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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 allows you to view Dexcom G5 Mobile continuous glucose monitoring (CGM) information directly on your t:slim X2™ insulin pump, instead of on a separate Dexcom receiver*. You will also be able to view your CGM data through Dexcom's mobile app and your pump screen at the same time. 


t:slim X2 Insulin Pump with Dexcom G5



Update Eligibility

If you don’t currently use Dexcom G5 Mobile CGM, you will need a prescription from your healthcare provider for a CGM device to take full advantage of this update.

If your pump is eligible for this update, you should have received an email from Tandem Diabetes Care with the unique update ID required for the process. If you received your t:slim X2 insulin pump in September 2017 or later, your pump was likely loaded with this software update before it was shipped, and you would not have received an email. If this is the case, there are no new updates for your pump at this time. If you are unsure if your pump is eligible for this update, please call Customer Technical Support at (877) 801-6901 for assistance.



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.



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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


* Dexcom G Mobile CGM System sold separately. The Dexcom G5 Mobile CGM transmitter can only be paired with one medical device (either a Dexcom receiver or t:slim X2 Pump) and one consumer device (phone or tablet) at the same time. CGM coverage may vary based on insurance. Please consult your CGM supplier for coverage information.
† Must include the OS x El Capitan 10.11.4 update, which improves stability, compatibility, and security of your Mac.