值得注意的是，工信部门9月10日曾预警iOS 18.6.2存在越界写入高危漏洞，该漏洞已被用于网络攻击。 苹果表示此举旨在推动用户使用修复漏洞的新版本。虽然用户可自主选择继续使用iOS 18系列，但升级 至iOS 26后将失去降级选项，专家建议用户升级前做好数据备份，权衡新功能与系统兼容性需求。 苹果于8月21日推送iOS18.6.2维护性更新，聚焦系统稳定性优化。而iOS 26正式版于9月16日发布，采用 全新"Liquid Glass"设计语言，是苹果首次统一全平台版本号的系统革新。此次停止旧版本签名延续了 苹果惯例——在新安全更新发布后终止旧版本支持。 9月23日晚间，有媒体爆料称，苹果已正式停止对iOS 18.6.2及更早版本的签名验证，同步停止签署的还 包括iPadOS 18.6.2和tvOS 18.6。这意味着用户设备一旦升级至iOS 26系统，将无法通过恢复模式降级回 iOS 18系列版本。 ...

Core Viewpoint - Apple has officially stopped signing verification for iOS 18.6.1 and earlier versions, preventing users from downgrading to previous system versions after upgrading to iOS 18.6.2 [1] Group 1: System Update Policy - Users who have upgraded to iOS 18.6.2 cannot restore to older firmware through iTunes or Finder due to the closure of the system verification channel [1] - Even attempts to downgrade using third-party tools will fail as devices cannot be activated without verification from Apple servers [1] Group 2: Controversy and Comparison - Apple's forced update strategy has sparked controversy, with supporters arguing it enhances overall security and reduces risks from malware, while critics claim it limits user choice, particularly affecting developers and users with specific needs [1] - In contrast to Apple, Google allows users to downgrade to custom ROMs despite also pushing security updates through mechanisms like Project Mainline, highlighting a fundamental difference in security philosophy and user freedom between the two mobile operating systems [1]

Core Viewpoint - Apple has urgently released iOS 18.6.2 update to address a critical security vulnerability affecting various devices, highlighting the increasing concern over electronic device security in the digital age [1][4] Group 1: Security Vulnerability - The vulnerability affects iPhone XS and later models, multiple iPad Pro, iPad Air, iPad, and iPad mini devices [4] - The issue arises from processing malicious image files, which can lead to memory corruption and allow hackers to execute attacks [4] Group 2: Software Updates - In addition to iOS 18.6.2, Apple has also released updates for iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, and macOS Ventura 13.7.8, all aimed at fixing the ImageIO vulnerability [4] - Apple recommends users to update their devices immediately due to the active exploitation of this vulnerability in the wild [4]

Product Update - A new iPhone update, iOS 18.6.2, is reportedly coming soon [1]

Product Updates - A new iPhone update, iOS 18.6.2, is reportedly coming soon [1]