PSR SX900 Firmware Upgrade Process - Version 1.01 to 1.05

Procedure to upgrade the Yamaha PSR SX900 to the latest version 1. 05. You can download the new update from this link. https://europe.yamaha.com/en/support/... ################# V1.04 to V1.05 Fixed a rarely occurring problem in which the instrument would not be started after a file had been removed from “Favorites.” V1.03 to V1.04 Increased the font size of the Score, the Lyrics, and the Text Viewer display. Fixed a problem in which, under a certain situation, the indication lamps (MIDI indicator) on the Mixer display would not work. Fixed a problem in which the Registration Memory function would not work properly in some cases. Fixed a problem in which the Audio Song parameters were not properly saved to Registration Memory in certain situations. Fixed a problem in which the instrument would, in certain situations, become unresponsive to operations when attempting to save a Mic Setting. Fixed other problems. V1.02 to V1.03 Added a new function: Voice Guide. Fixed other problems. V1.0 to V1.02 Now supports use with the Yamaha Expansion Manager (V2.5.3 or later). The function "Part On/Off" (for the Left, Right 1, Right 2, Right 3 or Mic part) is newly assignable to the foot pedals. Fixed a problem in which the detail settings of the "Part On/Off" function for each one of the ASSIGNABLE buttons would not be loaded properly from the Registration Memory or System Backup. Fixed other problems. #############