Hi All ,
I have a problem with upgrade ios of UC520 :
IOS installed : uc500-advipservicesk9-mz.124-20.T2.bin . When i upgraded to uc500-advipservicesk9-mz.124-22.YB8.bin ,I can't emit calls by against i can receive the calls . Downgrade to old Ios version resolve the problem .
I don't know what's the problem ,Can anyone help me ?
Regards