Basal-IQ Technology

Software Updates

Please review the information and instructions below so you understand the new features before you update.

What is Included

This update adds Basal-IQ technology to your insulin pump, which helps protect against lows by using values from compatible continuous glucose monitoring (CGM)* to predict glucose levels 30 minutes ahead and suspending insulin if they are expected to drop below 80 mg/dL.

Before You Begin

This update requires a prescription and completion of online training, which must be initiated through your account in order to update your pump software.

Basal-IQ Technology with Dexcom G6 CGM

Confirm your eligibility to request a software update!

Three Simple Steps to Update


Get Ready to Update

You must have completed the prescription process mentioned above and have received your Update ID Code to proceed.

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

  • 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 Code, 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 the Update ID Code)
  • Compatible computer with an internet connection (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 software update
  • Supplies to change your cartridge. We recommend performing the update when you are ready for a new cartridge.

Note: 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.


Install Tandem Device Updater

The program should automatically start once installation is complete. If it does not start automatically, locate the icon on your computer’s desktop, in the program folder (PC) or in the applications folder (Mac).


Update Your Pump

Follow the prompts to update your t:slim X2 insulin pump. The process should take less than 10 minutes to complete.

Note: 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. Reference the Troubleshooting section of the Tandem Device Updater User Guide, if you have trouble connecting your pump or starting an update.


Download Updater

Tandem Device Updater is a program that runs on your desktop computer and allows you to update your pump software. If the software installed on your computer is older than version 5.4, you will need to download and install the new software version.