Powers on, no chime, no video, need an EFI dump

Bought this mac mini from ebay, it had an EFI password (4-digit one).

Tried to modify the BIOS\EFI chip using a CH341A, but it didn’t go well. Killed the chip, and now I’m using a W25Q64FW instead of the original MX25L6406E.
The question is: is W25Q64FW gonna work (it’s also a 64mb 1.8v chip) and where can i get an EFI dump for 820-3227-B board with and i5-3210M?

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