VRC2500 Firmware

Important Service Note: Starting with I/O firmware version 5.1.14, the COM ports used for direct, dial-up and full-time modem connections are reversed. Not all units are affected. Click Here for more information.

If you ever need to reload or upgrade firmware for your VRC2500 unit, the following versions are available for download:

Version	I/O	Voice Interface
5.x	5.1.20 (160 KB)	5.2.0 (128 KB)
5.x	5.1.14 (160 KB)	5.0.21 (128 KB)
4.x	4.1 (127 KB)	4.3 (127 KB)
3.x	3.5 (127 KB)	3.5 (159 KB)

Firmware Upload Instructions:

Unplug the VRC2500 unit and remove the cover.
For I/O: Engage the JP9 jumper on the mainboard. Power up the unit while the jumper is engaged. For Voice Interface: Engage the JP1 jumper on the voice board. Power up the unit while the jumper is engaged.
Wait a couple of seconds and unplug the unit. Disengage the jumper. Re-apply power. The Remote/Local LED will be off if I/O firmware has been cleared and Status LED will be off if the Voice firmware is cleared.
For I/O: Connect a null modem cable from any PC serial port to the DIRECT port on the VRC2500. For Voice Interface: Connect a null modem cable from any PC serial port to the DIAL-UP port on the VRC2500.
Using Lynx software, initiate a firmware upload. Follow on-screen instructions. The upload process varies by software version. Please refer to the VRC2500 manual for your software version for upload instructions.