OnePlus 5 owners can now download and flash the ZIP file for OxygenOS Open Beta 3, which will get them the same face unlock functionality found on the OnePlus 5T, along with a few small tweaks and fixes. On top of being able to unlock their device just by looking at it, OnePlus 5 users can now find a shortcut to the phone's Recorder function in the default launcher. As far as fixes, there are some general fix-ups here and there, along with a specific fix pertaining to issues that some users were reporting with 5GHz Wi-Fi connections. Finally, the new update moves devices up to the December 1, 2017 Android Security Bulletin.
As with any other OxygenOS update, this one can be flashed without issue via Oxygen Recovery or TWRP. The update does not come rooted by default, so root users may want to make sure to flash their root solution of choice after the update ZIP file, just in case. Updating from OxygenOS Open Beta 2 without a data wipe should be no problem, but coming from an older version, a custom ROM, or Hydrogen OS may cause some issues unless you're willing to do a full data wipe before flashing. Likewise, as with flashing any ZIP to your device, it's highly recommended to take a full backup first. After all, even if you follow all the instructions, there's always the possibility that something could go wrong. This is especially true of such a large update, this one weighs in at 1.58GB.
The previous update came out in mid-December, and didn't really add any meaningful features, opting instead to address various bugs and make small tweaks. OxygenOS Open Beta 1 marked the phone's update to Android 8.0 Oreo on the OxygenOS channel, and brought more than a few bugs with it to complement all of the new features and UI redesigns. This latest update brings the OnePlus 5 essentially into feature parity with its newer sibling, the OnePlus 5T, aside from a few small changes made to accommodate the larger screen on the newer phone. The hardware differences may be compelling for some, but this update, and doubtlessly future ones, give OnePlus 5 owners progressively less reason to trade up to the later model.