Troubleshooting Guide: Resolving Siri Downgrades and Activating Next-Gen Siri AI on iOS Problem Overview The device was trapped in an issue where Siri repeatedly downgraded to the legacy interface (first-gen floating sphere) instead of activating the next-generation glowing-edge interface or the full Siri AI experience. The primary root causes identified were: Network Layer Timeouts & Resets: The AnyTLS node backend drops UDP/QUIC traffic, causing iCloud authentication gateways (gateway.icloud.com) to fail into an infinite retry loop when running on UDP mode. Traffic Leakage via Fallback Rules: Core network probes and model validation endpoints (probe.icloud.com, gdmf-ados.apple.com, pXX-acsegateway.icloud.com, and iphone-ld.apple.com) bypassed proxy rules and matched domestic DIRECT rules, causing Apple servers to detect a mainland IP and suspend Apple Intelligence models. Configuration & Asset Deadlock: The system voice was mismatched (British instead of American), and the local Generative Model assets remained unmounted due to missing user authorization under Try Siri AI (Beta). Step-by-Step Resolution Proxy Node Protocol Optimization (Shadowrocket) Enforce TCP Transmission: Switch the node transport protocol strictly from UDP to TCP. Keep TLS Active: Retain TLS encryption to ensure seamless end-to-end handshakes with remote proxies while circumventing BLOCK-QUIC dropped packets. 2. Bulletproof Routing Rules Configuration Add the following high-priority keyword rules and drag them to the very top of the Shadowrocket routing table to prevent broader fallback rules (apple.com,DIRECT or GEOIP,CN,DIRECT) from hijacking them: DOMAIN-KEYWORD,gateway,PROXY — Routes all partition and root iCloud gateways (gateway.icloud.com, pXX-acsegateway.icloud.com). DOMAIN-KEYWORD,probe,PROXY — Blocks local network location probes (probe.icloud.com) from leaking actual physical IP addresses. DOMAIN-KEYWORD,gdmf,PROXY — Covers both firmware signing and offline model asset authorization (gdmf.apple.com, gdmf-ados.apple.com). DOMAIN-KEYWORD,guzzoni,PROXY — Covers primary voice processing and cloud comprehension endpoints. DOMAIN-SUFFIX,iphone-ld.apple.com,PROXY — Proxies Apple's locale and device determination server. 3. iOS System Environment & Siri AI Activation System Alignment: Set Language to English (United States) and Region to United States. Voice Model Uniformity: In Settings > Siri, change Voice to American (e.g., Voice 4) to prevent asset loading stalls caused by regional language/voice discrepancies. Enable New Architecture: Tap Try Siri AI (Beta) and confirm authorization, prompting the system to transition to the new interaction pipeline. Remove Unintended Locks: Disable "Require Face ID" on the standalone Siri application icon to enable instant opening without biometric friction. 4. Model Asset Compilation & Cache Flashing Force Asset Refresh: Delete and re-download English (US) within the built-in Translate app to clear corrupted MobileAsset download queues. Finalize ANE Deployment: Connect the iPhone to power, lock the screen, and leave it idle on Wi-Fi for 10–15 minutes. This provides the powerd and triald background daemons with the necessary low-power state to unpack and load generative model weights into the Apple Neural Engine (ANE). Result & Current Status Split-Tunneling Verified: Domestic Chinese apps (WeChat, Alipay, Meituan, Xiaohongshu) connect directly without proxy overhead or latency degradation. Apple Intelligence Active: Double-tapping the Home Bar brings up the "Type to Siri" card, and invoking Siri triggers full-screen glowing edges without errors or fallbacks.

I have been experiencing an ongoing Siri / Apple Intelligence issue since the iOS 27 beta versions. The problem has continued through multiple beta releases and still remains unresolved even after updating to the official release of iOS 27. My current language configuration is: iPhone system language: English (US) Siri language: English (US) Both are set to the same US English language environment. The main symptoms are as follows: In Settings, Siri / Apple Intelligence remains stuck on: “Adding support for Siri is in progress” This status can remain for a very long time and never completes normally. When the iPhone is connected to a charger, Siri / Apple Intelligence sometimes appears to have completed downloading, and Siri may temporarily become available. However, once I disconnect the charger, the system may immediately return to a state where additional Siri resources need to be downloaded, or Siri becomes unavailable again. This is one of the most consistent and unusual symptoms of the issue. When using cellular data, the system may say that Wi-Fi is required to continue downloading Siri resources. However, after connecting to Wi-Fi, it simply returns to: “Adding support for Siri is in progress” and never actually finishes. The Siri app may directly display: “Siri is not available” I have also tried switching between different Siri modes. Even when using the older Siri experience, the system may still continue showing: “Adding support for Siri is in progress” The newer Siri interface is also available on the device, but the required resources or models never appear to complete activation properly. Apple Intelligence storage usage has also behaved abnormally. At one point, iPhone Storage showed approximately 7.37 GB being used by Apple Intelligence. Later, the Apple Intelligence storage entry disappeared completely and the occupied storage space decreased. After changing language settings again, the approximately 7.37 GB Apple Intelligence storage usage reappeared. This makes it appear that the Siri / Apple Intelligence local assets may be repeatedly downloaded, removed, invalidated, or not correctly recognized by the system after downloading. I have already tried extensive troubleshooting, including: Different Wi-Fi networks Cellular data Disabling VPN and proxy services Changing system language Changing Siri language Setting both system language and Siri language to English (US) Removing previously used additional languages Restarting the iPhone Resetting All Settings Updating iOS through Recovery Mode Updating through multiple iOS 27 beta versions Updating from iOS 27 beta to the official iOS 27 release Leaving the iPhone connected to Wi-Fi and power for extended periods None of these steps has provided a permanent solution. Sometimes Siri suddenly starts working again without any clear reason, but the issue later returns. Because of this, I do not consider the temporary recovery to be a real fix. The most important behavior is: When the iPhone is connected to power, Siri / Apple Intelligence may appear to be fully downloaded or temporarily functional. After disconnecting the charger, the system may again report that Siri resources still need to be downloaded, or Siri becomes unavailable. This issue started during the iOS 27 beta period and has continued all the way to the official release of iOS 27. Normal software updates have not resolved it. Based on the behavior, I suspect this may not simply be a network download failure. It may involve the local Siri / Apple Intelligence asset state, asset verification, background asset download services, or device-side activation/configuration. I would like Apple to confirm the following: Is this a known issue in iOS 27? Is there an existing internal bug report or Feedback ID related to this behavior? Has this issue been addressed in iOS 27.1, iOS 27.2, or any later build? Is there a supported solution that does not require erasing the entire iPhone or performing a full factory reset? Is there any way to force the device to completely re-download, re-register, or revalidate the Siri / Apple Intelligence assets and local models? I would strongly prefer not to erase the iPhone because the device contains a large amount of data, applications, account configurations, eSIM settings, and other information that is currently working normally. This issue has existed since the iOS 27 beta versions and remains unresolved on the official iOS 27 release despite extensive troubleshooting. I would appreciate it if this issue could be escalated to the appropriate engineering team for further investigation.

Additional context: This does not appear to be an issuer-specific provisioning problem. The same device previously provisioned Apple Pay cards normally on iOS 26, and the failure has now been reproduced through both first-party Wallet provisioning and issuer-app initiated provisioning. I have also tested different network conditions and previously reset network settings without changing the behavior. The consistent symptom is that provisioning reaches the stage immediately before the Terms & Conditions UI should be presented, but that UI never successfully appears. In the Beta 7 sysdiagnose, SESUIServiceApp is launched during the failed provisioning attempt, but is later observed in a suspended/background state while the expected Secure Element storage-management UI has not been presented. This makes me suspect that the failure is not simply an issuer decline, but may involve the system presentation/lifecycle path used by SESUIServiceApp / SEStorageManagementSheet. If possible, could DTS please compare the Beta 6 and Beta 7 diagnostics attached to FB24403156 and confirm whether this Feedback has been routed to the Wallet / Apple Pay / Secure Element engineering team? I am happy to capture an additional sysdiagnose or reproduce the issue again if engineering needs a specific timestamp or additional diagnostic information.

Update — iOS 27 Beta 7 (24A5424a) This issue is still reproducible after updating to iOS 27 Beta 7. I reproduced the failure again with multiple issuers. East West Bank eventually displays an error without ever presenting the Terms & Conditions screen, while Mercury fails to present the Terms & Conditions screen and does not display a final error at all. A new Beta 7 sysdiagnose has been captured and added to FB24403156. Could an Apple DTS engineer please help review or route FB24403156 to the appropriate Wallet / Apple Pay / Secure Element engineering team? The issue has now reproduced consistently across both Beta 6 and Beta 7.