EmuFive and PS4 Multiboot 1.3.0 bring Linux with 3D graphics and a PS5 emulator to the jailbroken PS4

Linux on a jailbroken PS4

PS4 Multiboot, by blue0x1, is a controller-driven menu for installing and booting Linux on a PS4 with GoldHEN. You copy the rootfs archive of any x86_64 distribution over FTP and the installer adds the PS4 kernel modules and firmware, the HDMI fix and the display settings. Each distribution lives in its own file, on the internal drive or on a USB, with no repartitioning, and takes about 28 GB. The repository started on November 6 and version 1.2.0 came out the same day, with Mesa 26.2.5 patched for the console's GPU, which gives OpenGL 4.5, Vulkan 1.3 and an accelerated desktop.

Version 1.3.0, from November 12, makes later PS4 Slim and Pro models with the Baikal southbridge, which showed only a black screen, boot Linux and show an image, though experimentally and with USB writing still failing on some. It also brings USB-installed distributions back to the menu. It's tested on a PS4 Pro with the Belize southbridge, and the original PS4 hasn't been tried.

A PS5 emulator on top

EmuFive, by the same author, installs through PS4 Multiboot like any other system and boots straight into an emulator, with no desktop. It uses KytyPS5, which doesn't emulate the PS5's CPU: it runs the games' x86-64 code as is. Since PS5 games use AVX2, FMA and BMI2 instructions that the PS4's Jaguar CPU lacks, a patch rewrites them when each module loads into instructions it does support, and PS4 Mesa provides the Vulkan 1.3 the emulator asks for.

The README itself calls it experimental research. On a PS4 Pro, God of War Sons of Sparta runs at about 40 fps or more and Hollow Knight: Silksong works since 1.0.1, but other games are still being tested and many run slowly, because the Jaguar is far slower than a PS5's CPU. It has a home screen with tiles labeled by origin (USB, PS4 or PC), profiles, trophies, screenshots and, since 1.0.2, a web browser driven with the controller.

Version 1.0.4, from November 12, fixes the update from Settings not starting and games not being found on a second USB. Anyone coming from 1.0.3 or earlier has to start that update once by hand over SSH, according to the notes.

Requirements

A PS4 with GoldHEN, for its FTP server and payload loader, a PC on the same network with an FTP client, about 28 GB free or a USB drive of at least 8 GB, and a DualShock 4. After launching the payload, the TV may sit on "no signal" for a minute or two while Linux starts. The user supplies the games: folders with eboot.bin or .zar dumps.