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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 adds Basal-IQ® technology to your pump, which helps reduce the frequency and duration of low-glucose events by using Dexcom G6 continuous glucose monitoring (CGM) values to predict glucose levels 30 minutes ahead and suspending insulin if they are expected to drop below 80 mg/dL. 


t:slim X2 Insulin Pump with Basal-IQ Technology



Update Eligibility

This update requires a prescription from your healthcare provider.

Adding Basal-IQ technology to your t:slim X2™ insulin pump requires a prescription and completion of online training before you can receive the unique Update ID Code needed to update. You can log into the t:connect portal to confirm your eligibility and start the update process.



Update Your Pump

Here are the three simple steps to update the software on your t:slim X2 insulin pump:


Before You Begin

  Basal-IQ technology only works with the Dexcom G6 CGM. If you are still using Dexcom G5 Mobile CGM and have Dexcom G5 supplies you plan to use, we recommend postponing this update until you are ready to switch to the new Dexcom G6 system.

If you are already using Dexcom G6 CGM and have an active sensor session when you update your pump, you will need to start the session again on your pump after the update is complete. The update process will NOT stop the sensor session, and you will not need to re-enter your transmitter ID. When your pump asks if you have a sensor code, tap SKIP. Your pump should backfill any data missed during the update. You can continue to view your Dexcom G6 CGM data on the Dexcom mobile app during the update process.

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

  • A convenient time to stop all insulin delivery, detach your infusion set, and remove your cartridge. This update will take 15 to 30 minutes.
  • Your unique Update ID Number, which you should receive by email once we have received your prescription (if required) and you've completed your online training. This code expires 60 days from email receipt.
  • The pump serial number (contained in the email with your Update ID Number).
  • Compatible computer with an internet connection (wired ethernet is preferred).
  • A backup insulin delivery option, such as a syringe and long-acting insulin, in case there are any issues updating your pump. Your blood glucose (BG) meter so that you can check your BG prior to starting the update. Supplies to change your cartridge. We recommend performing the update when you are ready for a new cartridge.

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 X2 insulin pump. The process should take less than 10 minutes to complete.

If the Tandem Device 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. If you are unable to continue with your update, 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. A new version of the Tandem Device Updater was released on September 4, 2020. If you have a previous version installed, you will need to download the latest version.

Download for Apple

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 the Tandem Device Updater software, you will need administrator rights on your computer.

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Supported Operating Systems

  • Microsoft Windows 10 (64 bit)
  • Microsoft Windows 8.1 (64 bit)
  • Microsoft Windows 7 (64 bit)
  • Mac OS Big Sur (v.11.0.x)
  • Mac OS Catalina (v10.15.x)
  • Mac OS Mojave (v10.14.x)

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