heres how me and my friends do it, other may have devices or diff techniques but i been usin this for years and works all the time.

u need atleast 2 ppl, one inside, one outside. i took a two liter soda bottle, cut a small hole up top and fit a rubber line thru it, fill it with a bit of brake fluid, and submerge the tube. the other end will be attach to the bleeder valve air tight, so find a tube accordinly to size. start from the right rear, then left rear, right passenger, then left driver. make sure the mc is full at all times, dont let it drain or u will draw air in.

now, have that person sittin inside to start pumpin the brakes 20 times fast and hard, then on the 21st pump, have him/her hold it, u havin that tube attach and the other end inside the soda bottle submerge, open the bleeder valve and u should c air bubbles. i do this bout 4 times a corner then move on for bout 5 rotations. its a long and tedious process but gets the job done. good luck.