> For the complete documentation index, see [llms.txt](https://docs.mtoolstec.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mtoolstec.com/software-and-apps/mtools-lite/upgrade-the-firmware-of-pixl.js.md).

# Upgrade the firmware of Pixl.js

MTools BLE provides a super easy DFU Tool for the firmware of Pixl.js devices with Bluetooth.

### DFU Tool for ChameleonUltra & ChameleonLite

<div align="left"><figure><img src="https://3395533350-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LD97pa04tZLvlPyG5f6-887967055%2Fuploads%2FOwcn923p0TDzozRW4B42%2FPixl.js%20DFU.png?alt=media&amp;token=c04f6c5c-9fb0-4e5a-b33d-423a76662d0f" alt="" width="375"><figcaption></figcaption></figure></div>

### Steps

1. Enter **Pixl.js** Tool in MTools BLE
2. Connect Pixl.js by clicking the title
3. Click to choose **Pixl.js OLED** or **Pixl.js LCD** to download the latest firmware
4. Click to choose **pixl dfu** device
5. Click start to flash the firmware