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

Galaxy S21 5G

Device Information

Model	SM-G991B
Last Update	2025-10-01 00:00:00

Firmware Summary

This device has 34 firmware versions across multiple regions.

Last firmware check: 2025-10-01 00:00:00

Available Firmware Versions

Latest

2025-11-28 77 regions BL: SI Date: 2025.11 Version: 7.1

Available in these regions:

SRI LANKA

NEPAL

INDIA

SWITZERLAND

FRANCE

AUSTRIA

POLAND

ITALY

BALTICK

IRELAND

SPAIN

CZECH

SLOVENIA

HUNGARY

FRANCE

SEAD SERBIA

CROATIA

GREECE

ROMANIA

CZECH

SPAIN

NORDIC

AUSTRIA

SWEDEN

PORTUGAL

CAUCASUS

SERBIA MONTENEGRO

AUSTRIA

ITALY

MACEDONIA

GERMANY

UNITED KINGDOM

RUSSIA

SPAIN

IRELAND

GERMANY

NETHERLANDS

IRELAND

GERMANY

POLAND

SLOVAKIA

SLOVENIA

SERBIA MONTENEGRO

UNITED KINGDOM

ROMANIA

UNITED KINGDOM

POLAND

PORTUGAL

LUXEMBURG

IRELAND

SWITZERLAND

ALBANIA

CZECH

SLOVAKIA

POLAND

ROMANIA

CROATIA

ITALY

SPAIN

AUSTRIA

FRANCE

GREECE

ITALY

SLOVENIA

CZECH

NETHERLANDS

GREECE

PORTUGAL

UK & IRE

BULGARIA

UKRAINE

KAZAKHSTAN

UNITED KINGDOM

SLOVAKIA

HUNGARY

Latest

2025-11-01 1 regions BL: SI Date: 2025.11 Version: 7.1

Available in these regions:

FRANCE

Latest

2025-10-27 108 regions BL: SH Date: 2025.10 Version: 7.1

Available in these regions:

SINGAPORE (STARHUB)

IRELAND

MACEDONIA

SLOVAKIA

SWITZERLAND

CZECH

NORDIC

ROMANIA

GERMANY

IRELAND

ITALY

POLAND

UKRAINE

CZECH

BULGARIA

POLAND

GERMANY

UK & IRE

ROMANIA

ITALY

POLAND

UNITED KINGDOM

PORTUGAL

SLOVENIA

CZECH

RUSSIA

CAUCASUS

NETHERLANDS

AUSTRIA

NETHERLANDS

POLAND

GREECE

SPAIN

SERBIA MONTENEGRO

SLOVENIA

FRANCE

SPAIN

SEAD SERBIA

HUNGARY

SINGAPORE

BALTICK

SWEDEN

SERBIA MONTENEGRO

LUXEMBURG

IRELAND

AUSTRIA

ITALY

SLOVENIA

PORTUGAL

AUSTRIA

CROATIA

AUSTRIA

UNITED KINGDOM

CROATIA

CZECH

ROMANIA

SLOVAKIA

UNITED KINGDOM

SINGAPORE

KAZAKHSTAN

SINGAPORE

ALBANIA

GERMANY

HUNGARY

NETHERLANDS

ITALY

SPAIN

UNITED KINGDOM

SPAIN

PORTUGAL

GREECE

ROMANIA

SLOVAKIA

FRANCE

AUSTRALIA

SOUTH AFRICA

UNITED ARAB EMIRATES

TURKEY

UNITED ARAB EMIRATES

TUNISIA

AUSTRALIA

SOUTH AFRICA

SAUDI ARABIA

UNITED ARAB EMIRATES

SOUTH AFRICA

AUSTRALIA

KENYA

AFGHANISTAN

EGYPT

SAUDI ARABIA

NIGERIA

ISRAEL

MOROCCO

PAKISTAN

SWITZERLAND

AUSTRALIA

LEBANON

UNITED ARAB EMIRATES

THAILAND

PHILIPPINES

NEW ZEALAND

VIETNAM

MALAYSIA

2025-10-27 1 regions BL: SH Date: 2025.10 Version: 7.1

Available in these regions:

FRANCE

Latest

2025-10-21 1 regions BL: SH Date: 2025.10 Version: 7.1

Available in these regions:

INDONESIA

Latest

2025-10-01 5 regions BL: SH Date: 2025.10 Version: 7.1

Available in these regions:

CHILE

JAMAICA

COSTA RICA

ARGENTINA

DOMINICA

Latest

2025-10-01 32 regions BL: SH Date: 2025.10 Version: 7.1

Available in these regions:

PERU

BRAZIL

GUATEMALA

PERU

PARAGUAY

PERU

BRAZIL

ARGENTINA

MEXICO

PERU

CHILE

ARGENTINA URUGUAY

MEXICO

BRAZIL

COLOMBIA

PARAGUAY

ARGENTINA

COLOMBIA

BOLIVIA

ARGENTINA

DOMINICAN REP.

COSTA RICA

CHILE

COLOMBIA

MEXICO

PARAGUAY

COLOMBIA

URUGUAY

BRAZIL

PANAMA

Latest

2025-10-01 3 regions BL: SH Date: 2025.10 Version: 7.1

Available in these regions:

CHILE

PANAMA

ECUADOR

2025-08-29 32 regions BL: SG Date: 2025.08 Version: 7.1

Available in these regions:

COLOMBIA

PERU

COLOMBIA

PERU

MEXICO

PARAGUAY

URUGUAY

GUATEMALA

PANAMA

ARGENTINA URUGUAY

PARAGUAY

CHILE

COSTA RICA

COLOMBIA

DOMINICAN REP.

ARGENTINA

BOLIVIA

CHILE

ARGENTINA

BRAZIL

MEXICO

BRAZIL

MEXICO

2025-08-29 3 regions BL: SG Date: 2025.08 Version: 7.1

Available in these regions:

PANAMA

ECUADOR

CHILE

2025-08-28 110 regions BL: SG Date: 2025.08 Version: 7.1

Available in these regions:

BALTICK

SINGAPORE

KENYA

SWEDEN

PORTUGAL

SINGAPORE

NIGERIA

SAUDI ARABIA

SRI LANKA

LUXEMBURG

SERBIA MONTENEGRO

VIETNAM

UNITED ARAB EMIRATES

UNITED KINGDOM

BULGARIA

CZECH

AFGHANISTAN

ROMANIA

AUSTRIA

HUNGARY

PORTUGAL

SPAIN

ITALY

SLOVAKIA

POLAND

SAUDI ARABIA

ROMANIA

ITALY

GREECE

FRANCE

SOUTH AFRICA

AUSTRIA

CZECH

THAILAND

SPAIN

NETHERLANDS

SWITZERLAND

CZECH

SWITZERLAND

NETHERLANDS

SINGAPORE

ISRAEL

ROMANIA

LEBANON

UNITED KINGDOM

GERMANY

IRELAND

NORDIC

PHILIPPINES

IRELAND

SLOVENIA

ROMANIA

EGYPT

SOUTH AFRICA

AUSTRALIA

FRANCE

ALBANIA

ITALY

PAKISTAN

UK & IRE

UNITED ARAB EMIRATES

POLAND

INDIA

POLAND

CROATIA

CZECH

SLOVAKIA

TUNISIA

SPAIN

GREECE

IRELAND

NEPAL

MOROCCO

AUSTRALIA

AUSTRIA

SEAD SERBIA

MACEDONIA

SOUTH AFRICA

SERBIA MONTENEGRO

UNITED KINGDOM

SLOVENIA

UNITED ARAB EMIRATES

THAILAND

UNITED KINGDOM

ITALY

HUNGARY

FRANCE

GERMANY

POLAND

IRELAND

SLOVENIA

AUSTRALIA

MALAYSIA

CROATIA

SLOVAKIA

UNITED ARAB EMIRATES

GREECE

GERMANY

AUSTRIA

PHILIPPINES

PORTUGAL

SINGAPORE (STARHUB)

TURKEY

UKRAINE

KAZAKHSTAN

CAUCASUS

RUSSIA

2025-08-28 1 regions BL: SG Date: 2025.08 Version: 7.4

Available in these regions:

NEW ZEALAND

2025-08-28 1 regions BL: SG Date: 2025.08 Version: 7.1

Available in these regions:

INDONESIA

2025-08-01 5 regions BL: SG Date: 2025.08 Version: 7.1

Available in these regions:

CHILE

ARGENTINA

JAMAICA

DOMINICA

COSTA RICA

2025-08-01 1 regions BL: SG Date: 2025.08 Version: 7.1

Available in these regions:

FRANCE

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

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

Available in these regions:

INDONESIA

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

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

Available in these regions:

CHILE

ARGENTINA

DOMINICA

JAMAICA

COSTA RICA

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

Available in these regions:

CHILE

ECUADOR

PANAMA

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