PRIMA LT Upgrade 1.) Extract the file "lt106.zip" into a directory named PrimaLT. 2.) Connect the female end of the C1800 Rear Panel Remote Control cable to the RS-232 Serial port (COM1 or COM2) of the PC. 3.) Connect the male end of the C1800 cable to the Remote Control port on the rear panel of the PrimaLT. 4.) Power up the PrimaLT while pressing the Up Arrow key until the word "Hold" appears on the LCD screen of the PrimaLT. 5.) From the PrimaLT directory on the PC, run "PRIMALT.BAT" by typing PRIMALT [Enter]. 6.) Follow the on screen instructions to begin the download process. 7.) When the download is completed, power down PrimaLT, then power back up and wait for complete boot up process. 8.) Upgrade is complete. NOTE: Windows users may run "PrimaLT.bat" from either the Start Menu Run Command, or by using Windows Explorer to open "PrimaLT.bat"