david_casserly Posted January 16, 2014 Share Posted January 16, 2014 I am unable to register my POD HD500. It doesn't matter which serial number I put it it comes up with ESN could not be verified. Please confirm the supplied USN. ( Error: 523). Quote Link to comment Share on other sites More sharing options...
TheRealZap Posted January 16, 2014 Share Posted January 16, 2014 I suggest you contact support: http://line6.com/company/contact/ you can give them a call or open a support ticket. The ESN issue sounds like you might need a service center, but support can better advise you. Quote Link to comment Share on other sites More sharing options...
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