Flash it to do what? What are you trying to gain by monkeying with the EFI? Sounds like a bricked computer waiting to happen....I did not take it appart yet (waiting for the tools), but does anyone know where on the MB is the EFI Atmel chip located ?
And does anyone have any guides on how to flash the EFI with BusPirate or Blackcat USB ?
my monkeying around on the forums just got me thinking of something else:
- if i can recover the drive info to the way it was before the format maybe i can get the 4 pin password back
- i bought the Teensy and used Overtek's code twice x 2 days and no luck so i think it is not a 4 pin EFI password ( the person told me they formated the drive in another computer than got the lock screen after and can't do anything )
- but now I need to look for gawd damn tool to take apart this little bastard
awesome ... is there anything i can not do with the BlackCat that I can not do with the BusPirate ?
I got the FlashcatUSB, connected the way you said ... the software does find a SPI device but tells me it is not supported and in the console i do not get the JEDEC number only 000000I would recommend first looking to see what efi chip it is.
If it is a simple SOIC8 package, the clip will work and if you want a GUI interface then use the blackcat. If you are comfortable with command lines, then the bus pirate, I would recommend v3.6 - as it is cheaper in cost over the v4
All you need to do is dump the 8mb rom, be sure to save a spare copy, open it in a hex editor and look for the lines that contain $SVS, there should be two areas within the rom, all you really need to do is FF out that line down to the next block of FF.
Only the first $SVS entry needs to be removed, yet both can be as well.
Be sure you pull the data sheet for the efi chip so you know the pin out.
It may be something like this
Make sure that:
pins 3, 7 & 8 are all connected to 3.3v
pin 4 to ground
pin 1 to CS
pin 6 to CLK
pin 2 to MISO
pin 5 to MOSI