Contribution d'origine par : Kylie Hignett ,
Location of the EFI chip on a Mac Pro 2,1 Logic board
I have ''++MacPro2,1++ - ++A1186++ - ++2138++'' that showed up on my workbench.. yay. It powers on but no screen and no chime.. boo.. I have scoured the interwebs and settled on a solution to re flash the efi chip. My reasoning being the efi led does not light up at all when pressing the diag button after a minute or two or twenty… there are no other error leds presenting themselves. My guess.. I would say the previous tech or diy’er failed in their attempt to update/hack the efi to get a newer OS on it. My plan is to use one of these: '''SPI USB To TTL 24/25 Series USB Programmer EEPROM BIOS Writer CH341A SOIC8 Clip''' from ebay to restore the original firmware. here is an image of the logic board: https://cdn.shopify.com/s/files/1/0404/6905/products/1752_-_1_2000x.jpg?v=1556169858 Can anyone help in identifying which chip is the efi ? im having real issues with just me and my magnifying glass… Any help is greatly appreciated.
Mac Pro First Generation