micro) folders.