Hyperspin 151 Upgrade Files Only Install Verified May 2026

To perform a "files only" upgrade to HyperSpin 1.5.1, follow these steps to update your existing installation without overwriting your current media, databases, or emulator configurations. Upgrade Instructions

Windows 10/11 Fix: If you are using Windows 10 or 11, ensure you include the sxs.dll file in your root HyperSpin folder to prevent startup crashes. Important Configuration Changes hyperspin 151 upgrade files only install

If you already have a working HyperSpin installation, you do need a fresh install. To perform a "files only" upgrade to HyperSpin 1

Why might only upgrade files install?

• Incremental update design — HyperSpin 1.5.1’s upgrade package is intentionally built to overwrite only changed files (e.g., HyperSpin.exe, core DLLs, or module scripts) while preserving user data like settings, databases, and media.
• Missing full base version — If you try to apply the upgrade without a previous full install (e.g., 1.4 or 1.5), it will appear incomplete or broken.
• Selective installation script — Some community releases split “upgrade only” packs to save bandwidth, requiring users to manually copy files over an existing setup.

• Delete the new Plugins\HyperSpin.plugin file.
• Restore your old RocketLauncher.dll from backup.
• Download the latest RocketLauncherUI and update your Global HyperSpin Init.ahk to point to the new 1.5.1 exe.

• Open Settings.ini (in the Settings folder) with Notepad.
• Verify that HyperSpin_Path points to your correct drive letter.

The Verdict: Is the Upgrade Worth the Command Line?

For the purist who builds cabinets with 4K displays or 64-bit Windows 11 environments: Yes. Incremental update design — HyperSpin 1

Important notes:

• The upgrade assumes you already have HyperSpin 1.5.0 Base installed
• It is not a full post (complete set of media/databases) — just the executable and core files
• If you’re on 1.4, you need the 1.5.0 base first, then apply the 1.5.1 upgrade