EX Series - Common Questions » Software Issues

How do I uninstall or upgrade an EX DVR driver?

Drivers can be problematic to get rid of at the best of times. Windows likes to keep the resource and INF files around, long after a piece of hardware has left the system, just in case it ever comes back. Unfortunately, EX DVRs require an installer program to set up certain functions in the registry, which is why Windows should not auto-detect and install an EX DVR driver (i.e. the registry entries are not set up properly if auto-installed).

The best way to upgrade and/or change a driver is to get rid of the old ones. First, shut down the DVR Main, then bring up the Device Manager. Then, right-click on a DVR card entry (usually in the Sound controller category) and select Uninstall (do this for every DVR card entry).

dev_mgr_2.gif

After which, the system may request a reboot - do not do so!

Then, goto WINDOWS/SYSTEM32/DRIVERS (or WINNT/SYSTEM32/DRIVERS) folder (you may need to access the Explorer properties and "Show Hidden Files" to do so) and look for the following files:

HR Series - MP4DVR.SYS
CN-CL-SR Series - Saa46_32.dll, Saa7146.sys, Divis7146.SYS
CA Series - DEV_STRM.sys

These files are the core driver files and can be "removed" (they will be re-installed later).

Alternately, you can navigate to the WINDOWS/INF folder and look for an OEM#.INF file (where the # equals a number). There will be several; these files are information files for manufacturer (i.e. non-Microsoft) drivers. Double-clicking one will open it in Notepad. You can then look for the one or two files that have DVR related information in the file, like so:

dvr_INF_1.gif

There should only be one file for the HR series, and two for either of the CN, CL, or SR series. These INF files can likewise be "removed".

Once either the Driver or INF files have been removed, the system can be rebooted. When it restarts, it will look for the drivers - CANCEL this action. It may also complain about not being able to start the DVR, but because the drivers have been removed, this is normal - simply cancel the error to continue.

Then take the driver installation files (either the single self-extracting installer file, or the driver folder) and install (if using the pre-extracted drivers in a folder, run the "installer.exe" file). Once done, reboot, and the system should return to normal.

Last update: 2007-03-26 13:00
Author: Scott Neily

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