This modification of DeviceHook makes it possible to use DH 0.50 and DH 0.44 simultaneously on the same stick by just using different folders. Thus it was a simple modification, but yet powerful.
Download: DevHook 0.50 & 0.44 Parallel Mod
Caution: This application was supposed to run on 1.5 kernel and certain early Custom Firmwares for PSP FAT. It is obviously deprecated.