Snes9x 1.57 May 2026

The headline feature?

They’ve also finally squashed the "secret of mana audio desync" bug—a glitch that would slowly throw the music out of sync with the gameplay after an hour of co-op. That nightmare is over. For the romhacking community, this release is Christmas morning. The MSU-1 support (a custom chip that allows for CD-quality audio and full-motion video in SNES games) has been fully re-architected. snes9x 1.57

The 1.57 update optimizes the ARM64 architecture (Apple Silicon and Android) so well that you can run Star Fox —the Super FX chip game that usually tanks performance—at a locked 60fps on an iPhone 15 with 2x resolution scaling. SNES9x 1.57 isn't trying to be flashy. There are no AI upscaling gimmicks or 3D transformations. Instead, it is an exercise in subtle perfection . The headline feature

Most emulators offer a rewind feature (hold a button to go back 10 seconds), but SNES9x 1.57 introduces a battery-backed rewind cache. This means you can close the emulator, turn off your PC, go to work, come back, load up Super Ghouls 'n Ghosts , and still rewind the death that happened yesterday. For the romhacking community, this release is Christmas

It won't look exactly like 1991. It will look better. And it will run smoother than it ever did on original hardware.