HomePod Firmware Possibly Reveals Apple Watch With LTE and 4K Apple TV With HDR10 and Dolby Vision

iOS developer Guilherme Rambo has discovered a reference to a 4K HDR display mode in the HomePod's firmware, lending credence to rumors that Apple is testing a fifth-generation Apple TV capable of streaming 4K resolution video.

itunes apple tv 4k
HomePod doesn't have a display, and iOS devices lack the resolution for native 4K playback, so the discovery likely pertains to the Apple TV.

Rambo also discovered strings kCADisplayModeDolby and kCADisplayModeHDR10, suggesting that a 4K Apple TV could support both the Dolby Vision and HDR10 color formats for high-dynamic-range video.

Apple has also listed select movies as 4K and HDR in iTunes purchase history, at least in Canada and the United Kingdom. The content is still only playable in standard definition or HD, which varies from 720p to 1080p, but Apple could be preparing to offer iTunes content in 4K HDR for its new Apple TV.

Another developer Jeffrey Grossman‏ also spotted a possible reference to an Apple Watch with LTE support. The string, which refers to GizmoPreservingeSIM, lends credence to a report yesterday that claimed Apple Watch Series 3 models will feature cellular connectivity for use without a paired iPhone.

The relevant bit of that string is the mention of a SIM, as the Apple Watch Series 3 would presumably have an embedded SIM card if it had cellular connectivity. Another string mentions GizmoRadioBundleIdentifier, which could refer to the Apple Watch Series 3's cellular radio, reportedly to be supplied by Intel.

For those unaware, in 2015, The New York Times reported the Apple Watch was codenamed Gizmo internally.

Inside Apple, members of the team that worked on the watch product, code-named Gizmo, say it was a difficult engineering challenge.

The Gift That Keeps on Giving

Last week, Apple seeded an over-the-air firmware file for the HomePod, revealing that it will run a slightly modified version of iOS. The pre-release software is said to correspond with iOS 11.0.2, and it contains references to several unreleased features that would normally be redacted before a public release.

homepod software
The firmware contains a payload that can be unpacked into a filesystem using a few developer tools, giving anyone skilled enough the ability to search through thousands of strings in the software using Terminal commands and disassembly apps like Hopper. For the past eight days, that's exactly what's happened.

Since the HomePod firmware is based on a full iOS stack, many discoveries have been made not only about the smart speaker, but also potentially about the so-called iPhone 8, Apple TV, and Apple Watch.

Thanks to the HomePod firmware, we know that that the iPhone 8's front camera may record 4K video at 60 FPS, and that its infrared facial recognition capabilities may work with Apple Pay. The firmware also revealed a glyph of an iPhone 8 with a full-front display with a notch at the top for the earpiece and sensors.

As for the HomePod itself, it's been discovered that the smart speaker's multi-color LED waveform visible when interacting with Siri measures in at 272×340 pixels. HomePod also appears to have 1GB of RAM, and some of the speaker's sound effects were found buried in the firmware.

HomePod doesn't launch until December, so the firmware was likely released by accident, under the identifier AudioAccessory1,1.

apple tv j105a
Update: MacRumors discovered the string J105a in the HomePod firmware, consistent with the fifth-generation Apple TV's internal codename first revealed by Bloomberg reporter Mark Gurman in February.

Tag: 4K

Top Rated Comments

iReality85 Avatar
86 months ago
poor homepod engineer. :(
Let’s all take a minute and bow our head to the Apple engineer who blessed us with these goodies. Amen.
Better pray he finds a new job soon if he gets fired.
Jeez, someone really dropped the ball.
No way, Apple is eating this up. What better way for them to promote their own upcoming (but still unreleased) products than by 'leaking' some information through another unreleased product?

Trust me, Apple knew full well the HomePod's coding would be picked apart by devs. And the internet always loves a good easteregg hunt. It keeps HomePod in the headlines, keeps the hype train running, and comes directly from Apple. It's a win-win in my opinion.
Score: 49 Votes (Like | Disagree)
farewelwilliams Avatar
86 months ago
poor homepod engineer. :(
Score: 40 Votes (Like | Disagree)
Joe Rossignol Avatar
86 months ago
Is the HomePod firmware Apple’s biggest ever leak? It’s revealed so much about more than one upcoming product. Somebody is kicking themselves hard for this, if Cook’s not doing it for them.
I think the iPhone 4 is the biggest Apple leak ever.
Score: 22 Votes (Like | Disagree)
nfl46 Avatar
86 months ago
Let’s all take a minute and bow our head to the Apple engineer who blessed us with these goodies. Amen.
Score: 21 Votes (Like | Disagree)
Bako-MacAddict Avatar
86 months ago
Wow. Very impressed how much information we have received from a simple firmware. It's "magical" Jony Ive's voice.

Man, I'm about to drop some money for the fourth quarter. My wallet is getting nervous.
Score: 15 Votes (Like | Disagree)
iReality85 Avatar
86 months ago
Dolby Vision support on the new Apple TV is excellent news. I was wondering about this after news broke about the next Apple TV supporting 4K. Dolby Vision is the cherry on top for me. Seals the deal.

LeakyPod is best pod ever.:D
Score: 15 Votes (Like | Disagree)

Popular Stories

Beyond iPhone 13 Better Blue Face ID Single Camera Hole

Six Reasons to Wait for Next Year's iPhone 17

Thursday February 22, 2024 4:20 am PST by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models concurrently, which is why we sometimes get rumored feature leaks so far ahead of launch. The iPhone 17 series is no different, and already we have some idea of what to expect from Apple's 2025 smartphone lineup. If you plan to skip...
General Apps Messages

Apple Announces 'Groundbreaking' New Security Protocol for iMessage

Wednesday February 21, 2024 6:00 am PST by
Apple today announced a new post-quantum cryptographic protocol for iMessage called PQ3. Apple says this "groundbreaking" and "state-of-the-art" protocol provides "extensive defenses against even highly sophisticated quantum attacks." Apple believes the PQ3 protocol's protections "surpass those in all other widely deployed messaging apps," according to its blog post:Today we are announcing...
iPhone Notch

Apple Explored These Notch and Dynamic Island Designs for iPhones

Friday February 23, 2024 2:05 pm PST by
With the iPhone 14 Pro models in 2022, Apple introduced the Dynamic Island, which can morph and expand to display system alerts, sports scores, and a variety of other information. The feature makes the space surrounding the front camera and Face ID sensors useful compared to the notch on older iPhone models. Apple explored a variety of ideas for the iPhone's notch area over the years before...
Next Generation CarPlay Porsche 1

Apple Launching Next-Generation CarPlay This Year With These New Features

Wednesday February 21, 2024 2:03 pm PST by
Apple recently updated its website to confirm that the first vehicle models with next-generation CarPlay support will debut "in 2024." This wording is shown on Apple's regional websites for the U.S., Canada, Australia, New Zealand, and many other countries. The iOS 17.4 beta includes code-level references to eight new CarPlay apps:Auto Settings: This app will let you manage paired iPhones...
cracked glass vision pro

Handful of Apple Vision Pro Units Develop Identical Crack in Cover Glass

Friday February 23, 2024 4:46 am PST by
A small number of Apple Vision Pro owners have claimed that their headsets developed a hairline crack down the middle of the front cover glass, despite having never been dropped or mishandled. Photo of hairline crack in Vision Pro front glass (credit: Reddit user Inphenite) The first report was posted in the subreddit /r/VisionPro about 18 days ago, and several more have appeared in the last...
iOS 17

iOS 17.4 Will Add These New Features to Your iPhone

Monday February 19, 2024 6:52 am PST by
Apple last month confirmed that iOS 17.4 will be released in March, and the update includes several new features and changes for the iPhone. Key new features in iOS 17.4 include major App Store changes in the EU and Apple Podcasts transcripts. The update also adds new emoji and includes preparations for the launch of next-generation CarPlay later this year. More details about the new...
Oled iPads and MackBook Pro Notch

Apple's OLED Roadmap: New iPad Mini, Foldable iPad Pro, and More

Wednesday February 21, 2024 5:29 am PST by
Apple is planning to launch at least nine new devices with OLED displays across the iPad and MacBook product lines, according to an updated forecast from research firm Omdia that sets out the company's plans in detail. As widely rumored, Apple's push to transition to OLED will apparently be jump-started by the release of new 11- and 13-inch iPad Pro models this year. The displays will...
New Macs iPads iOS 17 4

What to Expect at Potential Apple Event in March: iPads, Macs, and More

Friday February 23, 2024 8:35 am PST by
Apple often holds its first media event of the year in March, so the company could be just weeks away from announcing new products. Below, we have outlined what to expect from a potential Apple Event this March. Past Apple Events in March Apple has held five events in March since 2015:Monday, March 9, 2015 Monday, March 21, 2016 Tuesday, March 27, 2018 Monday, March 25, 2019 Tuesday,...