Apple Releases macOS Mojave 10.14.5 Supplemental Update for 2018 and 2019 15-Inch MacBook Pro

Apple today quietly released an updated version of macOS Mojave 10.14.5, which is designed for 15-inch MacBook Pro models that feature a T2 security chip, aka the 2018 and 2019 machines.

The new version of the software can be downloaded through the "Software Update" section of System Preferences on all compatible Macs.


According to Apple's release notes, the new software addresses a "firmware issue" impacting Macs with a T2 chip. Apple provided no additional detail, so we don't know what the specific firmware issue might be, but we may get more information when the security notes become available.

The ‌MacBook Pro‌ Supplemental Update addresses a firmware issue affecting 15-inch ‌MacBook Pro‌ computers with T2 Security Chip, and is recommended for all users.

For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222

Apple released the macOS Mojave 10.14.5 update on May 13, adding AirPlay 2 support for sharing music, photos, videos, and more from the Mac to ‌AirPlay‌ 2-enabled smart TVs from companies like Samsung, Vizio, LG, and Sony.

Minor Apple News+ interface changes were included, allowing users to follow a magazine directly from the catalog browsing view, and there were improvements to audio latency on 2018 machines.

Related Roundup: MacBook Pro

Top Rated Comments

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13 months ago
2018 MB Pro owner:

Build went from 18F132 to 18F203
Bootrom version went from 220.260.170.0.0 (iBridge 16.16.5125.0,0) to 220.260.171.0.0 (iBridge 16.16.5200.0.0,0)
T2 firmware went from 16P5125 to 16P5200

La di da
Score: 7 Votes (Like | Disagree)
Avatar
13 months ago
I wonder if this fixes the BridgeOS error issue that has been complained about ad nauseam on this forum?!?!??! Hmm...
Score: 7 Votes (Like | Disagree)
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13 months ago
I wonder if this update removes the bezel
Score: 6 Votes (Like | Disagree)
Avatar
13 months ago

I wonder if this update removes the bezel

Can confirm, it sadly does not :(
Score: 5 Votes (Like | Disagree)
Avatar
13 months ago
So many of us are going to be waiting a month or two to see what other bugs are revealed in the 2019 models. I'm really hoping to get one later this year - wouldn't want to be an early adopter though.
Score: 4 Votes (Like | Disagree)
Avatar
13 months ago

On a tangential note, I wonder when iMacs will get T2 (or whatever version) chip?

When Apple finally decides to remove the spinning HDD from the entry level iMac SKUs. T2 don't work with spinning hard drives.
Score: 4 Votes (Like | Disagree)

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