G991U1OYM9FWL3 | Samsung firmwares by csc | EN

Download the latest Samsung firmware ✅ csc G991U1OYM9FWL3. 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-G991U1XARG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1XAA

SM-G991U1XAAG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1XAG

SM-G991U1XAGG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1VZW

SM-G991U1VZWG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1TMK

SM-G991U1TMKG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1SPR

SM-G991U1SPRG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1LRA

SM-G991U1LRAG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1ATC

SM-G991U1ATCG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1AIO

SM-G991U1AIOG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314
Samsung Galaxy S21 5GSM-G991U1CCT

SM-G991U1CCTG991U1UEU9FWL3

One UI 6.0 Upgrade

Quick panel

New button layout
The quick panel has a new layout that makes it easier to access the features you use most. Wi-Fi and Bluetooth now have their own dedicated buttons at the top of the screen, while visual features, like Dark mode and Eye comfort shield have been moved to the bottom. Other quick settings buttons appear in a customizable area in the middle.

Instantly access the full quick panel
By default, a compact quick panel with notifications appears when you swipe down from the top of the screen. Swiping down again hides notifications and shows the expanded quick panel. If you turn on Quick settings instant access, you can view the expanded quick panel by swiping just once from the right side of the top of the screen. Swiping down from the left side shows notifications.

Quickly access brightness control
The brightness control bar now appears by default in the compact quick panel wh...
G991U1OYM9FWL3G991U1UEU9FWL314

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: G991U1OYM9FWL3. 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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