Apple: Difference between revisions
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===Operating system downgrades=== | ===Operating system downgrades=== | ||
[[File:Macos startup security.png|alt=macOS startup security screen|thumb|macOS startup security screen]] | [[File:Macos startup security.png|alt=macOS startup security screen|thumb|macOS startup security screen]] | ||
It is not possible to upgrade or downgrade an iPhone, iPad, Apple TV, etc. to an Operating System (OS) version that is no longer signed by Apple. In most cases, only the most recent version is signed. Some exceptions exist, such as certain Apple TV models and Apple Silicon Macs. Downgrading the Apple TV 4K series is not possible at all due to the lack of a USB port. On Macs with a T2 chip, the user can select from three modes of secure boot:<ref>{{Cite web |title=About Startup Security Utility on a Mac with the Apple T2 Security Chip |url=https://support.apple.com/en-us/102522 |url-status=live |archive-url=https://web.archive.org/web/20250607083624/https://support.apple.com/en-us/102522 |archive-date=7 Jun 2025 |access-date=22 Jun 2025 |website=Apple}}</ref> | It is not possible to upgrade or downgrade an iPhone, iPad, Apple TV, etc. to an Operating System (OS) version that is no longer signed by Apple. In most cases, only the most recent version is signed. Some exceptions exist, such as certain Apple TV models and Apple Silicon Macs. Downgrading the Apple TV 4K series is not possible at all due to the lack of a USB port. On Macs with a T2 chip, the user can select from three modes of [[secure boot]]:<ref>{{Cite web |title=About Startup Security Utility on a Mac with the Apple T2 Security Chip |url=https://support.apple.com/en-us/102522 |url-status=live |archive-url=https://web.archive.org/web/20250607083624/https://support.apple.com/en-us/102522 |archive-date=7 Jun 2025 |access-date=22 Jun 2025 |website=Apple}}</ref> | ||
*No Security: Allow any OS to run (same as turning off secure boot on a PC). | *No Security: Allow any OS to run (same as turning off secure boot on a PC). | ||
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While Apple initially opposed the standardization, arguing that it would "stifle innovation rather than encourage it," the company ultimately conceded defeat, with Apple's head of marketing stating "we have no choice" regarding compliance. <ref name=":2" /> | While Apple initially opposed the standardization, arguing that it would "stifle innovation rather than encourage it," the company ultimately conceded defeat, with Apple's head of marketing stating "we have no choice" regarding compliance. <ref name=":2" /> | ||
===European Digital Markets Act | ===European Digital Markets Act=== | ||
This law forced many companies including Apple to change the way they operate to create a fairer competition | {{Main|Digital Markets Act}} | ||
This law forced many companies including Apple to change the way they operate to create a fairer competition. | |||
====Changes Apple introduced iOS and iPadOS to comply with this law:==== | ====Changes Apple introduced iOS and iPadOS to comply with this law:==== | ||
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{{Reflist}} | {{Reflist}} | ||
[[Category:Apple]] | [[Category:Apple| ]] | ||