September 2021 security patches available for Google Pixel devices

Slightly delayed compared to previous months, thanks to the holiday in the United States (Monday was Labor Day), Google has finally released the September security patches. 10.35 MB to fix the usual bugs present in the previous firmware version, as well as the classic performance optimizations and system stability improvements.

The build is the RQ3A.210905.001 for the global market, while for the latest Pixel 5a it is the RD2A.210905.002 in North America and the RD2A.210905.003 in Japan (i.e. the two countries in which it is marketed). As always happens in these cases, the update is made available in OTA mode: if the notification has not yet been received, we invite you to check its presence manually by accessing the Settings menu of the smartphone. You can check the build number which is mentioned below.

Build numbers:
  • Global:
    • Pixel 3 (XL): RQ3A.210905.001
    • Pixel 3a (XL): RQ3A.210905.001
    • Pixel 4 (XL): RQ3A.210905.001
    • Pixel 4a: RQ3A.210905.001
    • Pixel 4a (5G): RQ3A.210905.001
    • Pixel 5: RQ3A.210905.001
  • North America
    • Pixel 5a: RD2A.210905.002
  • Japan
    • Pixel 5a: RD2A.210905.003

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