DSP-408 FW Update Changelog

05/02/2018 V6.0: Initial Release
08/23/2019 V6.1: Fixed LP/HP Alignment issue
02/19/2020 V6.2: Addressed a bug that caused the unit to fail after importing a DSP-408 preset that was created without a connected unit
06/28/2021 V6.21 (current): Allows for usage of new remote feature to control CH7&8 volume from the remote.