Apple Stops Signing iOS 13.3 Following Release of iOS 13.3.1

Following the release of iOS 13.3.1 on January 28, Apple has stopped signing iOS 13.3, which means downgrading to that version of iOS is no longer possible.

iOS 13.3 was a major update that included Communication Limits for Screen Time, support for NFC, USB, and Lightning FIDO2-compliant security keys in Safari, and more.

Apple routinely stops signing older versions of software updates after new releases come out in order to encourage customers to keep their operating systems up to date.

iOS 13.3.1 is the current publicly available version of iOS, with the update introducing a toggle for the U1 Ultra Wideband chip in the newest iPhones along with various bug fixes and improvements.

Developers and public beta testers can also download iOS 13.4, an upcoming update that includes a new toolbar in the Mail app, iCloud Folder Sharing, new Memoji stickers, and more.

Top Rated Comments

benshive

81 months ago

Conveniently there’s a jailbreak for A12/A13 devices being released in the next 24 hours that supports up to 13.3.

Score: 5 Votes (Like | Disagree)

MattMJB0188

81 months ago

Proudly still running 12.4.1 on my iPhone 8.

Score: 3 Votes (Like | Disagree)

thadoggfather

81 months ago

Conveniently there’s a jailbreak for A12/A13 devices being released in the next 24 hours that supports up to 13.3.

haha yeah * following tweets by pwn20wnd of a 13.3 jailbreak

13.3.1 has been out for a bit now

Score: 3 Votes (Like | Disagree)

supergt

81 months ago

Proudly still running 12.4.1 on my iPhone 8.

I’ll do you .1 better. Running 12.4 on my Xs.

Score: 2 Votes (Like | Disagree)

rforno

81 months ago

Any minute now Apple will activate the daily nag servers to notify all iOS users to install iOS 13 for us non-conformists. It's been quiet for a few weeks.

No kidding. Talk about living inside the nanny state....as a power user and someone who does NOT YET want to update my IP8 (and knows full well the 'consequences' for not being currently patched) I'm so tired of Cupertino telling me what I should be doing.

Score: 1 Votes (Like | Disagree)

thadoggfather

81 months ago

I’m actually pretty happy with 13.3 so far ! My first foray into iOS 13 across a few devices

Score: 1 Votes (Like | Disagree)

Read All Comments

Popular Stories

iOS 27 Will Add These New Features to Your iPhone

Saturday May 2, 2026 8:43 am PDT by Joe Rossignol

Apple is expected to unveil iOS 27 during its WWDC 2026 keynote on June 8, and there are already many rumored features and changes for iPhones. The first developer beta of iOS 27 will likely be available immediately following the keynote, and a public beta typically follows in July. Following beta testing, the software update should be released to all users with a compatible iPhone in...

• 94 comments

Apple Just Released a New Accessory

Monday May 4, 2026 8:13 am PDT by Joe Rossignol

Apple today released a new Pride Edition Sport Loop for the Apple Watch. The band features a rainbow design with 11 colors of woven nylon yarns. The new Pride Edition Sport Loop is available to order now on Apple.com and in the Apple Store app in 40mm, 42mm, and 46mm sizes, and it will be available at Apple Store locations starting later this week. In the U.S., the band costs $49. There...

Why You Might Want to Wait to Buy a MacBook Pro

Friday May 1, 2026 3:43 pm PDT by Juli Clover

Apple refreshed the 14-inch and 16-inch MacBook Pro with M5 Pro and M5 Max models in March 2026, but depending on your needs and interests, you might want to skip this generation because there's something better in the works. The M5 Pro and M5 Max MacBook Pro models have faster chips, but the same design that Apple has used since 2021. An updated design with new display technology and faster ...

• 178 comments

Top Rated Comments

Popular Stories

iOS 27 Will Add These New Features to Your iPhone

Apple Just Released a New Accessory

Why You Might Want to Wait to Buy a MacBook Pro

Next Article

Videos

Guides

Upcoming

Other Stories