Thanks dear for your advice. My car brakes are working perfectly. Changed all fluids of my Prius that's why also thinking of changing the brake oil also as its not advisable to use brake oil more than 3 years as it absorbs moisture.
However I am amazed, there are more than 3000 Prius on road now in Pakistan and Prius forum has reached to 98 pages mark, still nobody cares to change the brake oil ?
According to the document you shared, I am afraid no workshop in Pakistan including Toyota 3S Dealership can bleed the oil from Prius in Pakistan. Sooner or later, everyone will feel the need to change the brake oil as its not a life time usage fluid. Than what will we do ? This will also lead to failure of brake actuators which is the most common problem in 2nd Gen Prius 2004-2009.