8-2-3. Audio8-2-4. Software UpDateThis page is control the sound effect ,from100Hz to 10KHz.In this page , you just consider the softwareupdate function.Plug USB into the 1st USB port,select "SOFTWARE UPDATE" press "OK", Thenflip the other window,perss "OK",The update isgoing work.NOTE : After software update ,turn to the FactorySetting 1 page reset all.Service ManualModel No.: HL32XSL248