I followed your guide, but then I started following this one http://www.ps3hax.net/showthread.php?t=30815
(I soldered my PS3 to the trigate w/ SBE point, but I'm not sure if it was successful).
This is my first installation to CFW. I am on V4.10 (and my HDD is formatted, so there's no contents of it in my drive).
But I do see the "Plug in controller to USB and press PS button"
And I was able to get it to shut off using my E3 Card Reader w/ the file to FSM the PS3 (I also have a PS3Key, but I just used this instead.)
After it shuts down, I remove the Key and put in my own USB with the Lv2diag.self and PS3PDAT.PUP (Rogero V3.1 CFW) (It's a 64GB formatted to FAT32 which DOES work on the PS3 as I've tested it before when my PS3 was working with OFW installed).
Thing is, while I boot it up with the USB in at this step, my PS3 Stays on and never shuts down (I've waited up to 45 minutes). The green power LED doesn't even blink to indicate it's shutting down.
I don't know why it doesn't work. I'm 100% sure the clip is installed correctly as I was able to backup my flash and install the e3_downgrade.bin file.
What could be the problem? (Also I'm on a Fat PS3 CECHK01 using a Western Digital Scorpio Black 750GB).
I also know for a fact there's no issues with the HDD either as OFW was running earlier today. (I also did a Long format on my Laptop which also checks for bad sectors), there were no problems.