G991U1UEU4BUK7 | Samsung firmwares by modem | EN

Download the latest Samsung firmware ✅ modem G991U1UEU4BUK7. Full list of firmwares available for download

Showing 1-10 of 19 items.
Samsung firmware list
DeviceModelRegionPDA/AP VersionCSC VersionMODEM/CP VersionOs VersionBuild Date
Samsung Galaxy S21 5GSM-G991U1XAR

SM-G991U1XARG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1XAG

SM-G991U1XAGG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1LRA

SM-G991U1LRAG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1FKR

SM-G991U1FKRG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1DSH

SM-G991U1DSHG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1ATC

SM-G991U1ATCG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1AIO

SM-G991U1AIOG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1XASG991U1UEU4BUK7G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1USC

SM-G991U1USCG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712
Samsung Galaxy S21 5GSM-G991U1TMB

SM-G991U1TMBG991U1UEU4BUK7

One 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...
G991U1OYM4BUK7G991U1UEU4BUK712

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 modem: G991U1UEU4BUK7. 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.

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