Updates & Downloads

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T 5, TT 15 software version 6.80

as of August 12, 2026

Serial Port

Download (998 KB)

View download instructions and system requirements

USB Card Programmer

Download (747 KB)

View download instructions and system requirements

Notes:

• ATTENTION: Ensure that the device is fully charged prior to initiating software updates.
• Attention macOS users: This product IS NOT compatible with your OS. Please use the Windows version of WebUpdater to perform updates.
• WARNING: If this software is uploaded to a device other than that for which it is designed, you will not be able to operate that device.
• If attempts to upload software fail, you may need to return the device to Garmin® for service.

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Change History

Changes made from version 5.40 to 6.80:

• Fix Astro mode

Changes made from version 5.30 to 5.40:

• Bug fixes and improvements

Changes made from version 5.20 to 5.30:

• Fix bark sensitivity not updating

Changes made from version 5.00 to 5.20:

• Bug fixes and improvements

Changes made from version 4.70 to 5.00:

• Add improvements to pairing

Changes made from version 4.50 to 4.70:

• Fix Rescue Mode not exiting when rate changes

Changes made from version 4.30 to 4.50:

• Add support for new battery replacements

Changes made from version 4.20 to 4.30:

• Fix no GPS fix issues

Changes made from version 4.10 to 4.20:

• Restores update rate previous to low battery if rescue mode is enabled and low battery switches to 2 minute update rate.
• Added cancel to rescue mode if user issues a change update rate command.
• Improved behavior and timeout of pairing mode in high interference situations.
• Improved response to change-ID command.

Changes made from version 3.90 to 4.10:

• Adds support for new replacement battery pack.

Changes made from version 3.70 to 3.90:

• Improved randomization of default tracking settings when user clears non-volatile memory.
• Improved pairing timeout behavior.

Changes made from version 3.60 to 3.70:

• Improved tracking performance of France T5 and TT15 legacy units on channels 3-6.

Changes made from version 3.50 to 3.60:

• Fix tracking issue with New Zealand TT15 units.

Changes made from version 3.10 to 3.50:

• Prevent false occasional low-battery report from the collar.
• France only: Added channels 3-6 capability (see notes).

Changes made from version 3.00 to 3.10:

• Adds support for latest version of field-replaceable battery pack.

Changes made from version 2.50 to 3.00:

• Added HD BarkDetect for users in Norway, Sweden, Finland and Denmark. NOTE: Once a T5 or TT15 is updated to this version of software, and set to transmit HD BarkDetect information, it can only be tracked by Alpha 100's with version 5.40 or greater software.
• Improved reliability for pairing the collar to an Alpha.

Changes made from version 2.30 to 2.50:

• Added a new dog device tracking channel for Greece units. NOTE: the Alpha 100 must have at least version 4.40 software installed to support this new channel.

Changes made from version 2.00 to 2.30:

• Fixed Astro 320 pairing issue for devices that haven't yet had a GPS fix.
• Fixed issue with training tone.