Download the latest Samsung firmware ✅ csc ⭐ G991BOWO3BUKG. Full list of firmwares available for download
| Device | Model | Region | PDA/AP Version | CSC Version | MODEM/CP Version | Os Version | Build Date | ||
|---|---|---|---|---|---|---|---|---|---|
| Samsung Galaxy S21 5G | SM-G991B | CTU | SM-G991BCTUG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | CTP | SM-G991BCTPG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | CGU | SM-G991BCGUG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | UFN | SM-G991BUFNG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | PSN | SM-G991BPSNG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | ARO | SM-G991BAROG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | CTI | SM-G991BCTIG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | CHL | SM-G991BCHLG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | SAM | SM-G991BSAMG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 | |||
| Samsung Galaxy S21 5G | SM-G991B | PNT | SM-G991BPNTG991BXXS3BULCOne UI 4 Upgrade (Android 12) One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever. Check out the changes below. Color palette Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone. Privacy One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the wrong hands. Permission info at a glance See when each app accesses sensitive permissions such as Location, Camera, or Microphone in Permission usage. You can deny permissions for any apps you don’t feel comfortable with. Camera and microphone indicators Keep prying eyes and ears away. A green dot will appear in the upper right corner of the screen when any app is using the camera or microphone. You... | G991BOWO3BUKG | G991BXXU3BULA | 12 |
We recommend using Samsung’s own utilities, Samsung Smart Switch and OTA (Over-the-air), to upgrade devices. Use our site only if you are 100% sure about the risks involved in flashing your device csc: G991BOWO3BUKG. We is not responsible for any damage caused by using the files on this website.
The Firmwares provided here are all official Samsung's Android Firmwares and has NOT been modified by anyway as we get them directly from KIES servers.
We live-monitor all firmware updates for every Samsung device, in over 500 regions.
Beware, Manually flashing firmwares may brick your device, use it at your own risk and follow our tutorial steps.