New in OS X: Get MacRumors Push Notifications on your Mac

Resubscribe Now Close

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
Buyer's Guide: MacBook Pro (Buy Now)


Top Rated Comments

(View all)

4 weeks ago
I wonder if this fixes the BridgeOS error issue that has been complained about ad nauseam on this forum?!?!??! Hmm...
Rating: 7 Votes
4 weeks 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
Rating: 7 Votes
4 weeks ago
I wonder if this update removes the bezel
Rating: 6 Votes
4 weeks ago

I wonder if this update removes the bezel

Can confirm, it sadly does not :(
Rating: 5 Votes
4 weeks 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.
Rating: 4 Votes
4 weeks 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.
Rating: 4 Votes
4 weeks ago

What about those of us who have the 15 inch 2018 MacBook Pro but don't want to upgrade to Mojave (still on latest HS)?

Upgrade to Mojave. It's a great release.
Rating: 3 Votes
4 weeks ago
Unshaky now built in?
Rating: 2 Votes
4 weeks ago

Post update it's 18F203


iBridge Before Update: 16.16.5125.0.0,0
iBridge Post Update: 16.16.5200.0.0,0

Boot ROM remained at 220.260.171.0.0
Rating: 2 Votes
4 weeks ago

Well it better fix that annoying crashing problem.. Mine was problem free until this month and now every other day it reboots every time I close the lid.


You should re-format with fresh install


No, why, a fresh install (almost) never helps, there are other ways to "debug" macOS.
I started on the very first 10.0b, I never reinstalled the OS, update over update, there were problems/bugs, I solved it myself or just waited for an update.
Yosemite was one of the worst ones I had, had Wifi issues for most of the year until the new OS version, reinstalling would have been wasting time.
Rating: 2 Votes

[ Read All Comments ]