if you want a brilliant way of installing jedi into RAD 11 - try this link I failed totally with all the methods suggested then found this https://www.idefixpack.de/blog/bugfix-units/jedi-binary-installer/ Just run it and see!

I just wish there was one for RAD 12 having spent 3 solid days failing to install the JVCL components into RAD 12 - Getit does not work - have tried it on 3 separate computers.