![]() ![]() Secondly, the firmware upgrade performed in these steps are specifically for a 2009 Mac Pro. If you Mac Pro was installed to boot into 32-bit mode for 32-bit drivers for some hardware then this will make that hardware unusable as it defaults into 64-bit mode. If you absolutely cannot have a non-working Mac Pro, then do not perform this upgrade. Note that upgrading your firmware could result in a dead system if performed incorrectly. Do you have an older model 2009 Mac Pro (pre-Trash Can Mac Pro) that could use a makeover? Updating your firmware could give you added benefits such as the ability to install faster processors, faster memory, and newer macOS versions. ![]()
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