Ports now always use PortMaster's own bash. Cuphead's sound no longer glitches on the built-in speaker. The Binding of Isaac: Rebirth now keeps your progress and Continue between launches. Xtras now shows PortMaster's current "Latest" version.
More details available in https://nxredux.com/reference/release-notes/
Select zip files that is relevant to your platform and extract it to your exFAT formatted SDCARD. Alternatively, you can update directly using the OTA update feature in the device.
If you have any questions, please open an issue in the repository.
Full Changelog: v2.5.0...v2.5.1