iOS 17.2.1 ― Bug Fixes, Changes, and Improvements

[Banglazed]

iOS 17.2.1

Release Date ― December 19, 2023
Build Numbers ― 21C66
Darwin Kernel Version ― 23.2.0: Sun Nov 12 06:35:58 PST 2023; root:xnu-10002.60.75.0.3~27

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

iOS 17.2 RC SDK Release Notes

Spoiler: iOS & iPadOS 17.2 RC SDK Release Notes

​

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 17 Preview
• iOS 17 Features (PDF)
• iOS 17 Press Release
• iOS 17 Release Notes
• iOS 17 Release Notes for Enterprise
• iOS Beta Release Notes
• iOS Security Updates

Spoiler: How to Install beta via OTA/IPSW [Guide]

How to install beta via OTA?

1. Enable Beta Updates (Settings>General>Software Updates>Beta Updates)
2. Check and sign into the right Apple ID to access beta
3. Select which beta you would like to receive (Public/Developer)
4. Hit "Back" and pull down to refresh
5. Do an encrypted backup or iCloud backup before installing the beta from release build
6. Install the beta

If you no longer wish to receive beta updates:

1. Turn off the Beta Updates (you can also sign out of your Apple ID to unlink your developer account)
2. Wait for the next public release or follow the guide below to install the IPSW release build

Troubleshoot: Sometimes, the beta update will not show so you may need to enable/disable Airplane Mode or restart your device before rechecking for update.

How to install beta via IPSW on Mac?

1. You will need to install either Xcode beta or MobileDevice.pkg which can be extracted from the Xcode beta (tap with two finger or right click to Show Package Content>Contents>Resources>Packages>MobileDevice.pkg - this will work on older Macs that do not support the latest macOS or Xcode beta)
2. Do an encrypted backup in Finder in case you need to restore your device
3. Hold down Option + Check for Update and select the appropriate IPSW file for your device (whether you're updating to a newer/beta firmware, reinstalling the same firmware or downgrading to previous firmware while retaining all your data) downloaded from Apple using your free developer account. Note: You must have an active internet connection as it will check the IPSW signing status before it will proceed with the update.
4. Enter your iPhone passcode once prompted to proceed.

Notes/Tips:

• Always keep a backup in case you need to restore your data if you restore your device
• It may be better to close all apps before installing the updates and/or turn off your device for about a minute or restart a few minutes after your device is updated
• You can also manually select the IPSW if you are restoring your device using Option + Restore iPhone. Restore will wipe all your personal data which you will need to restore your backup either using iCloud backup or Finder/iTunes backup
• You do not need to install the MobileDevice.pkg from each Xcode beta version unless Finder does not recognize the new iOS beta
• There is no MobileDevice.pkg equivalent to iTunes for PC which would require a new iTunes to support new/beta iOS
• If you receive a new iPhone, you can connect to Mac to update or restore your device to the latest iOS before setting up your device.
• You can also use the Recovery Mode/DFU to update or restore your device by manually selecting IPSW

Spoiler: Modem Firmware

• iPhone 15/Plus/Pro/Max: 1.22.05
• iPhone 14/Plus/Pro/Max: 2.20.06
• iPhone 13/mini/Pro/Max/SE (3rd gen): 3.20.05
• iPhone 12/mini/Pro/Max: 4.20.05
• iPhone 11/Pro/Max/SE (2nd gen)/iPad Air (4th gen): 5.00.00
• iPhone XR/XS/Max: 6.00.00

Spoiler: Carrier Version

Australia

• Optus - 51.0
• Telstra - 55.0
• Vodafone AU - 51.0

Belgium

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

Brazil (updated 17.2 RC)

• Claro Brasil - 57.0
• Vivo - 57.0
• TIM -
• Oi -

Canada

• Videotron - 53.0
• Rogers - 57.0
• Fido - 56.0
• Bell - 57.0
• Telus - 54.8.8
• Public Mobile - 54.8.4
• Freedom/Shaw Mobile - 54.8.6
• Fizz - 53.0
• Virgin Mobile - 50.0

Denmark

• 3 DK - 46.7.11
• TDC 57.0

France

• Bouygues Telecom - 40.0
• Orange France - 57.0

Germany

• Vodafone.de - 56.0
• Telekom.de - 56.0
• O2-DE - 55.0

Greece:

• Cosmote - 38.0

Guatemala

• TIGO GT - 49.0

India

• Airtel - 54.10
• Jio - 54.10.2 (iPhone) and 54.8.4 (iPad)
• Vi India (Vodafone Idea) - 54.0

Ireland

• Eir - 33.5
• Vodafone IE - 38.0

Mexico

• AT&T - 57.0
• Telcel - 57.0

Morocco

• Orange - 50.0

Netherlands

• KPN - 57.0
• Vodafone NL - 45.0

Poland

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

Portugal

• Vodafone P - 40.0

Romania

• Orange RO - 55.0

Southeast Asia

• Singapore Singtel -
• Philippines Globe - 53.7.2
• Philippines Globe (iPad) - 38.0
• Philippines Smart - 57.0
• Thailand AIS - 53.0
• Thailand DTAC - 53.0
• Malaysia Umobile - 33.0
• Malaysia Maxis -33.0
• Malaysia Digi -
• Malaysia celcom -
• Hong Kong - 32.0
• Taiwan -

Spain

• Orange ES - 57.0
• DIGI ES - 54.8.4
• Vodafone ES - 54.8.8
• Movistar -

Sweden

• Comviq -
• Tre - 31.0

Switzerland

• Salt - 57.0
• Sunrise - 57.0
• Swisscom - 57.0

Turkey

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

United Kingdom

• EE - 55.0
• BT-UK (EE MVNO)- 50.0.1
• Three - 56.0
• iD Mobile (Three MVNO) - 57
• O2-UK - 50.0
• Giffgaff (O2 MVNO) - 41.0
• Sky (O2 MVNO) - 55.0
• Vodafone UK - 56.0
• Virgin Mobile (EE MVNO) - 39.5
• Lebara (Vodafone MVNO) - 56.0

United States

• AT&T - 57.0.1
• Boost - 57.0
• Cricket - 40.5.2
• FirstNet - 55.0
• FirstNet (iPad) - 41.7.6
• Metro (TMO MVNO) - 57.0
• Spectrum (VZW MVNO) - 57.0
• T-Mobile - 57.0
• TracFone/Straight Talk/Walmart Family Mobile - 57.0
• U.S. Cellular - 46.7.24
• Ultra/Mint Mobile (TMO MVNO) - 57.0
• Verizon - 57.0
• Verizon (iPad) - 41.0
• Visible (VZW MVNO) - 51.0.1
• Xfinity Mobile - 52.0

Finland

• DNA - 52.7

Other

• Docomo - 32.5.10
• AlwaysOnline -

Historical beta release chart

iOS Version History Chart

iOS version history chart

www.thinkybits.com

 

[mariuskv]

Wonder what is fixed

 

[muntundombe]

Gracias @Banglazed

I wish you anticipatively a Merry Xmas and a HappyNew Year 🎄

 

[gwang73]

IPSW already available on the dev site.

 

[Banglazed]

Build is only for iPhone. Not seeing for iPad

 

[TooMuchPhone]

WiFi seems better; keyboard has less lag. (15 PM)

 

[Sharkoneau]

I was experiencing issues with password autofill and Shazam integration not recognizing any songs on 17.2. Hopefully this update solves those problems!

 

[gwang73]

Stuck syncing not fixed with iOS 17.2.1 and MacOS 14.2.1 😪

 

[addamas]

After updating 11Pro to 17.2.1 SpO2 sensor on S8 still works 😅

 

[TheByteSmasher]

Stuck syncing not fixed with iOS 17.2.1 and MacOS 14.2.1 😪

I changed my cable out and that fixed it for me🤷🏻‍♂️
Another note: I have noticed the screen is not as responsive on 17.2 (13pro) maybe this fixes it.
Also, iTunes for windows has an update

 

[TheByteSmasher]

OK, tried syncing again with the new cable… no dice. Updated and tried again and it was the fastest sync ever🤷🏻‍♂️

 

[Hans300]

Is this version any good, or still typical bugfest ?

 

[dk001]

Is this version any good, or still typical bugfest ?

Bugfest. See below.

 

[dk001]

AWU on 10.2
iPad Pro 11 on 17.2
15 Pro Max on 17.2.1

Now that my 15PM has been updated, I am getting no Messages on my AWU or iPad. Still come through on the 15PM and even though the AWU is set to mirror the 15PM and all texts on the 15PM are forwarded, nada. I did till the 17.2.1 update.

Hard reboots no help.
grrrrr……..

 

[Fontvnilla]

I’ve never seen this happen before.

 

[Kyriakosss4]

I was experiencing issues with password autofill and Shazam integration not recognizing any songs on 17.2. Hopefully this update solves those problems!

Password autofill can be fixed , I’ve posted a solution on Reddit, I can find it if you are interested

 

[Maloney~888]

Password autofill can be fixed , I’ve posted a solution on Reddit, I can find it if you are interested

Yes please👍🏻

 

[Sharkoneau]

Password autofill can be fixed , I’ve posted a solution on Reddit, I can find it if you are interested

That’d be great if you could—thanks

 

[ibookemo]

17.2.1 working fine on both my 15 Pro Max and 13 Mini. No idea what the changes are though - I don't see any changes from the previous release.

 

[drumcat]

Have to expect this was a zero-day… or something insisted by the lawyers.

 

[krspkbl]

updated my 15 PM. Face ID seems to be working so far. imessage is working again.

 

[Reverend Benny]

17.2.1 working fine on both my 15 Pro Max and 13 Mini. No idea what the changes are though - I don't see any changes from the previous release.

Prob "under the hood" changes. Since they are pushing it out fairly quick one can only speculate.
But who knows, maybe a security flaw not yet reported, critical bug or something else.

 

[Reverend Benny]

Is this version any good, or still typical bugfest ?

Seem to be fine, been using it since this morning and currently have around 65 users at work piloting it before I push it out to everyone. No complaints so far. Only thing I've heard are users on 17.1.2 or 17.2 complaining that iMessage don't appear on their iPads and iPhones at the same time, seem to be some synk issue.
Not sure if this has been solved in 17.2.1.

 

[Reverend Benny]

updated my 15 PM. Face ID seems to be working so far. imessage is working again.

What iMessage problems did you have?

 

[dk001]

AWU on 10.2
iPad Pro 11 on 17.2
15 Pro Max on 17.2.1

Now that my 15PM has been updated, I am getting no Messages on my AWU or iPad. Still come through on the 15PM and even though the AWU is set to mirror the 15PM and all texts on the 15PM are forwarded, nada. I did till the 17.2.1 update.

Hard reboots no help.
grrrrr……..

Update: I am now getting Messages on my AW (mirroring 15PM) this morning. No clue why it just started. No clue why it stopped. Forwarding of messages from my 15PM to my iPad Pro still isn’t working.