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The latest software update for the unlocked versions of Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra comes with firmware version G991U1UES9EWI1 in the US. The update brings the September 2023 security patch and nothing else, so don't expect to see any new features or a performance uplift. The new security patch fixes over 60 security vulnerabilities, as reported by Samsung.
If you have an unlocked version of a Galaxy S21 series phone and you live in the US, you can now check for the new update. To do that, navigate to Settings » Software update and tap Download and install. You can also download the new firmware file from our firmware database and flash it manually.
Samsung launched the Galaxy S21 series two years ago with Android 11 onboard. The phones in the lineup received the Android 12 update in late 2021 and the Android 13 update in late 2022. The devices have already received the Android 14-based One UI 6.0 beta update in some countries, and the stable update might arrive in a couple of months.
Asif is a computer engineer turned technology journalist. He has been using Samsung phones since 2004, and his current smartphone is the Galaxy S21 Ultra. He loves headphones, mechanical keyboards, and PC hardware. When not writing about technology, he likes watching crime and science fiction movies and TV shows.
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