Apple Releases MacBook SMC Firmware Update 1.1 - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases MacBook SMC Firmware Update 1.1

Apple has released MacBook SMC Firmware Update 1.1, which aims to improve the MacBook's internal monitoring system and address issues with unexpected shutdowns.

A number of MacBook owners have had their MacBooks intermittently randomly shut down on them, an issue which has come to be known as MacBook RSS (Random Shutdown Syndrome). In a recent summary of the issue, including a pending class-action lawsuit, AppleInsider quotes Ogrady's PowerPage that nails down the root cause of the issue to the following:

"Essentially the heatsink can expand during use, and comes into contact with the lead from the [thermometer's] sensor cable," reads a more detailed explanation posted at Ogrady's Power Page. "A short circuit results, and the SMC (System Management Controller) pulls the plug. Once the system cools down, the heatsink [recedes] and the contact is broken."

As is the case with all firmware upgrades, Apple cautions users to not interrupt the update. Detailed information regarding the update can be found here.

Related Forum: MacBook Neo

Popular Stories

iphone 18 pro blue%402x

iPhone 18 Pro: Dark Cherry, Light Blue, and Dark Gray Chassis Leaked [Update]

Thursday June 4, 2026 5:18 am PDT by
Update: Since publication, new information has come to light suggesting the images have been AI-manipulated and are not in fact iPhone 18 Pro chassis parts. The original article follows. The color options Apple is reportedly planning for the upcoming iPhone 18 Pro and ‌iPhone 18 Pro‌ Max have appeared online today in the form of images of chassis parts of unknown authenticity....
Aston Martin CarPlay Ultra Screen

Apple Says CarPlay Ultra is Coming to These Vehicle Brands

Thursday May 21, 2026 11:53 am PDT by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly a year later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. CarPlay Ultra...
iOS 27 All the New App Features

iOS 27: All the Rumored App Features

Wednesday June 3, 2026 3:48 pm PDT by
Siri is getting a major overhaul in iOS 27, but Apple also has some big updates planned for apps like Camera, Photos, and Wallet. There are multiple new AI features in the works, plus some non-AI upgrades. Camera Apple is moving Visual Intelligence from the Camera Control button to the Camera app in iOS 27, according to Bloomberg. There will be a Siri mode that will be available alongside...