OxygenOS 4.5.6 hot fix update fixes a critical reboot issue on OnePlus 5, so all users are advised to upgrade to this build as quickly as possible. Recently many users are complaining about the reboot issue when trying to call 911 emergency number on OnePlus 5. When calling this number, the phone starts to make the call but then begin to reboot itself. The OxygenOS 4.5.6 update would fix this issue.

If you have not received the OTA notification for the OxygenOS 4.5.6 update on your OnePlus 5, just check it by going to the about device section. However, note that to apply the OTA update, your OnePlus 3 should be running on the previous OxygenOS 4.5.5, 4.5.3 update. If you have not received the update and prefer manual installation, checkout this guide to know how to update your device. Changelog of OxygenOS 4.5.6 update for OnePlus 5: Downloads: OxygenOS 4.5.5 to OxygenOS 4.5.6 OTA for OnePlus 5 [HERE] OxygenOS 4.5.4 to OxygenOS 4.5.6 OTA for OnePlus 5 [HERE] OxygenOS 4.5.3 to OxygenOS 4.5.6 OTA for OnePlus 5 [HERE] OxygenOS 4.5.6 Full ROM [HERE]

How to install OxygenOS 4.5.6 OTA and Full ROM on OnePlus 5

  1. Download OxygenOS 4.5.6 OTA update from above links and follow this guide [HERE] to know how to install the OTA update manually on OnePlus 5.
  2. Download OxygenOS 4.5.6 full ROM from above link and follow this guide [HERE] to know how to flash full ROM on OnePlus 5. (Source – OnePlus)