Samsung Galaxy S21 (SM-G991Q) official device image

Download Samsung Galaxy S21 (SM-G991Q) Firmware (G991QOPU1EYF3/G991QSJP1EYF3/G991QOPU1EYF3)

Brand Samsung
Codename sm-g991q
Version G991QOPU1EYF3/G991QSJP1EYF3/G991QOPU1EYF3
Region SJP
Branch SJP
Advertisement

What's New

One UI 7.0 Upgrade (Android 15)

Bold new look

Visual enhancements
Enjoy a more sophisticated and unique look. One UI 7 introduces a stunning redesign to key components including buttons, menus, notifications and control bars, providing a more consistent visual experience with curves and circles. Beautiful new colors, soft animations, and an innovative blur effect that's unique to One UI make information hierarchy clearer and help you focus on important information.

Reimagined Home screen
Fresh new app icons will look great on your Home screen with new visual metaphors and color schemes that make it easier to recognize the app you need. Widgets have been completely redesigned with more colorful images and more consistent layouts. Folders on your Home screen can also be made larger so you can instantly access apps without opening the folder first.

Simplified Home screen grid
Your Home screen now looks even better than before. A new standard grid layout keeps things symmetrical and makes it easier to use One UI widgets in standard sizes.

Improved Home screen landscape view
Get a more consistent look for your Home screen, even when using your phone horizontally. Widgets now have a similar aspect ratio in landscape view, and text labels appear below icons instead of beside them.

Customize your app and widget style
Make your Home screen look just the way you like it. You can now adjust the size of app icons and choose whether or not to show text labels below app icons and featured widgets. You can also adjust shape, background color, and transparency in the settings for each widget.

Lock screen and Always On Display

Stay on top of important tasks with the Now bar
Check the information you need right now and start essential features without unlocking your phone. Ongoing tasks will appear in the Now bar at the bottom of your Lock screen so you can check key information quickly. Information includes media controls, Stopwatch, Timer, Voice Recorder, Samsung Health, and more.

Make your clock look just the way you like it
Discover a variety of new clock styles for your Lock screen. You can adjust the thickness of lines in the default clock style, or try one of the new animated clocks to match your tastes. You can also resize your clock to any size you like and drag it to your desired position on the Lock screen.

More widgets and shortcuts
You can now see more and do more even when your phone is locked. Add a widget to show pictures and stories from your Gallery, or try a shortcut that opens the QR code scanner with a quick swipe.

Quick panel and notifications

Separate notification and quick panels
Instantly access the panel you need with more space for quick settings. Swipe down from the top right corner of the screen to open the quick settings panel. Swipe down from anywhere else on the top of the screen to open the notification panel.

Customize your quick panel
Create the quick panel layout that's right for you. You can tap the pencil icon at the top of the quick panel to enter Edit mode, then move buttons and controls up and down to match your preferences.

Live notifications
Stay on top of what's happening right now. Live notifications show you the progress of ongoing activities like timers, voice recordings, exercises, and more so you can take quick actions related to them. Live notifications will appear in the Now bar on the Lock screen, on the status bar, and at the top of the notification panel.

New notification layout
Icons on notifications are now the same as the icon that appears on your Home screen, making it easy to recognize which app sent each notification. Grouped notifications appear as a stack of cards. Tap a stack to show all notifications in the group.

Instantly access useful information

Press and hold the Side button to access Google Gemini
The Side button is a new way to access Google Gemini or other digital assistant app quickly instead of using the corner swipe. You can change what the Side button does in Settings.

Complete multiple tasks with one ask
Google Gemini is now seamlessly integrated with Samsung apps such as Calendar, Notes, Reminder, and Clock. You can complete tasks in these apps using information from Gemini with one simple command. Try asking Google Gemini to ask about a YouTube video and save the result in Samsung Notes, or try asking Google Gemini to find your favorite sports team’s schedule and add the games to your calendar.

Circle it, find it. Hear it, find it
Circle to Search with Google allows you to search anything on your screen and get information faster with AI Overviews. Just circle an object—including images, videos, or text—and you'll get results immediately. You can even search for a song that you hear in the moment without switching apps.

Capture images with ease

New Camera layout
Camera buttons, controls, and modes have been reorganized to make it easier to find the features you need and to give you a clearer preview of the picture you're...

Android Version

N/A

File Size

331.44 MB

Release Date

Jun 01, 2025

Flash Method

Odin

Download ROM

Available
File Size: 0.32 GB

Mirror Downloads (1)

1 mirror(s) available • Click any button to download
Advertisement

Verification & Details

Package Name:

G991QOPU1EYF3

How to Flash Odin on Samsung Galaxy S21 (SM-G991Q)

Please follow these steps carefully to install the G991QOPU1EYF3/G991QSJP1EYF3/G991QOPU1EYF3 update safely. Ensure your device has at least 60% battery.

  1. Download the G991QOPU1EYF3/G991QSJP1EYF3/G991QOPU1EYF3 Recovery ROM (.zip file).
  2. Transfer the file to the internal storage root directory of your Samsung Galaxy S21 (SM-G991Q).
  3. Navigate to Settings > About Phone > System Update.
  4. Tap the OS logo 10 times to enable advanced features.
  5. Tap the top-right menu icon and select 'Choose update package'.
  6. Select the downloaded zip file and wait for the automated installation to complete.
Back to Samsung Galaxy S21 (SM-G991Q)