I have been receiving many questions on how to enable wifi tether on the Galaxy S4. Until now FoxFi has worked fine for most on the Galaxy S4, but I have found it to be intermittent as many of you have. Developer "Scrosler" of ScottsRoms has released his tether hack for the Galaxy S4 not only will it enable the stock 4g hotspot with provisioning, there is also a mod to remove the persistant wifi notification. This mod has is designed for stock rooted and stock deodexed I545VRUAMDK based roms, but it may also work on other custom roms. There are four zip files to choose from each adding a particular mod. Choose the mod you would like to flash and install it in custom recovery. You can grab the files you need at the source link below.
via XDA
via XDA