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| |Type=Firmware lockout | | |Type=Firmware lockout |
| |Description=oneplus phone update introduces hardware anti-rollback | | |Description=oneplus phone update introduces hardware anti-rollback |
| }}<ref>{{Cite web |last=Leon |first=Jean |date=2026-01-21 |title=Beware: This OnePlus Change Could Permanently Brick Your Phone |url=https://www.androidheadlines.com/2026/01/oneplus-anti-rollback-software-change-brick-phone.html |url-status=live |access-date=2026-01-22 |website=Android Headlines}}</ref><ref>{{Cite web |last=Sharma |first=Adamya |date=2026-01-19 |title=OnePlus just made bootloader unlocking riskier than ever |url=https://www.androidauthority.com/oneplus-arb-protection-3633783/ |url-status=live |access-date=2026-01-22 |website=Android Authority}}</ref><ref>{{Cite web |last=Schoon |first=Ben |date=2026-01-20 |title=OnePlus adds anti-rollback that could brick your phone |url=https://9to5google.com/2026/01/20/oneplus-update-starts-bricking-phones-when-you-try-to-install-older-software/ |url-status=live |access-date=2026-01-22 |website=9to5Google}}</ref><ref>{{Cite web |last=Shanto |first=Abid Ahsan |date=2026-01-20 |title=New OnePlus software updates add Samsung-style ARB with permanent bricking risk |url=https://www.notebookcheck.net/New-OnePlus-software-updates-add-Samsung-style-ARB-with-permanent-bricking-risk.1208015.0.html |url-status=live |access-date=2026-01-20 |website=NotebookCheck.net}}</ref><ref>{{Cite web |last=AdaUnlocked |date=2026-01-18 |title=General - [CRITICAL WARNING] ColorOS 16.0.3.501 Updates = PERMANENT Anti-Rollback (ARB) & Fuse Blown. DO NOT DOWNGRADE! |url=https://xdaforums.com/t/critical-warning-coloros-16-0-3-501-updates-permanent-anti-rollback-arb-fuse-blown-do-not-downgrade.4775930/ |url-status=live |access-date=2026-01-22 |website=XDA Forums}}</ref>{{Ph-I-Int}} | | }}On 18 January 2026, AdaUnlocked, a user on the XDA Forums, reported that the ColorOS 16.0.3.501 update introduces a hardware-level Anti-Rollback (ARB) mechanism for OnePlus 13/13T and 15 smartphones. Updating to the version causes the anti-rollback fuse to be blown which leads to permanent bricking of the device if any older ROM (custom or not) is flashed to it. <ref>{{Cite web |last=AdaUnlocked |date=2026-01-18 |title=General - [CRITICAL WARNING] ColorOS 16.0.3.501 Updates = PERMANENT Anti-Rollback (ARB) & Fuse Blown. DO NOT DOWNGRADE! |url=https://xdaforums.com/t/critical-warning-coloros-16-0-3-501-updates-permanent-anti-rollback-arb-fuse-blown-do-not-downgrade.4775930/ |url-status=live |access-date=2026-01-22 |website=XDA Forums}}</ref> |
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| ==Background== | | ==Background== |
| {{Ph-I-B}} | | {{Ph-I-B}} |