> For the complete documentation index, see [llms.txt](https://support.onegiantleap.co.nz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.onegiantleap.co.nz/general/updating-firmware/how-to-update-the-power-meter-firmware-using-the-web-browser.md).

# How to update the power meter firmware using the Web Browser

## Step 1. Navigate to the Web Bluetooth Secure DFU webpage

* Head to: <https://thegecko.github.io/web-bluetooth-dfu/examples/web.html>
* Click 'Choose a firmware package' and select the relevant firmware package (downloaded separately).

<figure><img src="/files/mJt3V3gUPe0FxTtYbCX5" alt=""><figcaption></figcaption></figure>

## Step 2. Select Device (Power Meter Name)

* Click 'Select Device' button.

<figure><img src="/files/qxNs5nWzKaJw5y7hXHWO" alt=""><figcaption></figcaption></figure>

* A dialog box should pop up as shown below.

<figure><img src="/files/lmWfOhLHvAECc06811ht" alt=""><figcaption></figcaption></figure>

* Select the appropriate device ('PwrMeter').
* Once selected, click the 'Pair' button.

![](/files/AdcYqsT8tAeOAKjgnsTF)

## Step 3. Power Meter is now in bootloader mode

* Click 'Select Device' button once more.

![](/files/7HMqsCjgjYNWKDmCSj4E)

## Step 4. Select Device (DFU Target)

* A dialog box should pop up as shown below.

![](/files/ASoTV4tAnmcHrFQ05mZH)

* Select the device labelled 'DFU Target'.
* Once selected, click the 'Pair' button.

![](/files/bisb88cC072FdC7DygaV)

## Step 5. Firmware update in progress

![](/files/637DsCVLQR3pZpmHoFpf)

* When the firmware upload has been successful, the screen below will show.

![](/files/43J8GnsRU4eWcG2H0MVz)