KATANA System Program (Ver.4.00)

This "KATANA System Program" is not compatible for KATANA Mk II series.

Use BOSS TONE STUDIO for KATANA Version 3 as a set with KATANA series version 4.

Please check the version of the system working on your KATANA before downloading the archive file.

  1. Turn the POWER switch on while holding down the [ TAP ] button.
  2. If the indicators light up as described below, the system is at the latest version.
    • When the [ POWER CONTROL ] switch is adjusted to "0.5W," the indicator for "BOOSTER/MOD" lights up.

    If the indicators light up in a different way than just described, perform an update.
  3. When you have finished verifying the version, turn off the power.

* Don't perform the update if the product is already up-to-date.

[ Ver.4.00 ] DEC 2019
Katana Version 4 Newly Added Features
  • Effects expanded to 65 total types; Heavy Octave, Stereo Delay, and Pan Delay added
  • New Pedal FX section; Wah and Pedal Bend effects can be set up in BOSS Tone Studio
  • Dedicated mode for using as a slave amp for the Katana Mk II's Stereo Expand feature (except KATANA-50)

[ Ver.3.02 ] JAN 2019
Bug Fixes
The following bugs were fixed.
  • Popping noise occurs when TONE SETTING is switched.
  • The SYSTEM parameter set in BOSS TONE STUDIO is initialized when KATANA version 2 is updated to version 3.

[ Ver.3.01 ] DEC 2018
Bug Fix
The following bug was fixed.
  • The minimum value and maximum value settings of an expression pedal specified by "ASGN" return to their default values when the power is turned off.

[ Ver.3.00 ] DEC 2018
Additional Functions
  • When using reverb or other stereo effects, USB Audio OUT carries the stereo signal.
  • "GE-10" was added to TYPE for EQ (PATCH EQ) and GLOBAL EQ.
  • "95E Pedal Wah" and "Roland DC-30 Analog Chorus-Echo" were added to TYPE for MOD/FX.
  • It is now possible to assign the parameters you want to the effect knobs on KATANA's top panel.
  • You can assign parameters to expression pedals with greater flexibility.

[ Ver.2.04 ] JAN 2018 ( Except KATANA-Artist )
Bug Fix
The following bug was fixed.
  • When the POSITION value for GLOBAL EQ has been set using BOSS TONE STUDIO, the setting is sometimes not correctly applied to the audio.

[ Ver.2.03 ] ( Except KATANA-Artist )
Bug Fixes
The following bugs were fixed.
  • When switching between BANK A and B using a FS-5U unit connected to the EXP PEDAL jack on the GA-FC, in extremely rare cases, no sound is produced.
  • When pressing and holding TAP on the GA-FC to switch between setting either the DELAY or DELAY2 delay time, the indicator on the GA-FC sometimes fails to flash.

[ Ver.2.02 ] NOV 2017 ( Except KATANA-Artist )
Bug Fixes
The following bugs were fixed.
  • When TONE SETTING is set to "PANEL," after using the GA-FC (foot controller) to set respective effects to "OFF" and then again selecting "PANEL," the respective effects return to "ON."
  • Selecting a TONE SETTING for which EQ is set to "OFF" yields sound for which EQ is set to "ON."
  • When a MIDI Program Change message and Control Change message are received simultaneously, the Control Change message is not applied.
  • When the unit is updated to version 2.01, all TONE SETTING Program Change numbers are set to "1." (This occurs when updating from version 1 to version 2.01.)
    * Use BOSS TONE STUDIO for KATANA Version 2 to set the Program Change number for each TONE SETTING.
  • When the unit is updated to version 2.01, the SEND/RETURN values for BANK A and "PANEL" are set to "OFF." (This occurs when updating from version 1 to version 2.01.)
    * Use BOSS TONE STUDIO for KATANA Version 2 to set SEND/RETURN to "ON."

[ Ver.2.01 ] OCT 2017 ( Except KATANA-Artist )
Additional Functions
Please refer to the "KATANA Owner's Manual" for detailed information in the [ Owner's Manuals ].
To make settings for added functions, use BOSS TONE STUDIO for KATANA Version 2.
  • A function to switch between BANK A/B has been added to TONE SETTING.
  • "PHASE 90E" and "FLANGER 117E" were added to TYPE for MOD/FX.
  • "SDE-3000" was added to DELAY TYPE.
  • DELAY2, EQ (PATCH EQ), and GLOBAL EQ effect modules were added.
  • SEND/RETURN is now settable for each individual TONE SETTING value.
  • Setting the PC and CC numbers received by MIDI is now possible.

[ Ver.1.02 ] OCT 2016 ( Except KATANA-Artist )
Functionality Improvements
  • Support for BOSS TONE STUDIO for KATANA was added.
  • Noise when switching effects was reduced.
Bug Fix
The following bug was fixed.
  • No sound produced immediately after making a USB connection.

  • 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 KATANA. This update data may destroy the data or system program of other products.
  • Never power-off your KATANA while the update is in progress!
    If a power failure or similar accident occurs during the update process, the KATANA 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 "" file on your computer to get the two update files named "ROMINFO.TXT" and "KATANARM.BIN" in the "katana_sys_v400" folder.
Please make sure you have unzipped the downloaded update file.

  • You must not rename the extracted files.
  • Never turn off the KATANA's power while the update is in progress. Otherwise the system program or the KATANA itself may be destroyed.
Please install the extracted system program files into your KATANA according to the following procedure.
  1. Adjust the [ MASTER ] knob to minimum.
    * Do not connect the KATANA and the computer yet.
  2. Turn the POWER switch on while holding down both the [ CH1 ] and [ PANEL ] Tone Setting buttons.
    The indicators for the [CH1] ~ [CH4] buttons flash.
  3. Connect the computer to the KATANA's USB port by a USB cable.
    The indicators for the [CH1] through [CH2]/[CH4] buttons stop flashing and stay lighted, and a "BOSS_KATANA" drive appears on the computer screen.
  4. Open the BOSS_KATANA icon.
    "Removable Disk (*:)" may appear instead of the BOSS_KATANA icon.
  5. Copy (drag and drop) all the files included in the "katana_sys_v400" folder into the "BOSS_KATANA" icon.
    * Do not copy the "katana_sys_v400" folder.
  6. Disconnect the BOSS_KATANA from the computer.
    With Windows
    Right-click on the "BOSS_KATANA" icon in My Computer (or the "Removable Disk (*:)" icon) and execute "Eject."
    With Mac
    Drag the "BOSS_KATANA" icon to the Trush icon in the Dock.
  7. Disconnect the USB cable.
    The [PANEL] button flashes.
  8. Press [ PANEL ] button to start the update process.
    While the update is in progress, the "EFFECTS" indicators light up.
  9. When the update has finished, the "EFFECTS" indicators slowly flash simultaneously.
  10. Turn the KATANA power off.
    This completes the update operation. The new system program runs at the next startup.
    Follow the procedure for verifying the version to verify that the version has been updated.


Quick Links