Trying to get out of brick using psp jig

Im getting the 5 beeps of death when going back from CEX to DEX. Im using the psp jig but its only getting me so far.

Using my psp i can get this far:

On the PS3
2. Switch off ps3 from power cord
3. Put the USB Dongle with service mode payload in the right usb port
4. Put power cord in the console
5. Press power button followed quickly with eject button, the console should boot, and then reboot. (if the beeps continue it's normal)
6. Remove service dongle
7. Put the USB Pen with the 2 files inside in the right usb port
8. Power on the PS3. If all went well you shall see the ps3 reading stuff in the usb pen, and the hard drive of ps3 working, wait for the console to power off

On step 8 im still getting the 5 beeps even though the jig has worked. What am i doing wrong? Ive put the files onto a usb stick but the ps3 doesnt seem to be reading it. Its annoying me now

from what i have read in the past, the psp jig has a very low compatibility rate with ps3's. your gonna need a legit way to enter fsm. get yourself a psgrade device

That sounds more viable. Ive got 2 dongles at home but dont know where they are so have had to order another. So annoying, shouldnt be messing with things i dont understand proper