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Original post by: Les Bastides ,

Text:

Just updated from 4.1 to 5.1. Had already disabled sip.

Copied expanded MacPro2009-2010FirmwareTool.zip from http://forum.netkas.org/index.php?action=dlattach;topic=852.0 to desktop and ran Mac Pro 2009-2010 Firmware Tool.app.

Got error 5570.

Downloaded MacProEFIUpdate.dmg from https://support.apple.com/kb/DL1321?locale=en_GB

to desktop and ran again with success.

Status:

open