Обновление iPhone или iPad - Служба поддержки Apple (RU)

: Other third-party alternatives often used for more granular control over device management and backups. Key Considerations Before Proceeding

: The standard tool for Windows and macOS. To use a manually downloaded firmware file, you must hold the Shift key (Windows) or Option/Alt key (Mac) while clicking the "Restore" or "Update" button to select the file.

The safest way to download iPhone firmware is through trusted repositories that link directly to Apple's servers.

: The most popular third-party site. It provides a clean interface to select your device model and view which firmware versions are currently "signed" (meaning Apple still allows them to be installed).