If you already have FM7 installed and are looking for "solid content" in the form of patches, you can find them from various community sources: Downloads - Native Instruments
Note: If you owned the FM7 legally in the past, you should log into your Native Instruments account. Under "My Products & Serials," you may find an upgrade path to FM8 for as little as $49. Native Instruments Fm7 Download
If you want the FM7 sound legally and safely, stop searching for the old download and buy . Here is why: If you already have FM7 installed and are
Dexed is the community standard. It is a 6-operator FM synth that is specifically designed to be compatible with DX7 patches (and thus, FM7 patches). It has a slightly uglier interface, but it sounds immaculate. You can find thousands of FM7-style presets for Dexed online. Here is why: Dexed is the community standard
Even if successful, you may experience GUI glitches on high-DPI monitors (4K screens) and crashes when changing presets quickly. This is for nostalgia only, not professional stability.
Since FM7 is difficult to acquire and run today, most users opt for these modern equivalents: Downloads - Native Instruments