GPS 15xH/15xL Software Update

Download the latest software for the GPS 15xH/15xL here. You'll want to download both the unit software and sensor configuration (SNSRXCFG) software.

Setup your sensor by wiring the device as shown in GPS 15xH/15xL Technical Specifications Figure 1 and run SNSRCFG
Choose the GPS 15xL and click OK
Use Comm/Setup, select the correct com port and Auto for baud rate and click OK
Use Config/Switch to NMEA mode and click through the pop-ups
Use Comm/Connect (must be successful in order to continue - if not, correct the wiring and repeat the steps above)
Use Config/Switch to Garmin Mode
Run Updater.exe, choose 38400 for the baud rate, choose the correct com port and continue with the firmware update
Connect the next device to be updated and continue at step 4

If these devices are definitely in NMEA mode (normally the case), you may use the following, abbreviated procedure:

Setup your sensor by wiring the device as shown in GPS 15xH/15xL Technical Specifications Figure 1 and run SNSRCFG
Choose the GPS 15xL and click OK
Use Comm/Setup, select the correct com port and Auto for baud rate and click OK
Use Comm/Connect (must be successful in order to continue - if not, correct the wiring and repeat the steps above)
Use Config/Switch to Garmin Mode
Run Updater.exe, choose 38400 for the baud rate, choose the correct com port and continue with the firmware update
Connect the next device to be updated and continue at step 4