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Updates & Downloads

TRANSPONDER (PC tool): GTX 3X5 software version 2.81b

as of August 10, 2023

Download (65.87 MB)

View installation instructions and system requirements


Installation Instructions

  1. The application requires Windows 2000, XP, Vista, Windows 7, or Windows 10. Mac computers are not supported.
  2. Download Unpack, open, GTX_3X5_Software_Loading_Tool_Guide.pdf.
  3. Follow instructions in the User's Guide (GTX_3X5_Software_Loading_Tool_Guide.pdf), beginning with Section 2, ''Installation''.

System requirements

  1. IBM-compatible PC running Windows 2000 or later operating system and an available Com 1, 2, 3, or 4 port.
  2. 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.