Bootloader unlocking: Difference between revisions

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'''Difference from Rooting'''

Rooting a device allows users to bypass restrictions from within the OS, while it is running. Conversely, bootloader unlocking allows rewriting the storage drive where the OS is installed, but does not grant any further abilities after the OS is loaded. Bootloader unlocking does, however, allow users to enable root access, by either manually editing the loaded operating system or using an app to do so automatically.

Rooting a device allows users to bypass restrictions from within the OS, while it is running. Conversely, bootloader unlocking allows rewriting the storage drive where the OS is installed, but does not grant any further abilities after the OS is loaded. Bootloader unlocking does, however, allow users to enable root access, by either manually editing the loaded operating system or using an app to do so automatically.{{Citation needed|date=12 Mar 2026}}

See [[Jailbreak]] for more info.

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==='''Extending device lifespan'''===

Most custom ROMs do not contain [[bloatware]] and can thus be used to extend the longevity of phones that have become unusable due to later updates requiring more performance and storage. Especially on low-end phones, these updates often exhaust the built-in storage after as little as two years.{{Citation needed}} This renders the device slow and unstable, without room for user data. Custom ROMs are typically much smaller than the manufacturer's software.{{Citation needed}} Consequently, many old phones can run even faster with a custom ROM than they did when new, extending their useful lifespan.<ref>{{Cite web |title=By how much do custom roms really extend Phone lifespans? |url=https://www.reddit.com/r/AndroidQuestions/comments/gdq2rc/comment/fpj11ay/ |access-date=2025-08-23 |website=Reddit |archive-url=https://web.archive.org/web/20260223033349/https://old.reddit.com/r/AndroidQuestions/comments/gdq2rc/by_how_much_do_custom_roms_really_extend_phone/fpj11ay/ |archive-date=23 Feb 2026}}</ref><ref>{{Cite web |date=2023-03-10 |title=Xiaomi Redmi 8a - olivelite with Dual Sim |url=https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |url-status=live |access-date=2025-08-23 |website=/e/OS Community |archive-url=http://web.archive.org/web/20250907145946/https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |archive-date=7 Sep 2025}}</ref>

Most custom ROMs do not contain [[bloatware]] and can thus be used to extend the longevity of phones that have become unusable due to later updates requiring more performance and storage. Especially on low-end phones, these updates often exhaust the built-in storage after as little as two years.{{Citation needed}} This renders the device slow and unstable, without room for user data. Custom ROMs are typically much smaller than the manufacturer's software.{{Citation needed}} Consequently, many old phones can run even faster with a custom ROM than they did when new, extending their useful lifespan.{{Citation needed|date=12 Mar 2026|reason=Low verifiability}}<ref>{{Cite web |title=By how much do custom roms really extend Phone lifespans? |url=https://www.reddit.com/r/AndroidQuestions/comments/gdq2rc/comment/fpj11ay/ |access-date=2025-08-23 |website=Reddit |archive-url=https://web.archive.org/web/20260223033349/https://old.reddit.com/r/AndroidQuestions/comments/gdq2rc/by_how_much_do_custom_roms_really_extend_phone/fpj11ay/ |archive-date=23 Feb 2026}}</ref><ref>{{Cite web |date=2023-03-10 |title=Xiaomi Redmi 8a - olivelite with Dual Sim |url=https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |url-status=live |access-date=2025-08-23 |website=/e/OS Community |archive-url=http://web.archive.org/web/20250907145946/https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |archive-date=7 Sep 2025}}</ref>

===='''Updates after the manufacturer abandons the device'''====

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===Security===

A locked bootloader protects the device from an [[wikipedia:Evil_maid_attack|Evil Maid Attack]]. This attack occurs when a person with physical access to a device manipulates the operating system, typically when the device is left unattended or when handed over for inspection by authorities. Locking the bootloader ensures that the operating system remains intact and cannot be altered from the state in which the manufacturer released it.

A locked bootloader protects the device from an [[wikipedia:Evil_maid_attack|Evil Maid Attack]]. This attack occurs when a person with physical access to a device manipulates the operating system, typically when the device is left unattended or when handed over for inspection by authorities. Locking the bootloader ensures that the operating system remains intact and cannot be altered from the state in which the manufacturer released it.{{Citation needed|date=12 Mar 2026}}

===DRM and ecosystem control===

Some devices hold [[Digital_rights_management|DRM]] keys, which are deleted when the bootloader is unlocked. Other devices go so far as to wipe proprietary drivers. <ref>{{Cite web |title=Sony wipes TA/ partition |url=https://github.com/melontini/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1#L23 |url-status=live |website=GitHub |archive-url=https://web.archive.org/web/20260223033412/https://github.com/zenfyrdev/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1 |archive-date=23 Feb 2026}}</ref> This allows manufacturers to force the use of their software and maintain control over devices, preventing unsupported devices from receiving updates, the removal of some apps and services, and the bypassing of other DRM such as the iPhone's component DRM.

Some devices hold [[Digital_rights_management|DRM]] keys, which are deleted when the bootloader is unlocked. Other devices go so far as to wipe proprietary drivers. <ref>{{Cite web |title=Sony wipes TA/ partition |url=https://github.com/melontini/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1#L23 |url-status=live |website=GitHub |archive-url=https://web.archive.org/web/20260223033412/https://github.com/zenfyrdev/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1 |archive-date=23 Feb 2026}}</ref> This allows manufacturers to force the use of their software and maintain control over devices, preventing unsupported devices from receiving updates, the removal of some apps and services, and the bypassing of other DRM such as the iPhone's component DRM.{{Citation needed|date=12 Mar 2026}}

===Locks from mobile carriers===

@@ Line 8: / Line 8: @@
 '''Difference from Rooting'''
-Rooting a device allows users to bypass restrictions from within the OS, while it is running. Conversely, bootloader unlocking allows rewriting the storage drive where the OS is installed, but does not grant any further abilities after the OS is loaded. Bootloader unlocking does, however, allow users to enable root access, by either manually editing the loaded operating system or using an app to do so automatically.
+Rooting a device allows users to bypass restrictions from within the OS, while it is running. Conversely, bootloader unlocking allows rewriting the storage drive where the OS is installed, but does not grant any further abilities after the OS is loaded. Bootloader unlocking does, however, allow users to enable root access, by either manually editing the loaded operating system or using an app to do so automatically.{{Citation needed|date=12 Mar 2026}}
 See [[Jailbreak]] for more info.
@@ Line 29: / Line 29: @@
 ==='''Extending device lifespan'''===
-Most custom ROMs do not contain [[bloatware]] and can thus be used to extend the longevity of phones that have become unusable due to later updates requiring more performance and storage. Especially on low-end phones, these updates often exhaust the built-in storage after as little as two years.{{Citation needed}} This renders the device slow and unstable, without room for user data. Custom ROMs are typically much smaller than the manufacturer's software.{{Citation needed}} Consequently, many old phones can run even faster with a custom ROM than they did when new, extending their useful lifespan.<ref>{{Cite web |title=By how much do custom roms really extend Phone lifespans? |url=https://www.reddit.com/r/AndroidQuestions/comments/gdq2rc/comment/fpj11ay/ |access-date=2025-08-23 |website=Reddit |archive-url=https://web.archive.org/web/20260223033349/https://old.reddit.com/r/AndroidQuestions/comments/gdq2rc/by_how_much_do_custom_roms_really_extend_phone/fpj11ay/ |archive-date=23 Feb 2026}}</ref><ref>{{Cite web |date=2023-03-10 |title=Xiaomi Redmi 8a - olivelite with Dual Sim |url=https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |url-status=live |access-date=2025-08-23 |website=/e/OS Community |archive-url=http://web.archive.org/web/20250907145946/https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |archive-date=7 Sep 2025}}</ref><!-- Please provide better sources than forums and reddits. You can read the citation guide on this wiki for more tips -->
+Most custom ROMs do not contain [[bloatware]] and can thus be used to extend the longevity of phones that have become unusable due to later updates requiring more performance and storage. Especially on low-end phones, these updates often exhaust the built-in storage after as little as two years.{{Citation needed}} This renders the device slow and unstable, without room for user data. Custom ROMs are typically much smaller than the manufacturer's software.{{Citation needed}} Consequently, many old phones can run even faster with a custom ROM than they did when new, extending their useful lifespan.{{Citation needed|date=12 Mar 2026|reason=Low verifiability}}<ref>{{Cite web |title=By how much do custom roms really extend Phone lifespans? |url=https://www.reddit.com/r/AndroidQuestions/comments/gdq2rc/comment/fpj11ay/ |access-date=2025-08-23 |website=Reddit |archive-url=https://web.archive.org/web/20260223033349/https://old.reddit.com/r/AndroidQuestions/comments/gdq2rc/by_how_much_do_custom_roms_really_extend_phone/fpj11ay/ |archive-date=23 Feb 2026}}</ref><ref>{{Cite web |date=2023-03-10 |title=Xiaomi Redmi 8a - olivelite with Dual Sim |url=https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |url-status=live |access-date=2025-08-23 |website=/e/OS Community |archive-url=http://web.archive.org/web/20250907145946/https://community.e.foundation/t/xiaomi-redmi-8a-olivelite-with-dual-sim/29192/12 |archive-date=7 Sep 2025}}</ref><!-- Please provide better sources than forums and reddits. You can read the citation guide on this wiki for more tips -->
 ===='''Updates after the manufacturer abandons the device'''====
@@ Line 38: / Line 38: @@
 ===Security===
-A locked bootloader protects the device from an [[wikipedia:Evil_maid_attack|Evil Maid Attack]]. This attack occurs when a person with physical access to a device manipulates the operating system, typically when the device is left unattended or when handed over for inspection by authorities. Locking the bootloader ensures that the operating system remains intact and cannot be altered from the state in which the manufacturer released it.
+A locked bootloader protects the device from an [[wikipedia:Evil_maid_attack|Evil Maid Attack]]. This attack occurs when a person with physical access to a device manipulates the operating system, typically when the device is left unattended or when handed over for inspection by authorities. Locking the bootloader ensures that the operating system remains intact and cannot be altered from the state in which the manufacturer released it.{{Citation needed|date=12 Mar 2026}}
 ===DRM and ecosystem control===
-Some devices hold [[Digital_rights_management|DRM]] keys, which are deleted when the bootloader is unlocked. Other devices go so far as to wipe proprietary drivers. <ref>{{Cite web |title=Sony wipes TA/ partition |url=https://github.com/melontini/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1#L23 |url-status=live |website=GitHub |archive-url=https://web.archive.org/web/20260223033412/https://github.com/zenfyrdev/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1 |archive-date=23 Feb 2026}}</ref> This allows manufacturers to force the use of their software and maintain control over devices, preventing unsupported devices from receiving updates, the removal of some apps and services, and the bypassing of other DRM such as the iPhone's component DRM.
+Some devices hold [[Digital_rights_management|DRM]] keys, which are deleted when the bootloader is unlocked. Other devices go so far as to wipe proprietary drivers. <ref>{{Cite web |title=Sony wipes TA/ partition |url=https://github.com/melontini/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1#L23 |url-status=live |website=GitHub |archive-url=https://web.archive.org/web/20260223033412/https://github.com/zenfyrdev/bootloader-unlock-wall-of-shame/blob/4ca762b08e77034db2a5ceb78703ac4789349ed0/brands/sony/README.md?plain=1 |archive-date=23 Feb 2026}}</ref> This allows manufacturers to force the use of their software and maintain control over devices, preventing unsupported devices from receiving updates, the removal of some apps and services, and the bypassing of other DRM such as the iPhone's component DRM.{{Citation needed|date=12 Mar 2026}}
 ===Locks from mobile carriers===