Apple Releases Firmware Update for 140W USB-C Power Adapter - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases Firmware Update for 140W USB-C Power Adapter

16 inch MBP and 140W Charger FeatureApple today released a firmware update (version 1.4.90) for its 140W USB-C Power Adapter.

It is unclear what is included in the latest firmware, as Apple does not publish release notes for this. The update will be installed automatically over time when the power adapter is plugged in and connected to a Mac or other device. There is no way to manually apply the update.

Popular Stories

All Screen iPhone 2030 Feature Sans Text

iPhone 18 Pro: Nine Reasons Not to Upgrade This Year

Monday September 7, 2026 5:01 am PDT by
Apple is set to unveil new iPhone 18 Pro and iPhone 18 Pro Max models on Wednesday, September 9, and the devices are expected to feature a design that's largely similar to the iPhone 17 Pro models, with a peppering of enhancements inside. Major changes are not expected until next year, when Apple is expected to introduce a radically redesigned 20th-anniversary iPhone. If you're thinking of...
apple surprise and shine event

Apple Event Today: iPhone 18 Pro and iPhone Duo Cheat Sheet

Tuesday September 8, 2026 10:24 am PDT by
Apple's biggest event of the year is almost here, and all eyes are on Cupertino. With the first foldable iPhone expected to headline Apple's "Surprise and Shine" event on Wednesday, September 9, at 10:00 a.m. Pacific Time, the rumor mill has been running full throttle, fuelled by the biggest single design change in the life of the iPhone. To get you up to speed, here's a quick reference...
apple watch series 12

Leak Hints at Four New Features for Apple Watch Series 12 and Ultra 4

Monday September 7, 2026 8:57 am PDT by
Ahead of the announcement of the Apple Watch Series 12 and Ultra 4 later this week, code in the watchOS 27 and iOS 27 betas points to a series of new features for the product line. The information comes from a new post from MacRumors forums member "pdfu." The findings include: New "Readiness" app: An all-new separate Watch app referred to in code as "Readiness," distinct from the...

Top Rated Comments

rosegoldoli Avatar
14 hours ago at 01:41 pm
the concept of a firmware update for an adapter
Score: 58 Votes (Like | Disagree)
13 hours ago at 01:52 pm
"Help, my charging brick got bricked!"
Score: 46 Votes (Like | Disagree)
It’s always something Avatar
14 hours ago at 01:41 pm
This implies that charging bricks are potentially hackable. Pretty sure I don’t like that 😬
Score: 30 Votes (Like | Disagree)
13 hours ago at 01:55 pm

This is a good thing. In the past, updates happened on the assembly line so you were just stuck with whatever mistake was made for the version you had.
I disagree: When it was hardcoded, the motivation was to get it right the first time or face the consequences of a costly recall. Now, just send it out in beta! We can push a fix whenever. Or... Just never fix it, unless enough people complain.
Score: 28 Votes (Like | Disagree)
chrono1081 Avatar
13 hours ago at 01:56 pm

I disagree: When it was hardcoded, the motivation was to get it right the first time or face the consequences of a costly recall. Now, just send it out in beta! We can push a fix whenever. Or... Just never fix it, unless enough people complain.
You can disagree but that's literally how things happened (and still happen). Look at any single piece of hardware out there and you'll see version numbers. This is what they are.
Score: 19 Votes (Like | Disagree)
chrono1081 Avatar
13 hours ago at 01:52 pm

the concept of a firmware update for an adapter
This is a good thing. In the past, updates happened on the assembly line so you were just stuck with whatever mistake was made for the version you had.
Score: 17 Votes (Like | Disagree)

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors