believe it or not im in a similar position, recently i decided to update my ps3, to 4.46 dex and it was fine, then i decided to install the spoof without researching it as i thought "its a spoof, what could go wrong really" and boom i bricked due to it over writing a file on the hdd that spoofs the pass phrase, you are suppose to remove the original spoof before installing a new one.

anyway, ive tried many thing like removing my hdd and using another one to see if it resolved the problem, as the file that caused the brick wouldnt be accessible by the system. anyway that didnt work and the only thing ive found is use a dongle and put a certain payload on the dongle, put it into fsm and use a firmware that doesnt check for the syscon etc etc.

i have been doing a little research and not many people are in our situation, most people have red screen of death, but mine has completely bricked not allowing anything to be run on the ps3

ile notify you if i manage to fix my ps3, i have a few more methods left.

also all my attempts to install specific firmwares have failed, firmwares such as:
- 3.55 ofw
- 3.55 dex
- 3.55 cex downgrader
- rebug 4.46.1
- rebug 3.55 downgrader
- 3.41 ofw

all of which either give corrupt data or say its not applicable, i think the brick has removed the de hash checks done by qa, im not 100% though.