Press and hold the AR button while powering up the radio, then press the AR button to step through a test mode, finally revealing the Firmware version.
Turn the radio off and back on again to return to normal operation.
If the VX-1R does not reveal any number after repeatedly pressing the AR button, your radio is version A106 (the latest version or later)
GW1NGL NA7KR Kevin Roberts Ham Radio
Page last updated on 09/10/2012 by Kevin Roberts NA7KR a colection of Ham Radio and Electronic Information