MacBook Pro EFI Firmware Update 1.5.1 - MacRumors
Skip to Content

MacBook Pro EFI Firmware Update 1.5.1

by

Apple has released MacBook Pro EFI Firmware Update 1.5.1.

This update fixes several issues to improve the stability of MacBook Pro computers.

After the firmware is successfully applied to your Mac, your Boot ROM Version will be:

MBP21.00A5.B08 or MBP31.0070.B07

You can confirm the version of the Boot ROM installed on your computer using System Profiler.

To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/MacBook Pro EFI Firmware Update.app). The updater will launch automatically when the Installer closes.

Related Roundup: MacBook Pro

Popular Stories

Apple Event Logo

Apple's Next Era Begins September 1

Thursday May 7, 2026 10:36 am PDT by
Apple recently announced that Tim Cook will be stepping down as CEO later this year, after 15 years of leading the company. Effective September 1, Apple's hardware engineering chief John Ternus will become the company's next CEO, while Cook will become executive chairman of Apple's board of directors. In his new role, Apple said Cook will assist with "certain aspects" of the company,...
Read Full Article
Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro Launching in September With These 10 New Features

Saturday May 9, 2026 6:03 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not launching until September, there are already plenty of rumors about the devices. It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component will be moved under the...
Read Full Article
General Apps Reddit Feature

Reddit Starts Blocking Mobile Website, Pushing Users to App Instead

Monday May 11, 2026 6:10 am PDT by
Social network Reddit recently began blocking mobile visitors to its website while pushing them to download the official Reddit app, and it's fair to say that the move is not going down well with users. If you visit reddit.com on your iPhone today, you may see a new popup that can't be dismissed, asking you to "get the app to keep using Reddit." A Reddit spokesperson told Ars Technica...
Read Full Article • 112 comments