Since all our tests are routinely reviewed to make sure they are accurate and performing optimally, software updates occur periodically. Usually, software updates are needed when something has been improved or we have a new test. We recommend updating your software when you first receive the unit, and then just periodically check the website.  If you find you are getting odd results, this is a good time to double check your software, as well.  To update the software, you can see the installation video on our website (Bionote Vcheck V200 Installation Set Up and Calibration Test Guide) for step-by-step instructions. We also send out updates via email, so please make sure you register through our warranty page so we can send this right to your inbox! Our current version is 23.3.