Post by: Xairbusdriver on September 20, 2012, 10:36:45 AM
,firmware updates can break the whole computer!1. Always make sure you have a bootable backup before performing a firmware update
2. Wait a few days/weeks before making the update, let any problems appear and get fixed
3. Make sure a laptop is NOT running solely on its battery, use the AC adaptor
4. Carefully read and follow any and all on-screen instruction
All the updates below state you need 10.7.4 or 10.8 or better.
MacBook Air EFI Firmware Update 2.5: <http://support.apple.com/kb/DL1592>
MacBook Pro EFI Firmware Update 2.9: <http://support.apple.com/kb/DL1593>
MacBook Pro Retina EFI Update v1.0: <http://support.apple.com/kb/DL1591>