There’s a software program replace you may need missed: a brand new firmware for the Apple USB-C to MagSafe 3 Cable used to cost the most recent MacBook Air and MacBook Execs.

It’s not clear what the firmware fixes or patches, but it surely’s unlikely to incorporate any noticeable adjustments. Based on Aaron Zollo on Twitter, the firmware model is 3.1.12 and has construct quantity 10M1543. So far as we all know, it’s the primary time the firmware has been up to date for the reason that cable arrived in 2021 with the brand new MacBook Professional.

There’s no approach to immediately replace the cable, but it surely ought to replace robotically when plugged into your Mac. Whilst you can test the firmware of your energy adapter by attaching it to your Mac and clicking on the Apple emblem within the prime left nook of the menu bar, then About This Mac, System Report, and Energy, it’s not clear tips on how to test the precise firmware model of the cable. On Twitter, some customers have reported that “the sunshine on the cable went off then again on after about 10 seconds,” which may point out that the firmware was put in.

In teardowns of the MagSafe cable, you’ll be able to clearly see a circuit board with quite a few chips just like the MagSafe iPhone charger. Of their teardown of the MagSafe Charger for the iPhone, ChargerLab unveiled an ST Arm Cortex M4 180Mhz CPU with a floating-point unit, and 512KB flash reminiscence, so it’s doubtless an analogous chip is within the MagSafe 3 charger.

A number of MacBooks use the MagSafe 3 connector for charging, together with the M2 MacBook Air, and the 2021 and 2023 MacBook Execs.

Replace 2/17: Added details about the MagSafe iPhone Charger.