Apple Updates AirPods Pro Firmware to Version 4A402 and AirPods 3 Firmware to 4B66
Apple today released a new 4A402 firmware update for the AirPods Pro, which is up from the prior 4A400 firmware that was released back in October. Apple has also updated the AirPods 3 firmware to 4B66, up from the 4B61 that was previously available.

Apple does not offer information on what's included in refreshed firmware updates for the AirPods, so we don't know what improvements or bug fixes the new firmware brings.
There's no standard way to upgrade the AirPods software, but firmware is generally installed over-the-air while the AirPods are connected to an iOS device. Putting the AirPods in the case, connecting the AirPods to a power source, and then pairing the AirPods to an iPhone or an iPad should force the update after a short period of time.
You can check your AirPods or AirPods Pro firmware by following these steps:
- Connect your AirPods or AirPods Pro to your iOS device.
- Open the Settings app.
- Tap General.
- Tap About.
- Tap AirPods.
- Look at the number next to "Firmware Version."
If we find notable changes after the firmware updates are installed, we'll share details, but the software likely includes performance improvements and bug fixes.
Popular Stories
U.S. President Donald Trump on Wednesday announced that steep tariffs will be applied to imports from many countries, starting April 9. The tariffs could have a significant impact on Apple, as the company assembles the majority of iPhones in China, and products imported to the U.S. from China will be subject to a 54% tariff.
iPhone prices could increase by up to 43% in the U.S. due to the...
If you have an older Apple device that you've been considering upgrading, you're probably wondering how the newly announced tariffs might impact prices going forward, and whether it's worth buying now before there's a price hike.
Given analyst and economist responses to the tariffs, market panic, and Trump's stance on the current financial chaos, the answer is that making a purchase...
iOS 19 will not be available on the iPhone XR, iPhone XS, or the iPhone XS Max, according a private account on social media site X that has accurately provided information on device compatibility in the past.
The iPhone XR, iPhone XS, and iPhone XS Max all have an A12 Bionic chip, so it looks like iOS 19 will discontinue support for that chip. All other iPhones that run iOS 18 are expected...
Apple has released iOS 18.4, bringing further refinements to Apple Intelligence features, a neat new capability to iPhone 15 Pro devices, new emoji, and more.
While not quite as packed with new features as Apple's preceding iOS 18 point releases, iOS 18.4 still introduces enhancements that aim to make your iPhone smarter and more intuitive. Below, we've listed 12 new things your iPhone ...
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025:
Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
Apple stock dropped 4% in early Friday trading, broadly following yesterday's trend after China announced reciprocal tariffs in response to U.S. President Trump's trade policies.
The latest decline follows Thursday's dramatic 9% plunge that erased nearly $300 billion from Apple's market value – the company's worst single-day performance in five years – amid growing fears that Trump's...