Following the release of the iOS 4.1 firmware, Apple has seeded the iOS 4.1 SDK to developers.
The build number of the SDK is 10M2309 and it is available for download from the iOS Dev Center.
Get It

The build number of the SDK is 10M2309 and it is available for download from the iOS Dev Center.
Get It


![Apple Could Turn Siri AI Into an Autonomous Agent in 2027 [Gurman] Apple Could Turn Siri AI Into an Autonomous Agent in 2027 [Gurman]](/images/news/103362/103362/103362-160.jpg)


![Apple Gives iOS 28 Engineers More Time to Build New Features [Report] Apple Gives iOS 28 Engineers More Time to Build New Features [Report]](/images/news/103356/103356/103356-160.jpg)

![How To Back Up Your iPhone to an External Drive on Mac [Video] How To Back Up Your iPhone to an External Drive on Mac [Video]](/images/tutorials/72786/72786/72786-160.jpg)
![How To Sideload Apps Onto Your iPhone Using Xcode [Video] How To Sideload Apps Onto Your iPhone Using Xcode [Video]](/images/tutorials/52314/52314/52314-160.jpg)
![How To Find Your IP Address on iPhone [Video] How To Find Your IP Address on iPhone [Video]](/images/tutorials/496/496/496-160.jpg)



![Mac mini and Mac Studio Hit All-Time Lows, Up to $200 Off [Deal] Mac mini and Mac Studio Hit All-Time Lows, Up to $200 Off [Deal]](/images/news/103290/103290/103290-160.jpg)
![M5 MacBook Air Up to $200 Off, 13-Inch From $1,099.99 [Deal] M5 MacBook Air Up to $200 Off, 13-Inch From $1,099.99 [Deal]](/images/news/103233/103233/103233-160.jpg)
![Apple Watch Ultra 4 Drops Back to All-Time Low of $699.99 ($99 Off) [Deal] Apple Watch Ultra 4 Drops Back to All-Time Low of $699.99 ($99 Off) [Deal]](/images/news/103218/103218/103218-160.jpg)
![AirTag 2 4-Pack Hits All-Time Low of $69.99 ($29 Off) [Deal] AirTag 2 4-Pack Hits All-Time Low of $69.99 ($29 Off) [Deal]](/images/news/103203/103203/103203-160.jpg)