How to install optifine and sphax purebdcraft texture pack, This video is for installing sphax onto ftb ultimate. for unleashed, use these instructions - http://youtu.be/axv65ersbn8 sphax texture pack - http.[128x/64x] feed the beast: yogcraft | bdcraft, Have you ever wanted to use an awesome texturepack for the yogcraft modpack? but never found a patch that was for just that? well now your search is over!. [64x] tekkit [mc1.5.x] - bdcraft | featuring purebdcraft, Info. the texture pack add-on can be used with the current tekkit pack that utilizes minecraft 1.5.1. how to install: install optifine into the tekkit modpack.jar:.