Posted by Dark Alex:
"I haven't been able to reproduce the problem in my 8GB card, but anyways I think the reason is literally that the memory stick was not ready in the time plugins are loading, although the memory stick modules are loaded, but they require some time to initialize as they are executing code in other thread.
The code in 3.80-3.90 of plugins loading is same, it was probably the change of sony ms driver what altered timings, etc. Try this prx (systemctrl.prx for the phat, systemctrl_02g.prx for the slim), replacing the one of the flash0 kd folder, and tell me if it works after this."
Right after the announcement, Dark-AleX decided to released a new version of the patch that check for the insertion of the memory stick before waiting for the file system to be mounted. This specific version is what you can download below.
Note that that you are manually dealing with the flash0 of your PlayStation Portable so be sure that you know exactly what you are doing. Dark-AleX mentioned that he will be making a formal release once all the problems have been sorted out.
Does this finally mean that 8gb sticks will work perfectly on custom firmware now!
Download Link and Source Here: http://www.consolespot.net/forums/showthread.php?t=4300