resolvepatch

Binary patcher for DaVinci Resolve and Fusion Studio that bypasses the activation chooser and enables Studio features. Pure Python, no external dependencies.

Supported versions

Verified on:

• DaVinci Resolve 20.3.2.9
• DaVinci Resolve 21.0.0.28
• Fusion Studio 20.3.2
• Fusion Studio 21.0.0.25

Other 20.x and 21.x dot-releases may work — the script will say patch[0]: no match instead of corrupting anything if the byte offsets have shifted. Anything older than 20 or newer than 21 is explicitly rejected.

Requirements

• Windows
• Administrator privileges
• Python 3.10+ (standard library only)

Usage

Open PowerShell as Administrator:

python resolvepatch.py                       # interactive menu (auto-detects installed targets)
python resolvepatch.py --restore             # restore from .bak
python resolvepatch.py --targets resolve     # only Resolve.exe
python resolvepatch.py --targets fusion      # only Fusion's fusionsystem.dll(s)
python resolvepatch.py --targets all         # both, non-interactively
python resolvepatch.py --path X              # specify a custom Resolve.exe path

After patching, launch Resolve or Fusion Studio normally. The activation chooser will not appear and you'll drop straight into Studio mode.

What it does

• Patches Resolve.exe in place (atomic write with retry; backs up to Resolve.exe.bak first).
• Forces the early-exit success path in the license-check chain function — converts a single conditional jump into an unconditional one, so the function returns "license OK" before reaching the dialog-construction code.
• Flips a few branches in the inner Dolby Vision license validator.
• Writes a fake RLM license file next to Resolve.exe and sets HKLM\...\Environment\RLM_LICENSE=blackmagic.lic (broadcasts WM_SETTINGCHANGE so already-running processes pick it up).

Disclaimer

For research and personal use on binaries you own. If you get value out of DaVinci Resolve Studio, buy the license — it's reasonably priced for what it is.

Demo

davinci+fusion.mp4