Before You Begin Checklist

Familiarize yourself with this checklist to minimize any disruptions in therapy:

A. Timing
B. Cartridge and Insulin on Board
C. Continuous Glucose Monitoring (CGM)
D. Backup Supplies
E. Update ID Number
F. Pump Settings
G. Tandem Diabetes Care USB Cable

Timing

• Choose a convenient time to stop all insulin delivery. You will need to disconnect your infusion set from your body during the software update.
• You may want to perform the software update during your heath care provider's business hours in case there are any issues with updating and you need to switch to a backup therapy method
• To start the update, your pump battery must have at least a 20% charge
• The update process alone should take approximately 10 minutes to complete
• Following the software update, you will need to complete a cartridge load sequence (Step B), resume your CGM (Step C), and (optional) pair to the t:connect mobile app

Cartridge and Insulin on Board

• If you have fewer than 120 units left in your current cartridge, we recommend updating the software on your pump when you are due for a cartridge change, so that you don't waste any of the insulin left in your cartridge. Be sure to have supplies to load a new cartridge after the software is updated.
• If you have at least 120 units remaining in your current cartridge, you can keep the cartridge on your pump while you go through the load sequence. You will need to go through the Fill Tubing step following the update, which requires a minimum of 10 units of insulin.
• Make a note of your insulin on board (IOB). After you update your pump, the insulin on board will be reset to 0. If you delivered a bolus shortly before updating, you may still have insulin working to lower the glucose in your body. This insulin will not be displayed on your pump, or in the bolus calculator. 

Continuous Glucose Monitoring

• You do not need to stop your current CGM sensor session before the update
• Your pump automatically disconnects from your CGM sensor session during the software update process, but you will be able to resume your current session after the update is complete

Backup Supplies

• Have a backup insulin delivery option available, such as a syringe and long-acting insulin in case there are any issues updating your insulin pump
• Make note of your current sensor reading prior to performing the update or have a blood glucose meter so that you can check your blood glucose

Update ID Number

• Have your unique Update ID Number available. The Tandem Device Updater may ask you to enter this number into your pump twice during the update process. You will be prompted every time it is needed.

Where can I find my Update ID Number?
The Update ID Number is located in your account under “My Pump” and then “Software Update ID Available” once you’ve completed any preliminary activities. If the Update ID Number is not used within six months, it will expire and be automatically replaced by a new number.

Pump Settings

• You’ll want to have a list of your current pump settings and serial number available in case there are any issues updating your pump

Where can I find my pump settings?
You can locate your current pump settings from the t:connect web application. Normally, your pump settings shouldn’t be erased or changed during the software update process. However, we recommend that you check your settings after the update to confirm.

Note: The screens within this article are used to demonstrate how to use features within the application, and are examples only. They should not be considered as suggestions for your individual needs.

Tandem USB Cable

• You will need the USB cable that came with your Tandem Diabetes Care insulin pump in order to complete the update. The Tandem Device Updater requires access to the USB port on your trusted computer.

What if I no longer have the Tandem USB Cable?
If you cannot find your Tandem USB cable, you can purchase a replacement on our pump accessory store.