JamesMunns[m]: Just tried that

```
root# sudo dfu-util -a 0 -d 2341:0366 -s 0x08040000 -D *.bin
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/

dfu-util: Warning: Invalid DFU suffix signature
dfu-util: A valid DFU suffix will be required in a future dfu-util release
Opening DFU capable USB device...
Device ID 2341:0366
Device DFU version 011a
Claiming USB DFU Interface...
Setting Alternate Interface #0 ...
Determining device status...
DFU state(2) = dfuIDLE, status(0) = No error condition is present
DFU mode device DFU version 011a
Device returned transfer size 4096
DfuSe interface name: "Internal Flash  2MB   "
Downloading element to address = 0x08040000, size = 1988
Erase   	[=========================] 100%         1988 bytes
Erase    done.
Download	[=========================] 100%         1988 bytes
Download done.
File downloaded successfully
```

No dice