Galaxy A16 5G

Download Samsung Firmware SM-A166U

Samsung Galaxy A16 5G

The latest firmware for Samsung Galaxy A16 5G (SM-A166U) is A166USQSADZI2 with Android 16, released on September 30, 2026 for 13 regions (CSC). Every official firmware build for SM-A166U, newest first: one row per build with all regions (CSC) that received it.

Latest build
A166USQSADZI2 Android 16 · 1 month ago
Builds
20 builds
Regions (CSC)
13 regions

Firmware builds for SM-A166U

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/A166USQSADZI2

SM-A166U update history

SM-A166U started on Android 14 and has received 2 major Android upgrades; it now runs Android 16. The newest build, A166USQSADZI2, was released on September 30, 2026 with the September 2026 security patch. That patch (SMR Sep-2026) fixes 80 vulnerabilities, 20 of them critical. Over the last 12 months SM-A166U received 9 builds, spread over 8 different months. Builds of this model reach 13 regions (CSC); USC (United States) usually gets a new build first (75% of recent builds). Samsung guarantees security updates for this model until October 26, 2032.

Device specifications

Display diagonal
17 cm (6.7")
Display resolution
1080 x 2340 pixels
RAM
8 GB
Rear camera resolution
50 MP
Rear camera type
Triple camera
Battery capacity
5000 mAh
Weight
200 g

Specifications of SM-A166B, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

Changelog for SM-A166U

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

One UI 8.5
Visual design

Fresh new look
One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

One UI 8.0 (Android 16)
Productivity

Check stock prices without unlocking
Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.

Easier file sharing with Quick Share
It's never been easier to send and receive files. Tap the Quick Share button in quick settings to get started. You can receive files while the Quick Share screen is open and send files to others directly from Quick Share.

Sticky notes
Add quick annotations on top o...

• Security
The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

Show 10 older builds
One UI 7.0 Upgrade (Android 15)
Bold new look

Visual enhancements
Enjoy a more sophisticated and unique look. One UI 7 introduces a stunning redesign to key components including buttons, menus, notifications and control bars, providing a more consistent visual experience with curves and circles. Beautiful new colors, soft animations, and an innovative blur effect that's unique to One UI make information hierarchy clearer and help you focus on important information.

Reimagined Home screen
Fr...

• Security

The device is protected with improved security.

These changes may vary depending on the model, country, or network operator of the customer environment.

• Security
The device is protected with improved security.

· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.

• The security of your device has been improved.

• Stability and reliability
Device behavior has been improved.
• Security
The device is protected with improved security.

• The security of your device has been improved.

• Security
The device is protected with improved security.

Similar Models

Frequently Asked Questions

What is the latest Android version for SM-A166U?

The newest firmware for SM-A166U runs Android 16: build A166USQSADZI2, released on September 30, 2026.

When did SM-A166U get its last update?

The latest build for SM-A166U, A166USQSADZI2, was released on September 30, 2026 (26 days ago).

How often does SM-A166U get updates?

Over the last 12 months SM-A166U received 9 builds, with at least one new build in 8 different months.

Is the firmware for SM-A166U official?

Yes, all firmware files for SM-A166U are 100% official, original, and obtained directly from Samsung servers.

How to flash Samsung SM-A166U using Odin?

To flash SM-A166U, 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-A166U?

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-A166U.