I've uploaded a DMS of my Power XL Install Disk to the Zone. When you run the patch it says it's version 1.4 - hope this helps you?
There is some other stuff on the disk too, maybe some docs perhaps? The only useful bit for me is C:\highdensitypatch
It's used to patch something in the OS as the Amiga has trouble writing to the HD disks... it can read them fine without the patch though (I think)