Firmware portal
Integrity
SHA-256 hashes for current archive packages.
2b1f84f6a2a554140fc661b16217b72be0949db4b2b0de065a27dee48044258e16deb1a9a48a5d479bf8ec190dff16c46143a3a58791bd667f03351465f5b035No hashes match this search.
OnePlus 15 · Chinese hardware
If you have a Chinese OnePlus 15 that was converted to OxygenOS and the bootloader was locked again, I strongly recommend restoring bootloader/Fastboot access now while the free method is still available.
You do not need to unlock the bootloader afterward. The important part is restoring access to the real bootloader/Fastboot mode.
If your device is affected, do this sooner rather than later.
Huge thanks to mikoker for discovering this method.