Write_configuration

• out: 0x55 0xxaa XXXXXXXXXXZZ
• pause, 2 secs
• out: data block consisting of the configuration data and the WAV data block
• response: "Checksum Error\0"
• or
• response: "Checksum OK\0" (4 spaces)
• out: "WP Update Over\0"

XXXXXXXX: 4 bytes, length of data block (user settings and WAV data), little endian

ZZ: 1 byte: checksum (XOR every byte in data block)

Configuration data

256 bytes of data, same format as in “Get device settings”

Wave data block

The binary content of eight audio files (WAV format, 8000 Hz, mono, PCM). Usually the content of the following files in this particular order.

1. battery_low.wav
2. BT_close.wav
3. BT_open.wav
4. Error_Beep.wav
5. GPS_search.wav
6. GPS_search_finished.wav
7. OK_Beep.wav
8. OK1_Beep.wav

The WAV files stored in the device will be overwritten (e.g. the original german ones).

Warning

This command may damage your device. It never has so far.