Version 1.5.1

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To install this firmware, please view our guide on Updating Firmware.

Release Notes

Version Number

1.5.1

Date

[2026-09-23]

MD5

75f14fd5e3961acff208d154e1ea8c9f

General

  • New: Overclocking and Force Original Hardware are now adjustable in-game 1

  • New: Added ‘Off’ option for overclock which can be used in conjunction with other Hardware settings

Core

  • Improved: CPU I-cache behavior

  • Improved: Horizontal Upscaling and Progressive Output performance

  • Fix: Regression with video cropping for certain games

OS

  • New: Library customization for Unknown Cartridges. Game title, developer, publisher, and more can now be customized for unknown cartridges in your Library 2

  • New: Optimized Library defaults and reset options. Newly optimized default settings for Auto Overclock, Horizontal Upscaling, Progressive Output, and more for the entire N64 library

  • New: Create Memory from In-Game Menu. You can now create a new Memory directly from the In-Game Menu in addition to the hotkey. From the In-Game Menu navigate to the + tile on the right side of the Memories list and press A to ‘Create Memory’

  • New: Added options to reset to default Hardware and Advanced, or Original Display Mode configurations for your entire cartridge Library 3. Navigate to Settings → System → Maintenance for reset options

  • New: You can now view the default or currently selected Virtual Accessory when using a wireless or USB controller. Navigate to ‘Hardware’ → ‘Virtual Accessory’ from the Configure menu or In-Game Menu

  • Improved: OS visual polish

  • Improved: VRU (USA) and VRS (Japan) support are now differentiated in the Library

  • Improved: 3DOS update files are moved to ‘/System/Archived’ on the SD card after updating

  • Improved: ‘Hardware’ and ‘Advanced’ menu options can now be reset to default in the In-Game Menu

  • Fix: Joystick and D-pad sensitivity issues with some menu toggles

  • Fix: Issue with the alphabetical index when Masters ‘98: Harukanaru Augusta is added to the Library

  • Fix: Changing ODM settings in Gallery sometimes affected in-game ODM settings

Note: The last stage of this OS update may take longer than normal, and the system may reboot during the process.

  1. Overclock changes may take a few seconds to apply when adjusted in-game

  2. For more information about Library customization visit the Platform docs

  3. We recommend resetting your Library Hardware configurations for the best plug-and-play experience

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