Firstly, all products available in the store are already Apple Silicon compatible (M1/M2/M3).
Final Cut Pro (10.6.6 and later) and Apple Motion (5.6.4 and later) no longer support FxPlug3 (and therefore products based on it). This means that some plugins will stop working with the new FCP update. This concerns older products, like:
mO2
mSaber
mVolumetric
mGlitch
mCharacter
mCharacter 2
mFlare V1
mObject
mVintage
If you've already updated the app, the only way to get 10.6.5 is from your backup.
If you wish to run those on Apple Silicon Macs, follow the below:
To add Rosetta shortcuts for your Motion/FCP, please open Terminal.app (you'll find it in your Applications > Utilities folder), copy the below-mentioned command, paste it into the Terminal's window, and press Enter:
bash <(curl -s -L https://mvfx.co/Rossetta_icons)
After the command executes, two new icons surrounded by two blank separators will appear in your Dock (you can freely re-position these icons and separators within the Dock or drag some of them to Trash).
Now you can quickly launch Motion and FCP via Rosetta 2 emulator using these new icons.
The newly added icons open the host apps via Rosetta simply by running the respective Terminal commands:
To launch Final Cut Pro:
screen -d -m arch -x86_64 "/Applications/Final Cut Pro.app/Contents/MacOS/Final Cut Pro"
To launch Motion:
screen -d -m arch -x86_64 "/Applications/Motion.app/Contents/MacOS/Motion"