Fender Tone Master Princeton Reverb Firmware and IR Manager App Update

Version Information 6/25/2025

Tone Master Princeton Firmware – v2.0.30 download link

• Firmware update for Tone Master Princeton Reverbs using a Jensen C10R speaker.
• Added IR Manager app support and additional factory IRs.

IR Manager App

Mac – v1.0.0.106516 download link

PC – v1.0.0.106516 download link

IR Manager User Guide

IR Manager System Requirements:

• macOS Monterey 12.4 and later
• Windows 10 22H2 and later
• Windows 11 22H2 and later

Release Notes:

• Initial release

NOTE: IR Manager App is not required for updating Tone Master Amplifier firmware. The amplifier must be updated to v2 firmware before using the IR Manager App.

Firmware Update Procedure:
 

1. Download the firmware update file at the top of this article.
2. Locate the micro-USB port and firmware update button on the underside of the amplifier chassis beneath the OUTPUT POWER section.
3. Power on the amplifier while holding the firmware update button for at least 3 seconds.
4. Once booted (approximately 10-15 seconds), the firmware update LED next to micro-USB port will slowly blink to indicate that the amp is in firmware update mode.  The power jewel located on the front of the chassis will also cycle between amber and red.
5. Connect a USB data cable from the Tone Master amplifier to your MAC or PC.  USB Charging cables may not work if data lines are not connected.
6. The amplifier will appear on your computer as a mass storage device named FENDER_AMP (similar to USB flash and external hard drives)
7. Drag and drop the firmware update .img file onto the FENDER_AMP folder.  Do not open or double click .img file.
8. The Update LED will blink quickly to indicate the update is being applied, this process should continue for approximately 30-60 seconds.
9. Once the update has completed successfully the firmware update LED will stop blinking and remain ON and the amplifier will auto eject from the computer.  Note some MAC user may receive a Disk Not Ejected Properly message.  This is normal and not an error.
10. If update was successful, disconnect the USB cable and power cycle the amplifier to return to normal operation.
11. If the update was unsuccessful, the firmware update LED will stop blinking and remain OFF. Power cycle the amplifier and repeat update procedure beginning at step 3.

Factory Reset
A factory reset returns the Tone Master Amplifier to its original factory settings and clears any user IRs stored on the amp.  Initiate a factory reset by holding the firmware update button with the amplifier powered on until the firmware update LED turns on (approximately 10 seconds).  Power cycle the amplifier to return to normal operation.

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Fender Tone Master Princeton Reverb Firmware Updates 

Owners of Tone Master Princeton Reverb amplifiers can update their amplifiers with modified firmware that can enhance playability for some users.  No update is necessary unless the modified version is desired.  Stock firmware as shipped from the factory is also available below.

System Requirements:

• Windows 10 and higher
• macOS X 10.7 and higher

Release Notes:

ToneMaster_Princeton_VintageTapers_2.0.15

• Vintage accurate firmware based on vintage and 65 Reissue tube amplifiers.
• Stock firmware loaded on Tone Master Princeton Reverb amplifiers.
• Jensen C10R speaker line out IRs captured with Shure SM57 and Royer 121 microphones.

Tone Master Princeton Vintage Firmware 2.0.15

ToneMaster_Princeton_2.0.15

• Modified reverb control for easier fine tuning at lower settings.
• Jensen C10R speaker line out IRs captured with Shure SM57 and Royer 121 microphones.

Tone Master Princeton Reverb Mod Firmware 2.0.15

Firmware Update Procedure:
 

1. Download and unzip desired firmware version at the top of this article.
2. Locate the micro-USB port and firmware update button on the underside of the amplifier chassis beneath the OUTPUT POWER section.
3. Power on the amplifier while holding the firmware update button for at least 3 seconds.
4. Once booted (approximately 10-15 seconds), the firmware update LED next to micro-USB port will slowly blink to indicate that the amp is in firmware update mode.  The power jewel located on the front of the chassis will also cycle between amber and red.
5. Connect a USB data cable from the Tone Master amplifier to your MAC or PC.  USB Charging cables may not work if data lines are not connected.
6. The amplifier will appear on your computer as a mass storage device named FENDER_AMP (similar to USB flash and external hard drives)
7. Drag and drop the firmware update .img file onto the FENDER_AMP folder.
8. The Update LED will blink quickly to indicate the update is being applied, this process should continue for approximately 30-60 seconds.
9. Once the update has completed successfully the firmware update LED will stop blinking and remain ON and the amplifier will auto eject from the computer.  Note some MAC user may receive a Disk Not Ejected Properly message.  This is normal and not an error.
10. If update was successful, disconnect the USB cable and power cycle the amplifier to return to normal operation.
11. If the update was unsuccessful, the firmware update LED will stop blinking and remain OFF. Power cycle the amplifier and repeat update procedure beginning at step 3.