User manual

Wunderbar v2 23-10-17

3 Firmware update

Wunderbar ﬁrmware can be updated or replaced with custom one via DFU

bootloader. It is recommended to update V2 ﬁrmware to the latest revision

available. You can get the version of ﬁrmware running on your Wunderbar

and check if it is the latest available, by logging in to Conrad Connect

dashboard [link] and navigating to your Wunderbar.

3.1 Update procedure

To start an update simply put Wunderbar into DFU mode:

1. press and hold User button (ﬁgure 11)

2. press and release Reset button (ﬁgure 11)

3. release User button

Then, verify that Wunderbar entered bootloader:

1. User led is constantly on

2. following command

$ dfu-util -l

returns similar output:

dfu-util 0.9

This program is Free Software and has ABSOLUTELY NO WARRANTY

Please report bugs to http://sourceforge.net/p/dfu-util/tickets/

Found DFU: [15a2:1000] ver=0000, devnum=22, cfg=1, intf=0,

path="20-2.1.4.4", alt=0, name="UNKNOWN",

serial="ffffffff4e45299790180014"

Wunderbar ﬁrmware can now be updated with following command:

$ dfu-util -d 15a2:1000 -a 0 -D new_firmware.bin

‘new ﬁrmware.bin‘ should be changed to path and name of new ﬁrmware

binary that you want to put on Wunderbar.

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