MagSafe Charger Firmware Update 255 (10M1821) [Review]
Apple has released a new MagSafe charger firmware 255 also known as 10M1821, to replace the previous 247 (10M229) version. Most likely, this rollout fine tunes wireless charging for the new iPhone 14 models and the recently released AirPods Pro 2.
MagSafe Charger Firmware 255
Unfortunately, Apple doesn’t provide any release notes. It’s unclear yet what’s new, but we’re most likely dealing with bug fixes and performance improvements.
Fact: A series of iPhone 14 users have complained that their new devices are overheating faster than previous models during MagSafe charging and that the charing process is often paused to allow the phone to cool down!
More: We’ve also received reports of AirPods Pro 2 charging very slow wirelessly over MagSafe, prior to this update!
Credits: This update has been spotted by Macrumors.
How To Update MagSafe Firmware 255
MagSafe chargers update automatically, over-the-air, when the optimal conditions are met.
To force the update place your MagSafe compatible device (iPhone 12 or later) on the charger and keep it connected to the Internet while charging.
MagSafe Firmware Not Updating?
If your wireless Apple charger hasn’t upgraded yet, you might try to remove the case from your iPhone while charging.
According to Victor, this is the trick that unlocked the firmware 255 update.
How To Check MagSafe Charger Firmware
To see if your charger has updated to the most recent 255.0.0.0 firmware, proceed as follows:
- 1. Connect iPhone to MagSafe charger.
- 2. Open Settings and browse for General -> Apple MagSafe Charger.
- 3. Check the Firmware Version.
Fact: If it shows 255.0.0.0 it has already updated. If you see 247.0.0.0, 126.96.36.199 or 188.8.131.52 it means that your MagSafe charger is running an older firmware version.
Not owning an Apple MagSafe charger yet? You can grab one now at a discounted price from Amazon (Save 5%)!
Disclaimer: iPhoneTricks.org has an affiliate partnership with Amazon. If you purchase a product after clicking the above links, we will receive a small commission that helps us covers website costs. The final price of your product isn’t influenced by this incentive!
Has your MagSafe charger updated to firmware 255? Do you notice any improvements? What iPhone model are you using. Are the AirPods Pro 2 charging as expected? Share tour feedback in the comments.
Related: Is your Apple MagSafe charger genuine? Here is how to check it out.
My MagSafe is still at 247.0.00 and my phone is on the charger everyday it won’t update
Try to charge it to 100% via cable. Then connect it to the MagSafe puck and bring it into sleep mode. Let us know if it helps.
Take of you’re phone from the case will update! Mine was on the case and couldn’t update. One night I decide to take off from the case and bingo. Update was done!
Thanks for the tip Victor. We’re updating it into the main content of the article.
Has anyone been able to update their MagSafe charger firmware using an iPhone that is running the developer beta iOS? I can’t get mine to update from 247 to 255, I’ve tried plugging it in to my Mac and my iPad, and I’ve tried taking my iPhone out of its case. I am running the developer beta 16.3 and I’m wondering if that’s the issue.
Yes, beta version could be a cause. What did you run before the beta? You can briefly downgrade and see if it helps: