RC-505mkII System Program ( Ver.1.10 )

Please check the version of the system working on your RC-505mkII before downloading the archive file.
  1. Hold down the [ MENU ] button , and push [ POWER ] switch. Then it will turn on.
    The display indicates the current system version.
  2. Press the [ POWER ] switch to turn off the power.

[ Ver.1.10 ] MAR 2022
Additional Functions
  • Expanded Effects—Effect algorithms and parameters from legacy RC products have been added to a number of effect types, allowing users to reproduce favorite settings from previous units. This includes changes to Ring Mod, Slow Gear, Transpose, Pitch Bend, Octave, Roll, and other effects.
  • Step Rate—A Step Rate parameter has been added to the Filter, Phaser, Flanger, Isolator, and Auto Pan effects, making it easier to create interesting rhythmic effects.
  • Mic Level Quick Control—In addition to other input and output levels, the microphone level can now be adjusted while performing using a panel knob assignment.
  • Vocoder Enhancement—A Carrier Thru function has been added to the Vocoder effect, allowing users to mute the dry sound for increased clarity.
  • Input Thru—An assignable Input Thru function has been added to quickly mute or unmute the input signal while performing. 
Bug Fixes
  • Auto Rec response and function improvements.
  • Fixed a noise issue that could occur when Rec Quantize was turned off.
  • Fixed Sync Setting issues that could cause audio stretching and glitching problems regardless of the setting.
  • Fixed audio record/playback problems that could occur when using rhythm intros.
  • Fixed a problem where control function (CTL FUNC) assignments might not work correctly when the system preference was set to Memory.   
  • Expanded the sensitivity range of the noise suppressors on the input channels.
  • Fixed an issue where the track playback volume could vary when the stop mode was set to Fade Out.
  • Fixed issues that would cause a system error message to be displayed.
[ Ver.1.04 ] NOV 2021
Bug Fixes
The following bugs have been fixed.
  • Noise is sometimes recorded in overdubbing during reverse playback.
  • Some parameters sometimes fail to function correctly.
  • Some effects sometimes fail to synchronize with loops or tempos.

  • RC-505mkII
  • USB cable
    * The update is carried out with the unit and the computer connected via USB.
    * Provide a cable suitable for connection to the computer you're using.
  • Computer (Windows or Mac) equipped with a USB port compliant with USB 2.0 or USB 3.0.

  • Never apply this update data to any product other than the RC-505mkII. This update data may destroy the data or system program of other products.
  • Never power-off your RC-505mkII while the update is in progress!
    If a power failure or similar accident occurs during the update process, the RC-505mkII won't be able to start up in normal operating mode. This will require servicing, so you will need to contact Roland service center near you if this occurs.
  • We regret that we are unable to answer questions regarding the update procedure using this system program. Please perform the update responsibly, following the directions given in this document.

Please open/extract the downloaded "rc505mk2_sys_v110.zip" file on your computer to get the "rc505mk2_sys_v110" folder.
Please make sure you have unzipped the downloaded update file.

  • You must not rename the extracted file.
  • Never turn off the RC-505mkII's power while the update is in progress. Otherwise the system program or the RC-505mkII itself may be destroyed.
Please install the extracted system program file into your RC-505mkII according to the following procedure.
  1. Hold down the [ EXIT ] button, and push [ POWER ] switch. Then it will turn on.
    After a short interval, the message "PREPARING..." appears on the display.
  2. Connect the computer by a USB cable.
    Once connected, the message "CONNECTED." appears on the display.
    A "RC-505MK2" icon (drive) appears on the computer.
  3. Open the "RC-505MK2" icon.
    Copy (drag and drop) all the files included in the "rc505mk2_sys_v110" folder into the "RC-505MK2" icon.
  4. After the copy is complete, eject the "RC-505mkII" icon(drive) from the computer.
    [ With Windows computer ]
    Right-click on the "RC-505MK2" icon in My Computer (or the "Removable Disk (*:)" icon) and execute "Eject."
    [ With Mac computer ]
    Drag the "RC-505MK2" icon to the Trush icon in the Dock.

    The message "UPDATE ?" appears on the display.
  5. Press [ENTER] to execute the update.
    The message "WRITING..." appears on the display.
  6. When the update is complete, the message "COMPLETE" appears on the display.
    Then push [ POWER ] switch to turn off the power.