The OxygenOS 4.5.13 OTA (over the air) update just weighs 39MB in size and includes September 2017 security patches, improvements in various areas of the system and general bug fixes. Below are the full change logs of OxygenOS 4.5.13 update for OnePlus 5.

OxygenOS 4.5.13 Changelog: If you have already updated to OxygenOS 4.5.12, you will receive the OxygenOS 4.5.13 OTA update shortly. If you have not received the update yet, check it by going to Settings > System Updates > Check for OTA updates. Note that as the OTA update is rolling out in phases it will take few days to get on all devices. Alternatively, you can download and install OxygenOS 4.5.13 (OTA or full ROM) manually. If you have not received the OTA notification, you can download (OTA or full firmware) and install the update manually. Check out the guide below.

How to install OxygenOS 4.5.13 Update Manually on OnePlus 5

  1. Download OxygenOS 4.5.13 full ROM from here to your PC.
  2. Follow this guide to know how to flash full firmware manually on OnePlus 5. (Source – OnePlus)