If you are following this release, the expected flow is:
The "part1" suffix indicates that the update is split into several archives (usually 4 for this specific RUNE release) that must all be downloaded and extracted together to install the patch. forzahorizon5updatev1671650runepart1
Have you found any other secrets in the "Rune" files? Share your datamining results in the comments below. If you are following this release, the expected
The headline feature of this version was the addition of three high-performance Italian vehicles. This is the most likely destination for the "Part 1" aspect of your query, as it was a distinct DLC drop. The headline feature of this version was the
A placeholder for a vehicle simply called CAR_RUNE_GHOST was discovered. It had the engine sound of a 2.6L 4-Rotor but the chassis weight of a Lotus Evija. This car was never fully released, suggesting "Rune Part 1" was a test bed for an unreleased electric hypercar.