---
title: XU316 Firmware upgrade with DFU
---

# I. XU316 Firmware upgrade with DFU

This guide primarily focuses on firmware upgrades in a Windows environment; for other computer systems, please refer to the following link:

[XMOS DFU](https://www.xmos.com/documentation/XM-014926-PC-1/html/doc/programming_guide/tutorials/freertos/examples/dfu.html#dfu)

## Prerequisites
To upgrade the firmware on a Windows system, you will need the following tools:

- [zadig-2.8.exe](/assets/download/zadig-2.8.exe)
- [dfu-util-0.11](/assets/download/dfu-util-0.11-binaries.tar.xz)

## II. Firmware Upgrade Process

### 2.1 Zadig Configuration

1. Before upgrading the firmware, ensure that the data cable is properly connected.
2. Open the Zadig tool and select as shown in the figure:
   ![zadig Configuration Image](/assets/images/screenshots/zadig_setting.png)
3. Click on "Reinstall Driver" in the figure and wait for the success prompt.

### 2.2 Upgrade via dfu-util

1. Navigate to the root directory of the dfu-util executable file:
   `dfu-util-0.11-binaries\win64` or `dfu-util-0.11-binaries\win32`, depending on your Windows version. The following instructions are for the win64 version.

2. Enter the command `dfu-prefix.exe --version`

3. Receive the prompt "please report bugs to http://sourceforge.net/p/dfu-util/tickets/" to indicate success.

4. Copy the firmware to be upgraded into the `dfu-util-0.11-binaries\win64` directory.

5. Enter the command: `dfu-util -e -d 4000 -a 1 -D example_ffva_ua_adec_upgrade.bin`
Note that `example_ffva_ua_adec_upgrade.bin` is a placeholder and should be replaced with the actual firmware file name you wish to upgrade.

6. After running, **you will receive the following prompts indicating a successful upgrade**:

```bash
dfu-util 0.11

Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2021 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to http://sourceforge.net/p/dfu-util/tickets/ 

Warning: Invalid DFU suffix signature
A valid DFU suffix will be required in a future dfu-util release
Opening DFU capable USB device...
Device ID 20b1:4001
Run-Time device DFU version 0101
 Claiming USB DFU Interface...
Setting Alternate Interface #1 ...
Determining device status...
DFU state(2) = dfuIDLE, status(0) = No error condition is present
DFU mode device DFU version 0101
Device returned transfer size 4096
Copying data from PC to DFU device
Download        [=========================] 100%       331776 bytes
Download done.
DFU state(7) = dfuMANIFEST, status(0) = No error condition is present
DFU state(2) = dfuIDLE, status(0) = No error condition is present
Done!
```