Google releases monthly security patch and updates the Android OS repository. Under the AOSP project, the sources are continuously updated with new Android versions and new features as well. Just a couple of months ago, the company released Android 8.0.0 Oreo with August 2017 security patch. Later, September patched a Bluetooth vulnerability called the BlueBorne patch. Now, Google released the October 2017 Security Patch for all of its supported Android devices. Download the latest factory images and OTA updates from Google’s official repository.

The October security patch brings several vulnerability bug fixes. Later, many manufacturers implemented the same for their device. You can see vulnerability fixes for Android systems ranging from version 4.0 to 8.0. Also, some patches to specific components like Qualcomm & MediaTek SoC, some Kernel components and much more. You can see all the update log at the October 2017 security bulletin page.

The Nexus 6P comes with firmware build number OPR5.170623.007, the 5X with OPR4.170623.009, Google Pixel (XL) with versions OPR3.170623.008. The Nexus 6, Nexus 9 are also receiving the October 2017 Security Patch with build number N6F27M. Unfortunately the older Nexus phone won’t receive Android 8.0.0 Oreo update. This includes the Nexus 5, 6, 9 (LTE and WiFi). However, you will still find the latest available factory images and OTA updates.

Download October 2017 Security Patch factory images and OTA updates

Project Fi and Canada variant of Pixel and Pixel XL models have different versions. Also, there are two different Nexus 6 factory images.

Following are direct download links. Get the correct file for your phone.

Full downloads repository

See: How to install factory images and OTA updates on Nexus and Pixel?

Android distribution numbers:

According to the October 2017 Android Distribution Numbers, Google recorded Android 8.0 Oreo at 0.2% and 17.8% on Nougat. Android is already advancing towards Oreo. With many Oreo based custom ROMS like Lineage OS 15 and AOSP Oreo ROM, the number is only going to increase.

Version Codename API Distribution
2.3.3 –
2.3.7
Gingerbread 10 0.6%
4.0.3 –
4.0.4
Ice Cream Sandwich 15 0.6%
4.1.x Jelly Bean 16 2.3%
4.2.x 17 3.3%
4.3 18 1.0%
4.4 KitKat 19 14.5%
5.0 Lollipop 21 6.7%
5.1 22 21.0%
6.0 Marshmallow 23 32.0%
7.0 Nougat 24 15.8%
7.1 25 2.0%
8.0 Oreo 26 0.2%

Data collected during a 7-day period ending on October 2, 2017.