Updating firmware on macbookpro
Well, and after a long weekend searching and trying different solutions (even bless), a friend of mine who knows a lot about Apple stuff mentioned the undocumented Hey there, I just wanted to let you know that I was able to recover thanks to your post from the same issue that you described.
There is a bug report (https://bugs.launchpad.net/ubuntu/ bug/774089) going with a number of people having the same issue and most of them were able to recover, mostly thanks to this post!
Most firmware updates are automatically installed when you update or upgrade OS X.The company does, however, mention that "after the firmware is successfully applied to your Mac, your Boot ROM Version will be: MBP21.00A5. B07." Users can then confirm the version of the Boot ROM installed on their computers using System Profiler.To complete the firmware update process, Apple asks users to follow the instructions in the updater application (/Applications/Utilities/Mac Book Pro EFI Firmware Update.app), adding that the updater will launch automatically when the Installer closes.As you can see, read rates stay right around the same speed and variance, but take a look at how much less varied the write rates have become after the update.You’ll also notice that while the variance has narrowed, it has narrowed toward the faster range.
I’m not responsible for anything that may happen if you continue reading and apply the next paragraph. I knew there were macbook specifc live cds (with grub-efi) out there from the alpha releases but I couldn’t find them on the beta download page.