What is the UPGRADE location of the switch for? 31 March 2023 10:04 Updated See Chapter 4, point 12. ART of the manual of an AF amplifier bit. Related articles 4. CONNECTION PANELS - DESCRIPTION How much power do you need? What is the RESCUE location of the switch for? 1. SOFTWARE AND FIRMWARE INSTALLATION AND MAINTENANCE 5.3 PERSONAL COMPUTER and DIGITAL REMOTE CONTROL (DRC MP)