iOS 15.8.6 ― Bug Fixes, Changes, and Improvements

[Banglazed]

iOS 15.8.6

Release Date ― January 26, 2026
Build Number ― 19H402
Darwin Kernel Version ―

This update provides important security updates and is recommended for all users.

New Features & Changes
New Issues
Remaining Issues
Resolved Issues

Additional Notes

• Developers and testers can report bugs using the Feedback app. If you don't have the public or developer profiles installed, you can still open the app by entering the following URL in Safari:
  

  applefeedback://

• iOS Release Notes
• iOS Beta Release Notes
• iOS Security Updates

Spoiler: Modem Firmware

• Qualcomm iPhone 7/7 Plus: 9.01.00
• Intel iPhone 7/7 Plus: 6.01.01
• iPhone SE (1st gen): 13.00.00
• iPhone 6S/6S Plus: 9.61.00

Spoiler: Carrier Version

United States

• Verizon - 50.0.1
• Visible (MVNO Verizon) 46.0
• Verizon (iPad) - 41.0
• T-Mobile - 50.0.2
• AT&T - 50.0.2
• FirstNet - 50.0.1
• FirstNet (iPad) - 41.7.6
• Cricket - 40.5.2
• MetroPCS - 50.0.1
• U.S. Cellular - 46.7.24
• Sprint - 40.0
• TracFone/Straight Talk/Walmart Family Mobile - 50.0.1
• Xfinity Mobile 45

Australia

• Optus - 50.0.1
• Telstra - 50.0.1
• Vodafone AU - 50.0

Belgium

• BASE - 33.0
• Orange B - 32.5.7
• Proximus - 45.0
• Telenet - 44.1

Canada

• Videotron - 50.0
• Rogers - 41.0
• Fido - 49.0
• Bell - 48.5
• Telus - 50.0
• Freedom/Shaw Mobile - 49.0
• Fizz - 50.0
• Virgin Mobile - 50.0

Denmark

• 3 DK - 46.7.11
• TDC 50.0

France

• Bouygues Telecom - 40.0
• Orange France - 50.0

Germany

• Vodafone.de - 48.5
• Telekom.de - 50.0
• O2-DE - 48.5.1

Greece:

• Cosmote - 38.0

Guatemala

• TIGO GT - 49.0

India

• Airtel - 49.0
• Jio - 49.0
• Vi India (Vodafone Idea) - 50.0

Ireland

• Eir - 33.5
• Vodafone IE - 38.0

Mexico

• Mexico - Telcel - 50.0

Morocco

• Orange - 50.0

Netherlands

• KPN - 50.0
• Vodafone NL - 45.0

Poland

• T-Mobile -
• Orange - 49.6.3 (Voice & SMS)
• Play - 31.0

Portugal

• Vodafone P - 40.0

Southeast Asia

• Singapore Singtel -
• Philippines Globe - 46.0
• Philippines Globe (iPad) - 38.0
• Philippines Smart - 44.0
• Thailand AIS -
• Malaysia Umobile - 33.0
• Malaysia Maxis -33.0
• Malaysia Digi -
• Malaysia celcom -
• Hong Kong - 32.0
• Taiwan -

Sweden

• Comviq -
• Tre - 31.0

Switzerland

• Salt - 45.0
• Swisscom - 45.0

Turkey

• Turkcell (Lifecell) - 36.5.5
• Vodafone TR - 32.0
• Turk Telekom - 32.0

United Kingdom

• EE - 50.0
• BT-UK (MVNO on EE)- 50.0.1
• Three - 50.1
• iD Mobile (MVNO on Three) - 36.5.4
• O2-UK - 50.0
• Giffgaff (O2 MVNO) - 41.0
• Vodafone UK - 50.0
• Virgin Mobile (EE MVNO) - 39.5
• Lebara (Vodafone MVNO) - 50.0

Spain

• Orange ES - 50.0

Other

• Docomo - 32.5.10
• AlwaysOnline -

 

[MacMorrison]

Thanks!

"This update provides important bug fixes and is recommended for all users."

It's amazing to see iOS 15 still getting updates.

 

[FNH15]

Did anyone else notice there is an IPSW for the iPhone 6? Not 6S.

Someone with an iPhone 6 should see if iOS 15.8 will install on it...

 

[TheWetCoast]

I just downloaded this update on my old, retired iPad … I had read this update was available and so turned on the old beast just to keep it current. It downloaded fine, then I went to install it, but I keep getting a message it can’t be verified because I am not connected to the internet …. But I am, I can update Safari web pages with no problem, and of course I downloaded the update. I rebooted, but still have the same problem message. Any ideas ?

 

[BeauGiles]

Telstra (Australia) is reporting that the 15.8.6 update has been paused.

We've identified an issue with some older Apple devices connecting to our network

We're currently investigating an issue making and receiving calls, including calls to 000, on older Apple iPhone devices.

www.telstra.com.au

Incoming 15.8.7 update ASAP?

I just downloaded this update on my old, retired iPad … I had read this update was available and so turned on the old beast just to keep it current. It downloaded fine, then I went to install it, but I keep getting a message it can’t be verified because I am not connected to the internet …. But I am, I can update Safari web pages with no problem, and of course I downloaded the update. I rebooted, but still have the same problem message. Any ideas ?

As above, perhaps because it's no longer being signed.

 

[geta]

Are there any issues with this update on OG SE?

 

[Grumpus]

Are there any issues with this update on OG SE?

I installed it on my OG SE and haven't run into any problems so far.

 

[TheWetCoast]

UPDATE — without doing anything except wait for 24 hours, the update verified itself and installed. It appears Apple fixed the issue on their end.

 

[sdfox7]

Apple is signing 12.5.8, 15.8.6, and 18.7.4 again as of this afternoon.

The issue is with 16.7.13 on Telstra Australia. Users can back up their data, wipe the device by installing 16.7.12 which is still being signed. This will erase all data!

iPhone 8 IPSW 16.7.12

iPhone 8 Plus IPSW 16.7.12

iPhone X IPSW 16.7.12

We've identified an issue with some older Apple devices connecting to our network

We're currently investigating an issue making and receiving calls, including calls to 000, on older Apple iPhone devices.

www.telstra.com.au