https://community.sony.se/t5/portable-audio/walkman-nwz-b173-problems-transferring/m-p/1487086#M2158 <P>when trying to transfer my play list on to my MP3, message appears( It is not possible to obtain the device's certificate. Please contact the device manufacturer for a firmware update or for other steps to resolve this problem.) Can any one help please</P> Sat, 11 Jan 2014 18:30:08 GMT LUXOR1990 2014-01-11T18:30:08Z https://community.sony.se/t5/portable-audio/walkman-nwz-b173-problems-transferring/m-p/1487086#M2158 <P>when trying to transfer my play list on to my MP3, message appears( It is not possible to obtain the device's certificate. Please contact the device manufacturer for a firmware update or for other steps to resolve this problem.) Can any one help please</P> Sat, 11 Jan 2014 18:30:08 GMT https://community.sony.se/t5/portable-audio/walkman-nwz-b173-problems-transferring/m-p/1487086#M2158 LUXOR1990 2014-01-11T18:30:08Z