i am on 11.4.0-37U
i used a guide from http://3ds.guide that used soundhax on 11.3, then downgraded with safectrtransfer and backup to 2.3.0 and installed Luma and a9lh then updated to 11.4 and i still have HBC, FBI and Luma. I also have freeshop, Godmode9 and CIAngel. only thing that wont work...