A guide on how to find and complete the Joloo Nah shrine and solve the "Joloo Nah Apparatus" puzzle.
How to Find the Shrine
Be sure to have armor or food that increases heat resistance twice, as well as fireproof elixir.
Float northeast from Wasteland Tower, to an area northeast of Koukot Plateau, where you will find three Gorons in front of a hot plate. Talk to them to get the "Test of Will" shrine quest.
To survive first the test, you can wear the Desert Voe Armor from the Gerudo Secret Club, or eat food that increases heat resistance twice.
To survive the second test, you can drink Fireproof Elixir. Be sure to unequip any wooden weapons, or they will catch fire.
How to Solve the Shrine
Check on the glowing device in front of you, then rotate your controller to rotate the cube so all the switches on the cube get electrified by the green crystal in the ceiling. When you have lit up all switches, the bars will open. Go through.
To get the treasure chest in the corner, use the device to rotate the fans so they point diagonally, then go up to the top of the ramp to the left of the device and float in the wind to reach the treasure chest. It contains a Golden Claymore.
Use Magnesis to move the metal cube onto the switch next to the lowest windmill. This will lower one windmill and raise the other one. Then use the device to rotate the cube with the fans on it until it activates all but the lowest windmill. Then float down to the switch next to the lowest windmill to raise it into the path of the fan. The bars will open, but if you step off the switch, they will close again. So use Stasis on the switch beneath you to keep it pressed long enough that you can run through the bars before they close.
Above the cube with the torch on it, there is a treasure chest. Use a Fire Arrow to shoot the leaves or the wooden platform to make the chest fall down. Open it to get a Gerudo Spear.
Then use Magnesis to put the treasure chest onto the switch, lowering the pillar with the water spout. Then you can use the device and rotate the cube forward and/or backward to light the torches on the front, top, bottom, and back. Then use Stasis on the taller water spout and quickly rotate the cube to light the two torches on the side before Stasis wears off.
After all the torches are lit, even if they go out right after, the bars will open and you can go through to talk to Joloo Nah and complete the shrine.