We've moved from TweaksMobile to here (NBF) and as such, the old site is now down, unfortunately. Because of that, the driver downloads are unavailable until we get them up here. Please be patient with us while we get the move finalized, and I do apologize for the inconvenience.
As far as 156.55, that project has been scratched in favor of 156.57. Its a true mobile driver just like 156.55 was, but seems to be more stable, so that's what we're going with for the time being. I unfortunately can't guarantee a release timeframe for them, as we still have alot of work to do with getting the move complete from TweaksMobile to NotebookForums. Again, I wish I could do better on this, and I do apologize for the inconvenience.