Galaxy S21 5G (SM-G991B) Firmware - Samsung Firmware Monitor

Galaxy S21 5G

Device Information

Model	SM-G991B
Last Update	2025-05-01 00:00:00

Firmware Summary

This device has 19 firmware versions across multiple regions.

Last firmware check: 2025-05-01 00:00:00

Available Firmware Versions

Latest

2025-05-27 111 regions BL: SF Date: 2025.05 Version: 7.1

Available in these regions:

PHILIPPINES

MALAYSIA

THAILAND

PHILIPPINES

VIETNAM

THAILAND

UNITED KINGDOM

SPAIN

SLOVENIA

SRI LANKA

CROATIA

AUSTRIA

SPAIN

CZECH

POLAND

GERMANY

UNITED KINGDOM

CROATIA

ROMANIA

FRANCE

GREECE

NETHERLANDS

POLAND

ROMANIA

SERBIA MONTENEGRO

UKRAINE

CAUCASUS

SLOVAKIA

SERBIA MONTENEGRO

SLOVAKIA

POLAND

HUNGARY

RUSSIA

NEPAL

INDIA

SLOVENIA

ITALY

MACEDONIA

FRANCE

PORTUGAL

SWITZERLAND

SPAIN

AUSTRIA

KAZAKHSTAN

IRELAND

CZECH

IRELAND

PORTUGAL

BULGARIA

PORTUGAL

HUNGARY

GERMANY

NETHERLANDS

ITALY

FRANCE

NORDIC

UNITED KINGDOM

CZECH

SPAIN

IRELAND

ALBANIA

SEAD SERBIA

POLAND

AUSTRIA

ROMANIA

SLOVENIA

ITALY

SWITZERLAND

SLOVAKIA

UK & IRE

UNITED KINGDOM

GERMANY

NETHERLANDS

ITALY

GREECE

BALTICK

GREECE

AUSTRIA

IRELAND

ROMANIA

CZECH

LUXEMBURG

SWEDEN

TUNISIA

UNITED ARAB EMIRATES

AUSTRALIA

TURKEY

AFGHANISTAN

KENYA

NEW ZEALAND

SINGAPORE

SOUTH AFRICA

SAUDI ARABIA

SINGAPORE

SAUDI ARABIA

AUSTRALIA

UNITED ARAB EMIRATES

SINGAPORE

SOUTH AFRICA

UNITED ARAB EMIRATES

ISRAEL

SOUTH AFRICA

NIGERIA

MOROCCO

PAKISTAN

AUSTRALIA

EGYPT

LEBANON

SINGAPORE (STARHUB)

UNITED ARAB EMIRATES

Latest

2025-05-27 1 regions BL: SF Date: 2025.05 Version: 7.1

Available in these regions:

INDONESIA

Latest

2025-05-01 32 regions BL: SF Date: 2025.05 Version: 7.1

Available in these regions:

COSTA RICA

CHILE

DOMINICAN REP.

COLOMBIA

PERU

PARAGUAY

ARGENTINA

PERU

ARGENTINA

GUATEMALA

ARGENTINA URUGUAY

ARGENTINA

PANAMA

URUGUAY

COLOMBIA

MEXICO

COLOMBIA

PARAGUAY

CHILE

MEXICO

PARAGUAY

BRAZIL

MEXICO

BRAZIL

BOLIVIA

Latest

2025-05-01 5 regions BL: SF Date: 2025.05 Version: 7.1

Available in these regions:

CHILE

ARGENTINA

DOMINICA

JAMAICA

COSTA RICA

Latest

2025-05-01 3 regions BL: SF Date: 2025.05 Version: 7.1

Available in these regions:

CHILE

ECUADOR

PANAMA

Latest

2025-05-01 1 regions BL: SF Date: 2025.05 Version: 7.1

Available in these regions:

FRANCE

2025-04-01 32 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

COSTA RICA

COLOMBIA

CHILE

COLOMBIA

DOMINICAN REP.

COLOMBIA

GUATEMALA

ARGENTINA

PARAGUAY

ARGENTINA

ARGENTINA URUGUAY

ARGENTINA

COLOMBIA

PERU

CHILE

PERU

URUGUAY

PERU

PARAGUAY

COLOMBIA

BOLIVIA

PANAMA

MEXICO

BRAZIL

2025-04-01 5 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

DOMINICA

ARGENTINA

COSTA RICA

CHILE

JAMAICA

2025-04-01 1 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

FRANCE

2025-04-01 111 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

NEW ZEALAND

AUSTRALIA

SOUTH AFRICA

AUSTRALIA

ITALY

IRELAND

NETHERLANDS

SLOVENIA

SWITZERLAND

FRANCE

POLAND

SPAIN

SLOVENIA

SOUTH AFRICA

TURKEY

UNITED ARAB EMIRATES

MOROCCO

AFGHANISTAN

UNITED ARAB EMIRATES

SAUDI ARABIA

TUNISIA

SAUDI ARABIA

NIGERIA

UNITED ARAB EMIRATES

PAKISTAN

KENYA

ISRAEL

LEBANON

EGYPT

NETHERLANDS

PORTUGAL

PHILIPPINES

RUSSIA

SLOVAKIA

UNITED KINGDOM

ROMANIA

GREECE

SINGAPORE

ITALY

UNITED KINGDOM

NEPAL

AUSTRIA

NORDIC

UK & IRE

GREECE

POLAND

SEAD SERBIA

CROATIA

SLOVAKIA

NETHERLANDS

MACEDONIA

SLOVENIA

BULGARIA

CZECH

GERMANY

THAILAND

PORTUGAL

HUNGARY

IRELAND

UNITED KINGDOM

CZECH

UNITED KINGDOM

CZECH

CROATIA

FRANCE

GREECE

AUSTRIA

CAUCASUS

CZECH

SRI LANKA

SPAIN

BALTICK

SINGAPORE

POLAND

HUNGARY

VIETNAM

ROMANIA

SPAIN

IRELAND

ROMANIA

INDIA

MALAYSIA

SERBIA MONTENEGRO

PORTUGAL

GERMANY

KAZAKHSTAN

FRANCE

SWEDEN

ITALY

THAILAND

LUXEMBURG

ROMANIA

SLOVAKIA

AUSTRIA

ALBANIA

SERBIA MONTENEGRO

AUSTRIA

ITALY

PHILIPPINES

GERMANY

IRELAND

SINGAPORE (STARHUB)

SPAIN

POLAND

UKRAINE

SWITZERLAND

2025-04-01 3 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

ECUADOR

CHILE

PANAMA

2025-04-01 1 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

INDONESIA

2025-01-01 32 regions BL: SE Date: 2025.01 Version: 6.2

Available in these regions:

URUGUAY

PERU

PARAGUAY

PANAMA

MEXICO

GUATEMALA

COSTA RICA

COLOMBIA

BOLIVIA

ARGENTINA URUGUAY

PERU

MEXICO

DOMINICAN REP.

COLOMBIA

CHILE

BRAZIL

ARGENTINA

2025-01-01 115 regions BL: SE Date: 2025.01 Version: 6.2

Available in these regions:

UNITED KINGDOM

UNITED ARAB EMIRATES

UK & IRE

TUNISIA

THAILAND

SRI LANKA

SPAIN

SLOVENIA

SLOVAKIA

SINGAPORE (STARHUB)

SINGAPORE

SEAD SERBIA

SAUDI ARABIA

ROMANIA

PORTUGAL

POLAND

PANAMA

NORDIC

NEW ZEALAND

NETHERLANDS

NEPAL

LEBANON

KENYA

ISRAEL

IRELAND

ECUADOR

CHILE

CAUCASUS

BULGARIA

ALBANIA

AFGHANISTAN

THAILAND

VIETNAM

UNITED KINGDOM

UNITED ARAB EMIRATES

UNITED KINGDOM

UKRAINE

UNITED ARAB EMIRATES

TURKEY

UNITED ARAB EMIRATES

SWITZERLAND

SWEDEN

SPAIN

SOUTH AFRICA

SLOVAKIA

SLOVENIA

SERBIA MONTENEGRO

SINGAPORE

SERBIA MONTENEGRO

RUSSIA

ROMANIA

POLAND

PORTUGAL

POLAND

PAKISTAN

NIGERIA

PHILIPPINES

NETHERLANDS

PHILIPPINES

NETHERLANDS

MOROCCO

MALAYSIA

MACEDONIA

LUXEMBURG

KAZAKHSTAN

ITALY

IRELAND

HUNGARY

INDIA

HUNGARY

GREECE

GERMANY

FRANCE

EGYPT

CROATIA

CZECH

AUSTRIA

BALTICK

AUSTRIA

AUSTRALIA

AUSTRIA

AUSTRALIA

2025-01-01 5 regions BL: SE Date: 2025.01 Version: 6.2

Available in these regions:

JAMAICA

DOMINICA

COSTA RICA

CHILE

ARGENTINA

2025-01-01 1 regions BL: SE Date: 2025.01 Version: 6.2

Available in these regions:

INDONESIA

Latest

2021-04-01 3 regions BL: U3 Date: 2021.04 Version: 0.10

Available in these regions:

SAMPLE

Latest

2021-02-01 2 regions BL: U1 Date: 2021.02 Version: 0.8

Available in these regions:

UZBEKISTAN CENTRAL ASIA

UNITED KINGDOM

Latest

2021-02-01 1 regions BL: U1 Date: 2021.02 Version: 0.8

Available in these regions:

JAMAICA

Download Firmware with GNSF

You can download firmware files using GNSF (Get New Samsung Firmware), a tool that allows direct firmware downloads from Samsung servers.

Download GNSF Tool

GUI Version (Windows) Console Version (Windows) GNSF Tool Info

Quick Command for This Device

Replace YOUR_IMEI with your device's IMEI and XAA with your region code.

Additional Options

-v VERSION - Specify version
--resume - Resume downloads
--no-decrypt - Skip decryption

IMEI Important: You should enter your complete IMEI number. While GNSF can attempt to generate missing digits if you provide only the first 8+ digits, this may not be sufficient for downloading firmware in all cases. Using your full IMEI ensures the highest success rate.

Important Flashing Info

To Keep Your Data When Flashing:

Always use HOME_CSC file instead of regular CSC file in Odin's CSC slot!

Region Compatibility:

You can safely flash firmware from any region (CSC) to your phone. In 99% of cases, it doesn't affect functionality and just updates the firmware version.

Firmware Components:

AP - System files
BL - Bootloader
CP - Modem/baseband
CSC - Region configuration (wipes data)
HOME_CSC - Region config (keeps data)

Detailed Flashing Guide