Firmware Upgrade

Firmware is updated by connecting Booster to a PC via the front-panel USB port.

Bootloader

Booster must be placed in bootloader mode to update firmware. There are two ways to do this:

• Power cycle Booster while pressing DFU Bootloader button (e.g. with a paper-clip).
• The bootloader VCP command

After the firmware update is complete, Booster must be power-cycled to bootloader mode.

Linux

• install dfu-util
• download the latest firmware dfu file from github
• find the "alt" number of the device's internal flash by running dfu-util -l. An example output is shown below, with the internal flash at alt 0.

> dfu-util 0.9
> 
> Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
> Copyright 2010-2016 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/
> 
> Found DFU: [0483:df11] ver=2200, devnum=29, cfg=1, intf=0, path="3-5", alt=3, name="@Device 
Feature/0xFFFF0000/01*004 e", serial="377533563436"  
> Found DFU: [0483:df11] ver=2200, devnum=29, cfg=1, intf=0, path="3-5", alt=2, name="@OTP Memory /0x1FFF7800/01*512 e,01*016 e", serial="377533563436"  
> Found DFU: [0483:df11] ver=2200, devnum=29, cfg=1, intf=0, path="3-5", alt=1, name="@Option Bytes  /0x1FFFC000/01*016 e", serial="377533563436"  
> Found DFU: [0483:df11] ver=2200, devnum=29, cfg=1, intf=0, path="3-5", alt=0, name="@Internal Flash /0x08000000/04*016Kg,01*064Kg,07*128Kg", serial="377533563436"

• update the firmware by running dfu-util -D update.dfu -a <alt>, <alt> replaced by the number above (e.g. dfu-util -D update.dfu -a 0)

Windows

• download DfuSe Demo
• download the latest update.dfu from github
• launch DfuSeDemo
• Select Internal Flash from the Select target(s) menu
• in Upgrade or Verify Action click Choose and select firmware update file
• click Yes in dialog box
• wait for operation to complete, then power cycle the device

Errors

$ dfu-util -l dfu-util: Cannot open DFU device 0483:df11.

Try entering bootloader using alternate method.