first off, im running a 60g ps3 (now 250) with 3.41 firmware, using hermes psgroove on my maximus avr usb 1.0
i read in the compatibility list that HEAVY RAIN is compatible if played from the internal and external drive. and the note says: Uninstall all pre-PSJailbreak content from HDD (im not sure i get this..)
i wanted to use the move controller, so when i popped the game in, it ask me for the 2.0 update (the move compatibility update) everything installs ok.
my problem now is that i runs with the disc in. from the internal drive, it freeze automatically when i click on the disk icon. and from the external drive, when i click the disc icon an error message ask me to insert the heavy rain disc...
Try Ftping to your ps3 and replace the eboot.bin from the directory dev_hdd0/game/whatever the title id is, example BCUS9841(little big planet in this case) /PS3_GAME/USRDIR and, with the one that your back up manager made located on internal or external.
Example for internal hardrive dev_hdd0/game/Laun12345/GAMEZ/BCUS9841/PS3_GAME/USRDIR on external it would be PS3/GAMEZ/BCUS9841/PS3_GAME/USRDIR.