The incremental OTA update starts rolling out to OnePlus 3 and OnePlus 3T. The update weighs around 95MB and it will take a few days to reach on all devices. If you cannot wait for the OTA, you can also download and install the OxygenOS 5.0.4 stable update manually.

Below is what is new in this update, download link and manual installation instruction. If you would like to install the OxygenOS 5.0.4 stable update manually on your OnePlus 3 and OnePlus 3T, then download the full ROM update file from here (link will be updated soon). Installation Guide:

  1. Save the downloaded ROM zip file on your phone
  2. Switch off the phone, press Power + Volume Down buttons together to boot into Recovery mode.
  3. Choose “Install from internal storage/Install from local“, find your .zip file and tap on “Install” to confirm.
  4. Once the process completes, your phone will reboot automatically into new OxygenOS. If you have replaced the stock recovery with TWRP, then to install this update, boot your phone into TWRP, select “Install” > select the ROM zip file > swipe to flash and then reboot your device. If you are on a custom ROM, then a clean flash is necessary. (source)