Key Constraints (Firmware-Specific)

FW ≥ 5.12.x

• OTA blocking via conventional methods (rename OTA binaries) is no longer sufficient
• More aggressive anti-JB measures
• ;log search bar commands may be removed

FW ≥ 5.15.1.1

• Breaking change introduced (NiLuJe: “DO NOT UPDATE”)
• Hotfix/bridge behavior changed

FW 5.18.1+

• WinterBreak patched (.active_content_sandbox hardened)
• AdBreak required (ad-supported only, CVE-2012-3748)