| CPC H04R 25/505 (2013.01) | 27 Claims | 

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               1. A set of hearing devices comprising: 
            a first hearing device configured to be worn at a first ear of a user; and 
                a second hearing device configured to be worn at a second ear of the user; 
                wherein each of the first and second hearing devices comprises: 
                an output transducer, 
                  a wireless communication interface, 
                  a processing unit, and 
                  a memory unit; 
                wherein the memory unit of the first hearing device comprises first setting data for the first hearing device; 
                wherein the memory unit of the second hearing device comprises second setting data for the second hearing device; 
                wherein the memory unit of the second hearing device also comprises first setting backup data for the first hearing device; 
                wherein the memory unit of the first hearing device also comprises second setting backup data for the second hearing device; and 
                wherein the processing unit of the first hearing device is configured to validate the first setting backup data, and/or wherein the processing unit of the second hearing device is configured to validate the second setting backup data. 
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