The Back In Time Equipped Glitch (BiTE) is a trick that allows you to warp to the first King Bulblin Fight like the Back in Time Glitch, but allows you to use the items obtained from another save file.
It's important to note that the success of the Back in Time Equipped Glitch depends on the the map and the objects that load when the save file is RESTORED. This is because the game is trying to load two different maps at the same time.
After getting the iron boots, save in Mayor Bo's House. Go to the Ordon Ranch, and immediately after Link stops moving, turn around and use a Long Jump to get over the loading zone. From here, roll about 3 times and do BiTE. This will automatically warp you to the King Bulblin battle. Obviously this faster spot for BiTE can't be done on the Wii Version, so instead, BiTE would be done from the bridge to the Faron Woods for the Wii.
After getting the Master Sword, save in the Purple Mist Area. Load the savefile you created on Hyrule Castle Rooftops and do BiTE. Load the 2nd File (Ordon Village). This will automatically warp you to the King Bulblin battle. After voiding out in the King Bublin Fight and resetting, just load your BiT-savefile to get Early Monkeys and Early Boss Fights.