Recent OxygenOS 15 updates, versions .850 and .860, for OnePlus 11, OnePlus 12, and OnePlus 13 devices are causing a severe soft-brick issue after a factory reset, particularly for users with locked bootloaders.

• Affected devices include the entire OnePlus 11, 12, and 13 series after updating to OxygenOS 15 build .850 (August 2025) or .860 (September 2025).
• The problem manifests as devices getting stuck at the Google account setup stage after a factory reset, rendering the phone unusable.
• Users with locked bootloaders have limited recovery options, often requiring EDL (Emergency Download Mode) flashing or a service center visit; those with unlocked bootloaders may use fastboot commands.
• OnePlus advises users to avoid factory resets on these builds and, if necessary, to manually remove all Google accounts and disable screen lock security prior to resetting.