GSC3000 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 GSC3000 I/O or Voice Interface unit, the following versions are available for download:

Version	I/O 8	I/O 16	Voice Interface
5.x	5.1.20 (160 KB)	5.1.20 (160 KB)	5.2.0 (128 KB)
5.x	5.1.14 (160 KB)	5.1.14 (160 KB)	5.0.21 (128 KB)
4.x	4.1 (127 KB)	4.1 (127 KB)	4.3 (127 KB)
3.x	3.5 (127 KB)	3.5 (127 KB)	3.5 (159 KB)

Note: All I/O and Voice Interface units in your site need to have the same major version (ie. 5) of firmware to communicate with each other.

Firmware Upload Instructions:

Unplug the GSC3000 I/O or VI unit and remove the cover.
For I/O 8 & 16: 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 main 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 should now be off, indicating the firmware has been cleared.
For I/O 8 & 16: Connect a null modem cable from any PC serial port to the COM 2 port on I/O. For Voice Interface: Connect a null modem cable from any PC serial port to the COM 1 port on the Voice Interface.
Using Lynx software, initiate a firmware upload. Follow on-screen instructions. The upload process varies by software version. Please refer to the GSC3000 manual for your software version for upload instructions.