Updates & Downloads
TRANSPONDER (PC tool): GTX 3X5 software version 2.81b
as of August 10, 2023
View installation instructions and system requirements
Notes:
- This software update is intended to be loaded on GTX 3X5 Transponders only.
Installation Instructions
- The application requires Windows 2000, XP, Vista, Windows 7, or Windows 10. Mac computers are not supported.
- Download TRANSPONDER_PCtool__GTX3X5_281.zip. Unpack, open,
GTX_3X5_Software_Loading_Tool_Guide.pdf.
- Follow instructions in the User's Guide (GTX_3X5_Software_Loading_Tool_Guide.pdf), beginning with Section 2, ''Installation''.
System requirements
- IBM-compatible PC running Windows 2000 or later operating system and an available Com 1, 2, 3, or 4 port.
- PC Interface Cable for your GPS unit. The PC Interface Cable may be purchased through your local Garmin distributor or ordered direct from our Online Store.