# 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="https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2FhSliXlg9tyeo28nGF4kY%2FCapture.PNG?alt=media&#x26;token=a0fc13cd-0277-40d1-a459-9598a3713c26" alt=""><figcaption></figcaption></figure>

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

* Click 'Select Device' button.

<figure><img src="https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2FGOA87QATkI6auUCJG7vs%2FCapture.PNG?alt=media&#x26;token=a4df7017-7c13-4b92-bada-9e250c778ca9" alt=""><figcaption></figcaption></figure>

* A dialog box should pop up as shown below.

<figure><img src="https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2F27bQSRMVyluUNHKSGzIB%2FCapture.PNG?alt=media&#x26;token=2980577e-ec71-4ecd-890e-29d82cfb57ff" alt=""><figcaption></figcaption></figure>

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

![](https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2FPkceq9fYKrQxoB4VqgFg%2FCapture.PNG?alt=media\&token=177dcffd-a793-45c3-ba88-88b5c8ce9f8f)

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

* Click 'Select Device' button once more.

![](https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2Fs7JnAAt6Hshi4FXXb6lV%2FCapture.PNG?alt=media\&token=ac8fb668-1e0e-40d4-8568-b098e217541d)

## Step 4. Select Device (DFU Target)

* A dialog box should pop up as shown below.

![](https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2FG2f1NssZZIA2m1xkhmHT%2FCapture.PNG?alt=media\&token=3c5b888b-54a2-4fff-84e5-78716ecebcb1)

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

![](https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2FwtjeOU5wp1LRC6VdtxqS%2FCapture.PNG?alt=media\&token=496343f4-f813-4d54-a54a-513d98addad8)

## Step 5. Firmware update in progress

![](https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2FZYwdMYjhmNkVkyFcdLAc%2FCapture1.PNG?alt=media\&token=b3767516-1781-4b02-a123-2508de74201f)

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

![](https://2027676102-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6BJWlEY36X5PnXFgzbFP%2Fuploads%2FjMgoMVSZtzEb5a0ATnBk%2FCapture.PNG?alt=media\&token=8ecdc5b8-7e99-4ede-9d80-e6fd3c7dfb38)