Apple Re-Releases iOS 17.6.1 With Advanced Data Protection Bug Fix [Updated]

Apple today released an updated version of iOS 17.6.1, with the new software coming a week and a half after the launch of the original iOS 17.6.1 update. The new version has a build number of 21G101, up from 21G93.

iOS 17
iOS 17.6.1 can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update.

According to Apple's release notes, the iOS 17.6.1 update addresses an issue that could prevent the enabling or disabling of Advanced Data Protection. It is not clear what is different between the new version of the software and the original version.

This update includes important bug fixes and addresses an issue that prevents enabling or disabling Advanced Data Protection.

The Advanced Data Protection bug impacted a small number of users. Those who tried to turn Advanced Data Protection on and weren't able to get it enabled saw an error message and it was clear it wasn't active. Affected users who tried to turn it off saw it disabled in the interface, though it was actually still active for iCloud data.

Both of those bugs have been fixed in the update. iPhone users who had the bug that prevented Advanced Data Protection from properly turning off will see a notification that asks them to confirm the decision to turn the feature off after installing iOS 17.6.1. Apple says that the few users who experienced this bug had an expected level of security or more, in the situation where ADP did not turn off as expected.

Update: The re-released iOS 17.6.1 update is available over the air on devices that are updating from older versions of iOS, including iOS 12 and iOS 16. If you already had iOS 17.6.1 installed or another version of iOS 17, you will not see the update with the 21G101 build number, nor will devices that have iOS 13, iOS 14, or iOS 15 installed. It fixes an issue that could prevent access to Apple Fitness+.

Related Forums: iOS 17, iPadOS 17

Popular Stories

apple watch ultra yellow

What's Next for the Apple Watch Ultra 3 and Apple Watch SE 3

Friday April 25, 2025 2:44 pm PDT by
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too. 2025 Apple Watch Ultra 3 Apple didn't update the...
iphone 16 display

iPhone 17's Scratch Resistant Anti-Reflective Display Coating Canceled

Monday April 28, 2025 12:48 pm PDT by
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors. Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
iPhone 17 Air Pastel Feature

iPhone 17 Reaches Key Milestone Ahead of Mass Production

Monday April 28, 2025 8:44 am PDT by
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report. iPhone 17 Air mockup based on rumored design The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Beyond iPhone 13 Better Blue

20th Anniversary iPhone Likely to Be Made in China Due to 'Extraordinarily Complex' Design

Monday April 28, 2025 4:29 am PDT by
Apple will likely manufacture its 20th anniversary iPhone models in China, despite broader efforts to shift production to India, according to Bloomberg's Mark Gurman. In 2027, Apple is planning a "major shake-up" for the iPhone lineup to mark two decades since the original model launched. Gurman's previous reporting indicates the company will introduce a foldable iPhone alongside a "bold"...
iPhone 17 Air Pastel Feature

iPhone 17 Air Launching Later This Year With These 16 New Features

Thursday April 24, 2025 8:24 am PDT by
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device. Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
iPhone 17 Pro Blue Feature Tighter Crop

iPhone 17 Pro Launching Later This Year With These 13 New Features

Wednesday April 23, 2025 8:31 am PDT by
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 April 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 ...

Top Rated Comments

jz0309 Avatar
9 months ago
I am all for bug fixes and security updates, but, but, re-releasing some version a week later? Please call it .2 and not use the same version again
Score: 58 Votes (Like | Disagree)
MrRom92 Avatar
9 months ago
Why would they not call it 17.6.2? This is so stupid
Score: 39 Votes (Like | Disagree)
ELman Avatar
9 months ago
I think I will wait for next weeks re-release.
Score: 37 Votes (Like | Disagree)
antiprotest Avatar
9 months ago
I already installed the original update and now I am stuck with the inferior version. :(
Score: 20 Votes (Like | Disagree)
dadiy Avatar
9 months ago
Not showing for me yet.
Score: 12 Votes (Like | Disagree)
vertsix Avatar
9 months ago
I am on 21G93 and do not see this newer build.
Score: 12 Votes (Like | Disagree)