Hello psyprof1,

With both your computer and Model 990 powered down, disconnect your USB cable. One of the tricks for not running into the "device restart" message is to plug your RS-232 cable or USB cable in with the master power switch on the rear panel set to "OFF". Follow the exact sequence below:

1) Press the master power switch on the rear panel of the Model 990 to the "OFF" position.

2) Insert either your USB or RS-232 cable into the back of the Model 990.

3) Switch from "opr" to "srv".

4) Connect the RS-232 or USB cable to the PC.

5) Turn on your PC and wait for it to fully power up.

6) Press the master power switch on the rear panel of the Model 990 to the "ON" position.

7) You are now ready to run the installer.