The first time I tried it, I only got Edge, and had many problems.
reverted to stock and rooted and reloaded my nandroid backup and tried again....
Wow! there is a DEFINITE DIFFERENCE !!! I am now getting LTE with more bars, and also I see 4G where I hardly ever saw it in my house! Now, after the flash, I almost NEVER see EDGE anymore. I think this is a superb improvement to the GS4...
just for anyone's knowing...
I am on 4.2.2 and had upgraded the baseband to UVAMDL and it still shows that in "About phone" but the results are better than anything I have attempted before... I even got a Signal Booster from TMO lol... Now I don't need it!
Great find and fix guys!
Aloha !