Here’s a complete step-by-step tutorial on how to find out the firmware version of the MagSafe Charger using an iPhone.
You Can Find Out the Firmware Version of Your MagSafe Charger Using Your iPhone in Just a Few Simple Steps
Apple’s MagSafe Charger is a complicated little accessory that runs software to ensure charges as smoothly and safely as possible.
From time to time, it receives firmware updates as well, so that bugs are ironed out and efficiency prevails.
If you want to know the current firmware version of your MagSafe Charger, there’s a way to do it. And the steps outlined below apply to both 15W and 25W versions of the charger.
Step 1. Make sure your MagSafe Charger is connected to a USB-C charger, ready to charge an iPhone.
Step 2. Connect your iPhone to the MagSafe Charger and let charging begin.
Step 3. Unlock your iPhone.
Step 4. Launch the Settings app.
Step 5. Now to go General > About.
Step 6. Scroll down a little and you’ll see the Apple MagSafe Charger entry. Tap on it to open.

Step 7. You’ll see all the necessary details on this screen, including Manufacturer, Model Number and Firmware Version.

If you get to step 6 and do not see the ‘Apple MagSafe Charger’ entry at all, it’s highly likely that your charger is a counterfeit one.