SIGNALSOUT Posted March 17, 2019 Share Posted March 17, 2019 Hello, I downloaded the Mac Pro 2006 - 2007 Firmware Tool and am getting an error code 5355 or something of the sort. So I manually downloaded: MacProFirmwareUpdate1.2.dmg and moved the files to the Utilities Dir. If I open the Firmware Tool it creates the RamDisk I need but fails. So I open the ExtractAndPatchEFIFiles.sh after modifying it a little to point at the right files I have to manually apply the patches via terminal After that I run UpgradeEFI2006-2007.sh and it looks good no errors. So I hold down the power button, It boots to EfiUpdate screen for a second. Then boots to OS and doesn't update. I have Mac Pro 1,1 Boot Rom Version: MP11,005C,B08 SMC Version 1.15f3 Any assistance would be great. Thank you, Nate Link to comment Share on other sites More sharing options...
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