each console has a minimum firmware that it will downgrade too so if it came with 3.66 out of the box it wont downgrade any lower. the only thing i can suggest is upload your nor backups to mediafire or depositfiles or something and i will take a look and see if the backup had no errors. if it checks out it should be possible to restore it
i took a back up of my ps3 bios, i got 4 different files namely bkpps30.bin, bkpps31.bin, bkpps32.bin and E3flasher.log
all three *.bin files were identical, so reading bios should be OK. I don't have E3 flasher and I am not familiar with their tools. However when you open the bin-file with a hex editor you can find at 0x400:
because you have a 3000x series 3.66 out of the box with new metldr.2 there is no hope of a downgrade but it should be possible to revive the console if you have a good nor dump also the e3 flasher is now worthless because as far as i know they can only be used on one console and because you made a backup it will be paired with your device..
anyway try this: rename one of your backups to bkpps3.bin then place it on the microSD card put all the switches down on the flasher and hold start and turn on the console it should begin flashing and when completed reboot (hope this helps)
That was a very nice suggestion, but unfortunately it didn't help, i tried holding start button, all the switches down (ps3 mode), an when i starts the ps3 it directly shuts down... and when i tried the first switch up and the rest down (fun flash mode) then ps3 remains on but nothing on the screen and if i press start on e3 flasher, after a minute 3 blue leds starts blinking (which is not normal)...
You can use it on other ps3s, your sol it you use dual boot. Ok on to the next, which country are you in? If you are in the states I could take a look at it. When you soldered in the wire to reflash it, did you set the switches for flash fun?
If not resolder the wire and try to set the switches and see what you cAn do. If not and you live in the states I could solder the progskeet and reflash and see if I can get it. Thanks and let me know.