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Samsung firmware SM-G991U1 / Galaxy S21 SM-G991U1 52

Device	Model	CSC	Version	Bit	OS	Build date	Link
Samsung Galaxy S21	SM-G991U1	ACG	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	AIO	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	ATT	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	CCT	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	CHA	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	FKR	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	LRA	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	SPR	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	USC	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→
Samsung Galaxy S21	SM-G991U1	VZW	G991U1UEU1AUAG	1	R(Android 11)	20210201082405	→

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How to flash Samsung SM-G991U1 / Galaxy S21 SM-G991U1 firmware

1. Extract (unzip) the Samsung firmware file. Recommended using WinRAR or 7-Zip

2. Download Odin Tool 3.13.1

3. Extract Odin ZIP file

4. Open Odin execute file

5. Reboot Samsung phone in Download Mode (hold Home + Power + Volume Down buttons / hold Volume Down + Bixby buttons then plug-in cable)

6. Connect you Samsung phone and wait until you get a blue sign in Odin

7. Add the 1 file Samsung firmware to AP/PDA or 4 files Samsung firmware (AP/BL/CP/CSC) to it's slots

8. Make sure re-partition is NOT ticked

9. Click the START button, sit back and wait few minutes

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Samsung firmware SM-G991U1 / Galaxy S21 SM-G991U1 52