Land Rover Repair: brakes get stuck, power steering fluid, master cylinder

Question
My kid put some power steering fluid in the master cylinder. I drove it for some time. I change the master cylinder, and car got stuck by calipers. put new calipers and still gets stucks,now i changed the ABS unit, and still the problem persist. what else do I need to change?

thank you

Answer
If you filled the brake reservoir with power steering oil you will end up having to replace every rubber component in the system.  That includes the pump, modulator, master cylinder and all valves under the hood.  The calipers can probably be rebuilt, and the lines cleaned.  You're looking at a big job.