There’s a software program replace you might need missed: a brand new firmware for the Apple USB-C to MagSafe 3 Cable used to cost the latest MacBook Air and MacBook Execs.
It’s not clear what the firmware fixes or patches, however it’s unlikely to incorporate any noticeable modifications. 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 technique to immediately replace the cable, however it ought to replace mechanically when plugged into your Mac. Whilst you can examine the firmware of your energy adapter by attaching it to your Mac and clicking on the Apple brand within the high left nook of the menu bar, then About This Mac, System Report, and Energy, it’s not clear the best way to examine the particular 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 might point out that the firmware was put in.
In teardowns of the MagSafe cable, you possibly can clearly see a circuit board with quite a few chips much 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 probably the same 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.
