I want to install the old version of PX4.Windows.Cygwin.Toolchain.0.8, but it says that the new version has been installed. How do I uninstall the new version?
Did you try Window Add/Remove? If it is an MSI it should be there.
Yes, I have tried it, and the installation is not found in the Windows Control Panel → Uninstall a program. Maybe I missed something, can you tell me his name?
Have you tried uninstalling it using the registry? If not, you should try it once. Hopefully, the registry method will work.