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

Galaxy S21 5G

Device Information

Model	SM-G991B
Last Update	2025-04-01 00:00:00

Firmware Summary

This device has 12 firmware versions across multiple regions.

Last firmware check: 2025-04-01 00:00:00

Available Firmware Versions

Latest

2025-04-01 110 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

THAILAND

CROATIA

ITALY

SWEDEN

FRANCE

KAZAKHSTAN

GREECE

GERMANY

PORTUGAL

AUSTRIA

SERBIA MONTENEGRO

CAUCASUS

MALAYSIA

CZECH

INDIA

ROMANIA

SRI LANKA

IRELAND

SPAIN

ROMANIA

VIETNAM

BALTICK

HUNGARY

POLAND

SINGAPORE

SLOVENIA

AUSTRALIA

SWITZERLAND

FRANCE

POLAND

SPAIN

SLOVENIA

SOUTH AFRICA

TURKEY

UNITED ARAB EMIRATES

MOROCCO

AFGHANISTAN

UNITED ARAB EMIRATES

ITALY

AUSTRALIA

SAUDI ARABIA

AUSTRALIA

SOUTH AFRICA

TUNISIA

SAUDI ARABIA

NIGERIA

UNITED ARAB EMIRATES

PAKISTAN

KENYA

ISRAEL

IRELAND

NETHERLANDS

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

SWITZERLAND

UKRAINE

THAILAND

POLAND

PORTUGAL

SPAIN

HUNGARY

SINGAPORE (STARHUB)

IRELAND

GERMANY

PHILIPPINES

UNITED KINGDOM

ITALY

CZECH

AUSTRIA

SERBIA MONTENEGRO

ALBANIA

UNITED KINGDOM

AUSTRIA

SLOVAKIA

CZECH

ROMANIA

LUXEMBURG

Latest

2025-04-01 10 regions BL: UE Date: 2025.04 Version: 7.5

Available in these regions:

COLOMBIA

BOLIVIA

PANAMA

BRAZIL

MEXICO

BRAZIL

Latest

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

Available in these regions:

JAMAICA

Latest

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

Available in these regions:

ECUADOR

CHILE

PANAMA

Latest

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

Available in these regions:

INDONESIA

Latest

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

Available in these regions:

PERU

COLOMBIA

COSTA RICA

GUATEMALA

PARAGUAY

PERU

URUGUAY

ARGENTINA

CHILE

COLOMBIA

DOMINICAN REP.

PERU

ARGENTINA URUGUAY

MEXICO

COLOMBIA

BRAZIL

BOLIVIA

PANAMA

MEXICO

Latest

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

Available in these regions:

NEW ZEALAND

FRANCE

SRI LANKA

IRELAND

CZECH

INDIA

MALAYSIA

AUSTRIA

SERBIA MONTENEGRO

GREECE

GERMANY

FRANCE

CROATIA

ITALY

CZECH

ROMANIA

AUSTRIA

CZECH

AUSTRIA

ITALY

IRELAND

HUNGARY

SINGAPORE (STARHUB)

PORTUGAL

SPAIN

THAILAND

POLAND

GERMANY

SWITZERLAND

CZECH

TURKEY

UNITED ARAB EMIRATES

SLOVENIA

UNITED ARAB EMIRATES

MACEDONIA

UNITED ARAB EMIRATES

NETHERLANDS

UNITED KINGDOM

SLOVAKIA

UNITED KINGDOM

CROATIA

UNITED KINGDOM

SEAD SERBIA

VIETNAM

POLAND

THAILAND

UKRAINE

GREECE

SWITZERLAND

UK & IRE

NORDIC

SOUTH AFRICA

AUSTRIA

SOUTH AFRICA

NEPAL

SLOVENIA

UNITED KINGDOM

SPAIN

ITALY

SLOVENIA

PANAMA

SOUTH AFRICA

SINGAPORE

SWEDEN

GREECE

SLOVAKIA

ROMANIA

SERBIA MONTENEGRO

POLAND

SLOVAKIA

NIGERIA

RUSSIA

PAKISTAN

PHILIPPINES

SINGAPORE

PORTUGAL

ROMANIA

NETHERLANDS

ROMANIA

PORTUGAL

PHILIPPINES

ITALY

NETHERLANDS

MOROCCO

KAZAKHSTAN

LUXEMBURG

FRANCE

EGYPT

GERMANY

AUSTRALIA

SAUDI ARABIA

TUNISIA

SAUDI ARABIA

UNITED ARAB EMIRATES

ECUADOR

CHILE

IRELAND

AFGHANISTAN

KENYA

ISRAEL

LEBANON

BULGARIA

IRELAND

CAUCASUS

ALBANIA

POLAND

SINGAPORE

BALTICK

HUNGARY

SPAIN

Latest

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

Available in these regions:

ARGENTINA

CHILE

COSTA RICA

DOMINICA

JAMAICA

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:

UNITED KINGDOM

UZBEKISTAN CENTRAL ASIA

Latest

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

Available in these regions:

JAMAICA

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

Available in these regions:

INDONESIA

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