Software Update Icon



Tandem carefully develops software updates to ensure your safety and satisfaction. Please review the instructions and take time to understand the new features before beginning your update.

What's Included

This update, available for t:slim® insulin pumps purchased before April 2015,* includes an expansion of the reverse correction functionality, the ability to enter a manual bolus directly in the suggested bolus window, off-pump cartridge filling, and other features that enhance convenience.


t:slim Insulin Pump



Update Your Pump

Here are the three simple steps to update the software on your t:slim insulin pump:


Before You Begin


Please consult the Tandem Device Updater User Guide and have the following on hand:

  • Your unique Update ID Number, sent to you in an email. If you did not receive an email from us, give our Customer Support Team a call at (877) 801-6901. The Software Support Team is available between 6:00 AM to 6:00 PM Pacific Time.
  • A backup insulin delivery option, such as a syringe and fast-acting insulin, in case there are any issues updating your insulin pump.
  • Your blood glucose meter so that you can check your BG prior to starting the update.
  • A convenient time to stop all insulin delivery, detach your infusion set, and remove your cartridge. We recommend performing the update when you are ready to change your pump's cartridge.
  • A compatible computer with an internet connection. If you are using a laptop, make sure that it remains plugged in to a wall outlet during the half hour it will take to complete the software update.
  • And remember, the t:flex® and t:slim G4™ insulin pumps are not currently compatible with the Tandem Device Updater.

Install Tandem Device Updater   Download >>


Update Your Device


The Tandem Device Updater should automatically start after you install it on your computer. Follow the prompts to update your t:slim insulin pump.

If the Updater encounters a condition that will not allow you to continue, you will see an error message on your computer screen. Follow the on-screen instructions to resolve the error and continue with your update, or contact Customer Support at (877) 801-6901. If you have trouble connecting your pump or starting an update, reference the Troubleshooting section of the Tandem Device Updater User Guide.



Download Icon

Download Tandem Device Updater

The Tandem Device Updater is a software program that runs on your computer and allows you to update the software on your pump. If you’ve previously completed this installation, you can skip the download and open the Device Updater now.

Download for MAC

Download for PC




System Requirements

A computer and internet connection will be required to update your pump. Please take a minute to review the following technical requirements. In order to install Tandem’s device updater software, you will need administrator rights on your computer.

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Supported Operating Systems

  • Microsoft Windows 10 (32 or 64 bit)
  • Microsoft Windows 8.1 (32 or 64 bit)
  • Microsoft Windows 7 (32 or 64 bit)
  • Mac OS High Sierra (v10.13.x)
  • Mac OS X El Capitan (v10.11.x)†
  • Mac OS X Yosemite (v10.10.x)

Minimum Computer Requirements

  • 1 GB RAM
  • 1 GB of available disk space
  • x86 compatible 1.6 GHz processor
  • USB 1.1 port or later
  • Screen display capable of at least
    1024 by 768 pixels resolution


*t:slim insulin pumps purchased after April 2015 already include these updates.
†Must include the OS x El Capitan 10.11.4 update, which improves stability, compatibility, and security of your Mac.