hi Russ, >> Are you sure you have the proper kernel code loaded with the test >> firmware code that creates this sysfs file? Without that, this test >> will not work. >Nevertheless, the error message you reported in your first email indicates >that the test_firmware device may not be present. Did you verify that the running >system reports the expected configs? What does the following command show? ~# zgrep CONFIG_TEST_FIRMWARE /proc/config.gz CONFIG_TEST_FIRMWARE=y best regards,