---
title: Install firmware — PS5UPDATE.PUP | Meridian
description: Install official PS5 system software in Meridian: fetch PS5UPDATE.PUP from Sony's system-software page, then File → Install Firmware.
canonical: https://ps5emulatorwindows.com/protocol/install-firmware
updated: 2026-10-13
---

# Install firmware

Fetch Sony's official PUP, then File → Install Firmware. No firmware ships with Meridian.

## Facts (2026-10-13)

- **File:** PS5UPDATE.PUP from Sony's system-software page
- **Menu path:** File → Install Firmware
- **Ships with:** No firmware ships with Meridian
- **Check:** Firmware version appears in About

## Procedure

Precondition: Meridian installed per [Windows installer](/protocol/windows-installer).

1. Open Sony's official system-software page in a browser and download PS5UPDATE.PUP for PlayStation 5. Keep the file exactly as downloaded — do not rename or unpack it.

2. In Meridian, choose File then Install Firmware and select the PUP. Wait for the progress bar to complete; interrupting it corrupts the install.

3. Open About and confirm the firmware version string is listed. That string is required in every bug report.

## Rules and failures

- Official file only. Custom or patched PUPs are rejected; background is in [System software PUP](/lexicon/system-software-pup).

- If Install Firmware reports a hash error, re-download — the file was truncated by the browser or a proxy.

- If the menu item is disabled, the launcher needs the runtime from [Missing runtime](/protocol/missing-runtime) first.

Own your library: firmware enables your owned dumps to boot. It does not add games — 400+ titles are recognized once indexed per [Index your library](/protocol/index-your-library).

## After firmware

Continue to [Boot system software](/protocol/boot-system-software) to confirm the system menu reaches idle. Fresh to Meridian? Start from [Download Meridian](/download) and work the Protocol in order.

## FAQ

### Where do I get PS5UPDATE.PUP?

From Sony's official system-software page. Meridian never bundles firmware; fetch it yourself and install via File then Install Firmware.

### Can I reuse a PUP from another emulator?

Only if it is the unmodified official file. Renamed or patched copies fail verification — re-download from Sony.

### How do I confirm the install worked?

About must list a firmware version. No version, no boot — repeat the procedure.

## Related

- [Protocol](https://ps5emulatorwindows.com/protocol)
- [System software PUP](https://ps5emulatorwindows.com/lexicon/system-software-pup)
- [Boot system software](https://ps5emulatorwindows.com/protocol/boot-system-software)
- [Windows installer](https://ps5emulatorwindows.com/protocol/windows-installer)
- [Index your library](https://ps5emulatorwindows.com/protocol/index-your-library)

## Download

Free Windows app: [Download Meridian](https://ps5emulatorwindows.com/download)

Markdown mirror: https://ps5emulatorwindows.com/protocol/install-firmware.md