Version 1.2.5

Download [21.8MB]

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

Release Notes

Version Number

1.2.5

Date

[2026-04-10]

MD5

5eaee5e0988dbc9dd69646d6e1829f34

General

  • New: Advanced HDR

    • Designed for modern OLED displays*

    • Original Display Modes now take full advantage of modern HDR brightness and color gamut

    • Max luminance is adjustable to accurately match consumer CRTs, broadcast monitors, and beyond

    • For the most accurate picture: Before adjusting the max luminance setting, set your display HDR tone mapping to disabled or HGiG and check that game mode is enabled

Core

  • New: Support for Advanced HDR

OS

  • New: ‘Max. Luminance’ display setting

    • Navigate to Settings → Display→ ‘Max. Luminance’. This can be adjusted only when HDR is enabled

  • New: Alphabetical navigation in Library

    • Press Up in the Library to display the alphabetical index and select a letter by moving Left and Right. Press Down to return to the Library. Jump to the inserted cartridge by pressing B

  • Improved: Library scrolling, responsiveness, and speed

  • Improved: Automatic virtual Rumble Pak selection for several games

  • Improved: OS visual polish

  • Fix: Library organization issues in rare instances

  • Fix: Library updating issue when a blank SD card is inserted in rare instances

  • Fix: ALLM and HDR settings sometimes apply incorrectly with 1080p displays

Controllers

  • Improved: Pair controllers in-game without opening the menu

  • Fix: Controller LED remains on in rare instances

Note: Recreating a CRT beam demands high peak localized brightness (the display must get much brighter in specific, small spots). Modern OLED displays, which excel at this, are recommended with Advanced HDR.

back to Support