Oneplus phone update introduces hardware anti-rollback: Difference between revisions
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The OnePlus ColorOS 16.0.3.501 Anti-Rollback Fuse Incident refers to the January 2026 deployment of firmware updates by [[OnePlus]] that introduced a hardware-level anti-rollback mechanism. This permanently prevents users from downgrading their devices or installing custom ROMs. The updates, which affected the OnePlus 13, OnePlus 13T, and OnePlus 15, irreversibly blow electronic fuses inside the device's [[Qualcomm]] processor. Any subsequent attempt to install older firmware results in a permanent "hard brick" - the device becomes unusable. This cannot be repaired through standard methods.<ref name="xda-warning">{{cite web |url=https://xdaforums.com/t/critical-warning-coloros-16-0-3-501-updates-permanent-anti-rollback-arb-fuse-blown-do-not-downgrade.4775930/ |title=[CRITICAL WARNING] ColorOS 16.0.3.501 Updates = PERMANENT Anti-Rollback (ARB) & Fuse Blown. DO NOT DOWNGRADE! |website=XDA Forums |date=January 19, 2026 |access-date=January 22, 2026 |archive-url=http://web.archive.org/web/20260126173832/https://xdaforums.com/t/critical-warning-coloros-16-0-3-501-updates-permanent-anti-rollback-arb-fuse-blown-do-not-downgrade.4775930/ |archive-date=26 Jan 2026}}</ref> | The OnePlus ColorOS 16.0.3.501 Anti-Rollback Fuse Incident refers to the January 2026 deployment of firmware updates by [[OnePlus]] that introduced a hardware-level anti-rollback mechanism. This permanently prevents users from downgrading their devices or installing [[wikipedia:List_of_custom_Android_distributions|custom ROMs]]. The updates, which affected the OnePlus 13, OnePlus 13T, and OnePlus 15, irreversibly blow electronic fuses inside the device's [[Qualcomm]] processor. Any subsequent attempt to install older firmware results in a permanent "hard brick" - the device becomes unusable. This cannot be repaired through standard methods.<ref name="xda-warning">{{cite web |url=https://xdaforums.com/t/critical-warning-coloros-16-0-3-501-updates-permanent-anti-rollback-arb-fuse-blown-do-not-downgrade.4775930/ |title=[CRITICAL WARNING] ColorOS 16.0.3.501 Updates = PERMANENT Anti-Rollback (ARB) & Fuse Blown. DO NOT DOWNGRADE! |website=XDA Forums |date=January 19, 2026 |access-date=January 22, 2026 |archive-url=http://web.archive.org/web/20260126173832/https://xdaforums.com/t/critical-warning-coloros-16-0-3-501-updates-permanent-anti-rollback-arb-fuse-blown-do-not-downgrade.4775930/ |archive-date=26 Jan 2026}}</ref> | ||
OnePlus has not issued any official statement addressing the mechanism.<ref name="android-authority">{{cite web |url=https://www.androidauthority.com/oneplus-arb-protection-3633783/ |title=New OnePlus updates can permanently lock your phone's software future |author=Adamya Sharma |website=Android Authority |date=January 19, 2026 |access-date=January 22, 2026 |archive-url=http://web.archive.org/web/20260127150054/https://www.androidauthority.com/oneplus-arb-protection-3633783/ |archive-date=27 Jan 2026}}</ref> | OnePlus has not issued any official statement addressing the mechanism.<ref name="android-authority">{{cite web |url=https://www.androidauthority.com/oneplus-arb-protection-3633783/ |title=New OnePlus updates can permanently lock your phone's software future |author=Adamya Sharma |website=Android Authority |date=January 19, 2026 |access-date=January 22, 2026 |archive-url=http://web.archive.org/web/20260127150054/https://www.androidauthority.com/oneplus-arb-protection-3633783/ |archive-date=27 Jan 2026}}</ref> | ||
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==Background== | ==Background== | ||
OnePlus was founded on December 16, 2013, by Pete Lau and Carl Pei, both former OPPO executives, with OPPO Electronics as the primary investor. The company's first device, the OnePlus One, shipped with [[wikipedia:CyanogenMod|CyanogenMod]], a commercial variant of the popular custom ROM, through an exclusive licensing agreement with Cyanogen Inc.This partnership positioned OnePlus as a choice for modding enthusiasts. | OnePlus was founded on December 16, 2013, by Pete Lau and Carl Pei, both former OPPO executives, with OPPO Electronics as the primary investor. The company's first device, the OnePlus One, shipped with [[wikipedia:CyanogenMod|CyanogenMod]], a commercial variant of the popular custom ROM, through an exclusive licensing agreement with Cyanogen Inc. This partnership positioned OnePlus as a choice for modding enthusiasts. | ||
When that partnership collapsed due to Cyanogen's exclusivity deal with Micromax in India, OnePlus developed OxygenOS for global markets and HydrogenOS for China. In July 2021, OnePlus merged OxygenOS with OPPO's ColorOS, sharing a common codebase while maintaining separate branding for different regions. | When that partnership collapsed due to Cyanogen's exclusivity deal with Micromax in India, OnePlus developed OxygenOS for global markets and HydrogenOS for China. In July 2021, OnePlus merged OxygenOS with OPPO's ColorOS, sharing a common codebase while maintaining separate branding for different regions. | ||
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The following devices and firmware versions have been confirmed to trigger the anti-rollback fuse: | The following devices and firmware versions have been confirmed to trigger the anti-rollback fuse: | ||
*OnePlus 13 / 13T: ColorOS 16.0.3.501<ref name="xda-warning" /> | *OnePlus 13 / 13T: ColorOS 16.0.3.501 / OxygenOS 16.0.3.501<ref name="xda-warning" /> | ||
*OnePlus 15: ColorOS 16.0.3.503<ref name="xda-warning" /> | *OnePlus 15: ColorOS 16.0.3.503<ref name="xda-warning" /> | ||
*OnePlus Nord CE 3: OOS 15.0.0.1301 | *OnePlus Nord CE 3: OOS 15.0.0.1301 | ||