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HELP & DOCUMENTATION

Support Hub

Setup instructions, supported ROM file types, common troubleshooting steps, and direct contact options.

🌐 ROM & BIOS Sources πŸ’Ώ PS1 BIOS Guide πŸ“₯ How to Import ROMs πŸ“‹ Supported Formats πŸ› οΈ Troubleshooting

Recommended ROM & BIOS Download Sources

Looking for compatible game files or required console BIOS dumps? Below is a curated list of trusted, community-standard resources to download games and firmware directly from Safari on your iPhone or iPad.

RomsGames

romsgames.net
Top Pick

Massive, reliable library of retro ROMs and disc images. Offers fast, direct downloads that work seamlessly with mobile Safari for PS1, GBA, SNES, Genesis, and more.

PS1 GBA SNES NES Genesis
Visit RomsGames.net β†—

PS1 Emulator BIOS

ps1emulator.com/bios
Required for PS1

Dedicated and verified repository for authentic PlayStation 1 BIOS firmware files (scph5501.bin, scph5500.bin, scph5502.bin). Essential for playing PS1 titles.

PS1 BIOS scph5501.bin (512 KB) scph5500.bin
Download PS1 BIOS β†—

CDRomance

cdromance.org
Disc Classics

The ultimate resource for CD and optical disc-based systems. Features clean PS1 disc dumps, pre-converted PBP files, fan translations, and retro homebrew titles.

PS1 (CHD / PBP) English Patches ISOs
Browse CDRomance β†—

EmulatorGames

emulatorgames.net
All Systems

Extensive retro gaming portal with quick, clean downloads. Great collection of classic Game Boy, Game Boy Color, Game Boy Advance, NES, and SNES games.

GBA GBC SNES NES
Browse EmulatorGames β†—

Vimm's Lair

vimm.net
Pristine Dumps

Famous preservation vault offering 100% verified 1:1 original game dumps without invasive advertisements, installers, or alterations.

The Vault 1:1 Clean Dumps Retro Gems
Visit Vimm's Lair β†—

itch.io Homebrew

itch.io/games/tag-retro
100% Legal & Free

Discover new games built for vintage consoles by independent developers. Thousands of legally free, public domain, and indie creations for Game Boy, GBA, and NES.

Indie Homebrew Game Boy Public Domain
Explore itch.io β†—
βš–οΈ

Legal Ownership & Compliance Notice

RetroNexus is an independent multi-system emulator. Neither the app nor this website hosts, bundles, or distributes copyrighted game ROMs or proprietary firmware. Always ensure you possess the legal rights or physical cartridge/disc backups for any software you import.

PlayStation 1 (PS1) BIOS Setup Guide

Unlike 8-bit and 16-bit cartridge consoles, the PlayStation 1 hardware requires an authentic BIOS firmware to boot discs, manage virtual memory cards, and ensure full game compatibility. Follow this step-by-step guide to set it up in under a minute:

πŸ’‘

BIOS File Requirements for RetroNexus

β€’ Recommended File: scph5501.bin (US / NTSC-U) for widest game compatibility. Alternatively, scph5500.bin (Japan) or scph5502.bin (Europe) are also accepted.
β€’ Exact File Size: Must be precisely 512 KB (524,288 bytes) containing official Sony Computer Entertainment firmware header.
β€’ Format: Raw uncompressed .bin file.

01

Download the BIOS in Safari

On your iPhone or iPad, open Safari and visit ps1emulator.com/bios. Tap to download the scph5501.bin firmware file.

02

Locate in the iOS Files App

Open the built-in iOS Files (Tệp) app and look in your Downloads folder. If the file was downloaded as a .zip archive, simply tap it once in the Files app to unpack and reveal the .bin file.

03

Open RetroNexus Settings

Launch RetroNexus on your iPhone or iPad. Tap the Settings icon (βš™οΈ) located in the bottom navigation tab bar.

04

Tap "Import PS1 BIOS"

Under the Emulation section, find and tap the row with the optical disc icon labeled Import PS1 BIOS.

05

Select Your BIOS File

The iOS file picker will open. Navigate to your Downloads folder and select scph5501.bin.

06

Success & Verification

RetroNexus will instantly verify the 512 KB dump and display: "PS1 BIOS imported. Import a CHD, PBP, or ZIP containing one CUE and its BIN tracks in Library." The BIOS is safely saved in the app's internal sandbox. You only need to do this once!

How to Download & Import Game ROMs

Getting your game library onto RetroNexus is quick and effortless. Here is the complete workflow from web download to first level:

01

Download ROM in Safari

Open Safari on your iPhone or iPad and navigate to a ROM site like RomsGames.net. Search for your title and download the file. When Safari asks, tap Download to save it to your device.

02

Understand File Formats by Console

β€’ Cartridge Consoles (NES, SNES, GB, GBC, GBA, Genesis): You can import either the direct ROM file (.nes, .gba, .gbc, .sfc, .md) or a single-game .zip archive directly.

β€’ PlayStation 1 (PS1) Formats:
- .chd (Recommended): Highly compressed single disc image with rapid load times.
- .pbp: Single-file PlayStation EBOOT format.
- .zip: Single archive containing the .cue sheet and all associated .bin track files. Note: Do not import bare multi-part .bin files individually without their .cue sheet in a .zip.

03

Import in RetroNexus Library

Launch RetroNexus and navigate to the Library tab. Tap the + button in the navigation bar or the Import Game ROM button. The iOS file picker will appearβ€”browse to your Downloads folder and select your game file.

04

Press Play & Enjoy

RetroNexus will detect the console system automatically, create an entry in your library, and sort it by system. Tap the game thumbnail card to jump right into the game at full 60 FPS!

🎨

Pro Tip: Automatic Box Art & Game Covers

Want beautiful box art in your library? Simply place an image file (.png, .jpg, .jpeg) with the exact same name as your ROM file in the same folder before importing (e.g. CrashBandicoot.chd and CrashBandicoot.png), or pack the cover image directly inside the .zip. RetroNexus will automatically extract and assign it as the cover art!

Supported Consoles & File Formats

RetroNexus includes built-in emulation cores for 8 legendary gaming systems. Here is the full compatibility overview:

System Supported Extensions BIOS Required? Recommended Format
PlayStation (PS1) .chd, .pbp, .zip (CUE+BIN) Yes (scph5501.bin, 512 KB) .chd or .pbp
Game Boy Advance (GBA) .gba, .zip No (Built-in) .gba
Game Boy Color (GBC) .gbc, .zip No (Built-in) .gbc
Game Boy (GB) .gb, .zip No (Built-in) .gb
Super Nintendo (SNES) .sfc, .smc, .zip No (Built-in) .sfc
Nintendo Entertainment System (NES) .nes, .zip No (Built-in) .nes
Sega Genesis / Mega Drive .gen, .md, .smd, .bin, .zip No (Built-in) .md / .gen
CHIP-8 .ch8, .chip8 No (Built-in) .ch8

Troubleshooting & FAQs

  • "Import your PS1 BIOS in Settings β†’ Import PS1 BIOS before playing": This means you haven't imported the PlayStation 1 BIOS yet. Download scph5501.bin from ps1emulator.com/bios and import it via Settings β†’ Import PS1 BIOS.
  • "For PS1, import a CHD, PBP, or ZIP containing the CUE sheet and all BIN tracks": Raw .bin files cannot be loaded by themselves. Either convert your disc to .chd or .pbp, or compress both the .cue file and the .bin tracks together into a single .zip file in Files before importing.
  • Game won't start: Confirm the file extension matches a supported system and is a valid dump rather than an executable or patch (.ips/.bps). For single ZIP archives, ensure it contains only one game ROM file.
  • Audio or graphic glitch: Restart the app or check whether you are running in Low Power Mode. Ensure your device is running iOS 16.0 or later.
  • Save states and fast forward: Tap the in-game floating MENU button at any time during gameplay to open the console menu. From here you can save/load across multiple state slots or toggle turbo fast-forward.

In-App Purchases & Subscriptions

Pricing and plan options are clearly shown inside the app and on the App Store listing. If you previously purchased access on the same Apple ID, tap Restore Purchases in Settings. Subscriptions can be canceled or managed anytime via iOS Settings β†’ Apple ID β†’ Subscriptions.

Need one-on-one assistance?

Support is maintained by Quoc Huynh. When reaching out, please include your device model, iOS version, and a brief summary of the issue.

Email Support Team β†—

Direct email: quoctl96@gmail.com

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Β© 2026 Quoc Huynh. RetroNexus.

Independent software. Game ROM files are not included.