Platform tools -------------- Those tools are designed to run on the devices. They are mostly tests that can be run in firmware upgrade mode (using exec_file in utils/nwztools/scripts/). To compile those, you will need the sony nwz cross compiler. The canonical way to run them is as follows: 1) Build the tools: cd /path/to/utils/nwztools/plattools make Note that the default cross compiler prefix is arm-sony-linux-gnueabi- but it can be changed using PREFIX: PREFIX="sony-nwz-linux-gnueabi-" make 2) Embed the wanted excutable in a firmware upgrade for your device. The README in utils/nwztools/scripts contains more documentation on how to select the right target. For example if you want to embed test_display for the NWZ-E460 series, you should run: cd /path/to/utils/nwztools/scripts make exec_file UPG=test_display_nwze46x.upg NWZ_TARGET=nwz-e46x EXEC=../plattools/test_display.elf 3) Put the upgrade file on the device and trigger a firmware upgrade. Assuming your NWZ device is /dev/sdb1 and is mounted at /media/pamaury/WALKMAN, run: cd /path/to/utils/nwztools/scripts make copy_fw_upgrade UPG=test_display_nwze46x.upg NWZ_MOUNT=/media/pamaury/WALKMAN/ sudo make do_fw_upgrade NWZ_DEV=/dev/sdb1