Galaxy S21 5G

Download Samsung Firmware SM-G991W

Samsung Galaxy S21 5G

The latest firmware for Samsung Galaxy S21 5G (SM-G991W) is G991WVLSJHZAA with Android 15, released on February 13, 2026 for 17 regions (CSC). Every official firmware build for SM-G991W, newest first: one row per build with all regions (CSC) that received it.

Latest build
G991WVLSJHZAA Android 15 · 8 months ago
Builds
52 builds
Regions (CSC)
19 regions

Firmware builds for SM-G991W

Each firmware build has its own page at https://samfirm.shop/build/{PDA}, where {PDA} is the build number from the list above. Example: https://samfirm.shop/build/G991WVLSJHZAA

SM-G991W update history

SM-G991W started on Android 11 and has received 4 major Android upgrades; it now runs Android 15. The newest build, G991WVLSJHZAA, was released on February 13, 2026. No new build has appeared for 8 months, so regular updates for this model have most likely ended.

Device specifications

Display diagonal
15.8 cm (6.2")
Display resolution
2400 x 1080 pixels
Display type
Dynamic AMOLED 2X
RAM
8 GB
Rear camera resolution
12 MP
Rear camera type
Triple camera
Battery capacity
4000 mAh
Weight
171 g

Specifications of SM-G991, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

Changelog for SM-G991W

One UI 4 Upgrade (Android 12)

One UI 4 brings you a wide array of new features and enhancements for your Galaxy devices. More intuitive, more fun, more secure, and easier than ever.

Check out the changes below.

Color palette

Customize your phone with unique colors based on your wallpaper. Your colors will be applied to menus, buttons, backgrounds, and apps throughout your phone.

Privacy

One UI 4 offers strong privacy protection to make sure your personal information doesn’t fall into the...

· The security of your device has been improved.

• Overall stability of your device has been improved.
• The security of your device has been improved.

• Overall device performance has been improved.

• The performance of Camera has been improved
• Overall device performance has been improved.
• The security of your device has been improved.

Show 5 older builds

• The performance of Camera has been improved
• Enhanced Quick Share
- Improve file sharing between Galaxy devices using Quick Share.
• The security of your device has been improved.

• The performance of Camera has been improved
• Overall device performance has been improved.
• The security of your device has been improved.

• The performance of Camera has been improved
• Wi-Fi connectivity and stability have been improved.
• The performance of Fingerprint recognition has been improved.
• Overall stability of functions improved.
• The security of your device has been improved.

Similar Models

Frequently Asked Questions

What is the latest Android version for SM-G991W?

The newest firmware for SM-G991W runs Android 15: build G991WVLSJHZAA, released on February 13, 2026.

When did SM-G991W get its last update?

The latest build for SM-G991W, G991WVLSJHZAA, was released on February 13, 2026 (8 months ago).

How often does SM-G991W get updates?

SM-G991W has had no new firmware for 8 months, so regular updates have most likely ended.

Is the firmware for SM-G991W official?

Yes, all firmware files for SM-G991W are 100% official, original, and obtained directly from Samsung servers.

How to flash Samsung SM-G991W using Odin?

To flash SM-G991W, you need to download the appropriate firmware, put your device into Download Mode, and use the Odin tool to load the BL, AP, CP, and CSC files.

Can I downgrade the Android version on SM-G991W?

Downgrading is only possible if the bootloader version (binary bit) of the old firmware matches the current one. Always check the binary version before flashing SM-G991W.