> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pulseairtest.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Software downloads

Keep your Pulse controller software up-to-date by downloading update packages from the <a href="https://www.pulseairtest.com/software-download.html" target="_blank">Software Download</a> page of Pulse Online.
Software updates will include bug fixes and new features to improve your Pulse testing experience.

<Card title="Software Downloads" icon="cloud-arrow-down" href="https://www.pulseairtest.com/software-download.html" horizontal>
  Download the latest software for your Pulse controller.
</Card>

## Software update alert

Pulse Online will alert you if it detects that a new software update is available for your controller. It determines this by comparing the software version used in the last test file uploaded to the latest software version available.

<img src="https://cdn.sanity.io/images/m16cqsyp/production/4240910040c8624aa6c99ba90693983f9829d493-1680x911.png" alt="Pulse Online update available" class="border" />

## Downloading the latest software

If you have multiple controllers or air receivers, you can always download the latest software package from the <a href="https://www.pulseairtest.com/software-download.html" target="_blank">Software Download</a> page.

### Current V5 software update process

If you have a Pulse 3.0 controller or a Pulse 2.0 controller running V5 software, follow the instructions below to update to the latest software package:

* On the <a href="https://www.pulseairtest.com" target="_blank">Pulse Online</a> website, go to the *Tools > Software Downloads* page
* Select “Pulse 3.0” or “Pulse 2.0” and download the V5 software package using the *Download* button
* Copy the downloaded file into the root folder of an empty USB flash drive
* Follow the <a href="/servicing/software-updates#manually-updating-via-usb-flash-drive">manually updating via USB flash drive</a> instructions to complete installation

### Older V4 software update process

If you have an older Pulse 2.0 controller that is running V4 software, follow the instructions below to update to the latest V4 software package:

<img src="https://cdn.sanity.io/images/m16cqsyp/production/b853c16a25c40e308c513bb3b4ce095604957ea7-1680x679.png" alt="Pulse Online downloading V2 software" class="border" />

* On the Pulse Online website, go to the *Tools > Software Downloads* page
* Select "Pulse 2.0" and download the V4 software package using the *Download* button
* Copy the downloaded file into the root folder of an empty USB flash drive
* Turn on your controller and wait until powered up
* Insert the USB flash drive into the USB port on top of the controller and select *Software* from the main menu
* Verify that the software version matches the file downloaded and click the *Install* button
* The software update will begin and the system will reboot once installation is complete

<Tip>
  Your Pulse 2.0 controller will be upgraded to the latest V5 software the next time it comes in for a service.
</Tip>