This is the official Stock ROM (Firmware) Collection for various combination and stock / full rom for Samsung Galaxy S21 5G SM-G991 models. These official ROMs are essential for repairing software issues, fixing bootloops, or restoring your smartwatch or smartphone to factory default.
Prerequisites & Preparation
- Backup Data: Flashing will completely wipe all data on your device. Back up important files and settings before proceeding.
- Battery Level: Ensure your device has at least 50% battery to prevent shutdown during the flashing process.
- USB Driver & Tools: Install the correct USB drivers for your brand and prepare the flashing tool (Odin for Samsung, SP Flash Tool/QPST for Qualcomm/MTK, etc.).
CAUTION: Flashing official firmware carries a risk of bricking your device. Proceed with caution and at your own risk. addROM is not responsible for any damage caused to your device.
Download Stock ROM & Firmware
Samsung Galaxy S21 5G (SM-G9910)
| File Type | AP / PDA Build (Binary) | Region (CSC) | OS Version | Download Link |
|---|---|---|---|---|
| Combination | COMBINATION | G9910ZCU1AUB4.zip | – | Google Drive | OneDrive |
| Stock / full | G9910ZHS6EWJ1 | TGY (Hong Kong) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G9910ZHS5EWI1 | TGY (Hong Kong) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G9910ZHU4EWE5 | TGY (Hong Kong) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G9910ZHS2DVL3 | TGY (Hong Kong) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G9910ZHU2BUL3 | TGY (Hong Kong) | Android 12 (One UI 4) | Google Drive | DropBox |
| Stock / full | G9910ZHS2AUIN | TGY (Hong Kong) | Android 11 (One UI 3) | Google Drive | DropBox |
| Stock / full | G9910ZHU1AUB7 | TGY (Hong Kong) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
Samsung Galaxy S21 5G (SM-G991B)
| File Type | AP / PDA Build (Binary) | Region (CSC) | OS Version | Download Link |
|---|---|---|---|---|
| Combination | COMBINATION | FAR0 | – | Google Drive | DropBox |
| Combination | COMBINATION | G991BXXU2AUD3.zip | – | Google Drive | OneDrive |
| Combination | COMBINATION | G991BXXU1AUA3.zip | – | Google Drive | OneDrive |
| Stock / full | G991BXXU9FWK3 | XXV (Vietnam) | Android 14 (One UI 6) | Google Drive | OneDrive |
| Stock / full | G991BXXU8EWF1 | XXV (Vietnam) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991BXXU7EWE6 | XXV (Vietnam) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991BXXS6EWBB | XXV (Vietnam) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991BXXU5DVKF | XXV (Vietnam) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991BXXU4BULF | XXV (Vietnam) | Android 12 (One UI 4) | Google Drive | DropBox |
| Stock / full | G991BXXS3BULC | XXV (Vietnam) | Android 12 (One UI 4) | Google Drive | DropBox |
| Stock / full | G991BXXS3AUJ7 | XXV (Vietnam) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991BXXU2AUC8 | XXV (Vietnam) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991BXXU1AUA4 | XXV (Vietnam) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
Samsung Galaxy S21 5G (SM-G991N)
| File Type | AP / PDA Build (Binary) | Region (CSC) | OS Version | Download Link |
|---|---|---|---|---|
| Combination | Updating… | – | ||
| Stock / full | G991NKSU4EWE9 | SKC (South Korea (SK Telecom)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU4EWE9 | LUC (South Korea (LG Uplus)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU4EWE9 | KTC (South Korea (KT Corporation)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU4EWE9 | KOO (South Korea (Unlocked)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | SKC (South Korea (SK Telecom)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | LUC (South Korea (LG Uplus)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | KTC (South Korea (KT Corporation)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | KOO (South Korea (Unlocked)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | SKC (South Korea (SK Telecom)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | LUC (South Korea (LG Uplus)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | KTC (South Korea (KT Corporation)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3DVL2 | KOO (South Korea (Unlocked)) | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991NKSU3BULF | KOO (South Korea (Unlocked)) | Android 12 (One UI 4) | Google Drive | DropBox |
| Stock / full | G991NKSS3AUIN | KOO (South Korea (Unlocked)) | Android 11 (One UI 3) | Google Drive | DropBox |
| Stock / full | G991NKSU2AUC8 | KOO (South Korea (Unlocked)) | Android 11 (One UI 3) | Google Drive | DropBox |
| Stock / full | G991NKSU1AUB8 | KOO (South Korea (Unlocked)) | Android 11 (One UI 3) | Google Drive | DropBox |
| Stock / full | G991NKSU3BULF | KTC (South Korea (KT Corporation)) | Android 12 (One UI 4) | Google Drive | DropBox |
| Stock / full | G991NKSS3AUIN | KTC (South Korea (KT Corporation)) | Android 11 (One UI 3) | Google Drive | DropBox |
| Stock / full | G991NKSS2AUBB | KTC (South Korea (KT Corporation)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSU1AUA4 | KTC (South Korea (KT Corporation)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSU3BULF | LUC (South Korea (LG Uplus)) | Android 12 (One UI 4) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSS3AUIN | SKC (South Korea (SK Telecom)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSU2AUC8 | SKC (South Korea (SK Telecom)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSU1AUAA | SKC (South Korea (SK Telecom)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSU3BULF | SKC (South Korea (SK Telecom)) | Android 12 (One UI 4) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSS3AUIN | LUC (South Korea (LG Uplus)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSU2AUC8 | LUC (South Korea (LG Uplus)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991NKSU1AUAA | LUC (South Korea (LG Uplus)) | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
Samsung Galaxy S21 5G (SM-G991U1)
| File Type | AP / PDA Build (Binary) | Region (CSC) | OS Version | Download Link |
|---|---|---|---|---|
| Combination | COMBINATION | FAR0 | – | Google Drive | AFH | OneDrive | DropBox |
| Combination | COMBINATION | FAR0 | – | Google Drive | AFH | OneDrive | Google Drive |
| Stock / full | G991U1UES9EWK1 | ACG | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991U1UES8EWF6 | ACG | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991U1UEU7EWF4 | ACG | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991U1UES6EWD6 | ACG | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991U1UEU5DVL1 | ACG | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991U1UES4BULE | ACG | Android 12 (One UI 4) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991U1UEU4AUI7 | ACG | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991U1UEU3AUDD | ACG | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991U1UEU2AUC8 | ACG | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991U1UEU1ATLI | ACG | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
Samsung Galaxy S21 5G (SM-G991U)
| File Type | AP / PDA Build (Binary) | Region (CSC) | OS Version | Download Link |
|---|---|---|---|---|
| Combination | COMBINATION | FAR0 | – | Google Drive | AFH | OneDrive | DropBox |
| Combination | COMBINATION | G991USQU2AUC3.zip | – | Google Drive | OneDrive |
| Combination | COMBINATION | G991USQU1AUA5.zip | – | Google Drive | OneDrive |
| Stock / full | G991USQU9FWK9 | SPR | Android 14 (One UI 6) | Google Drive | OneDrive |
| Stock / full | G991USQS8EWG1 | SPR | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991USQU7EWF4 | SPR | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991USQS6EWD4 | SPR | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991USQU5DVL9 | SPR | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991USQS4BUKK | SPR | Android 12 (One UI 4) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991USQS4AUIR | SPR | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991USQU3AUDD | SPR | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991USQU2AUC8 | SPR | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991USQU1AUAG | SPR | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
Samsung Galaxy S21 5G (SM-G991W)
| File Type | AP / PDA Build (Binary) | Region (CSC) | OS Version | Download Link |
|---|---|---|---|---|
| Combination | COMBINATION | FAR0 | – | Google Drive | AFH | OneDrive | DropBox |
| Combination | COMBINATION | FAR0 | – | Google Drive | AFH | OneDrive | Google Drive |
| Stock / full | G991WVLU9FWK5 | XAC | Android 14 (One UI 6) | Google Drive | OneDrive |
| Stock / full | G991WVLU8EWH6 | XAC | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991WVLU7EWE5 | XAC | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991WVLS6EWD2 | XAC | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991WVLS5DVK4 | XAC | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991WVLS4BUKK | XAC | Android 12 (One UI 4) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991WVLU4AUIB | XAC | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991WVLU3AUDE | XAC | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991WVLU2AUB5 | XAC | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
| Stock / full | G991WVLU1AUAG | XAC | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
Samsung Galaxy S21 5G (SM-G991Q)
| File Type | AP / PDA Build (Binary) | Region (CSC) | OS Version | Download Link |
|---|---|---|---|---|
| Combination | Updating… | – | ||
| Stock / full | G991QOPU1CVK6 | SJP | Android 13 (One UI 5) | Google Drive | OneDrive |
| Stock / full | G991QOPU1BVH1 | SJP | Android 12 (One UI 4) | Google Drive | OneDrive |
| Stock / full | G991QOPU1AUJ2 | SJP | Android 11 (One UI 3) | Google Drive | AFH | OneDrive | DropBox |
How to Flash Firmware / Stock ROM
To flash the firmware or combination files onto your device, please refer to our detailed step-by-step flashing guides. For Samsung devices, you can follow our Odin guide: [TUTS] How to use Samsung Odin tool to flash firmware/ROM for Samsung Devices. For other brands, prepare the compatible flashing tool (such as SP Flash Tool, Fastboot, QPST, or ResearchDownload) specifically required for your device chipset.
