Samsung Galaxy A55 Gets Stable One UI 7 Update with A556SKSU4BYD9 Firmware

Samsung Rolls Out Stable One UI 7 Update to Galaxy A55 in South Korea

Samsung has officially released the Stable One UI 7 update based on Android 15 for the Galaxy A55, marking a significant milestone as it becomes the first non-flagship Galaxy device to receive the major firmware upgrade. With the rollout, the company has also closed the One UI 7 Beta Program for the A55, signaling that the software is ready for broader public use.

Samsung Galaxy A55 Stable One UI 7 Update A556SKSU4BYD9 South Korea

The update is currently rolling out in South Korea, starting with users who participated in the Beta Program. The firmware version A556SKSU4BYD9 marks a new chapter for Galaxy A55 owners, delivering a refreshed user experience packed with improvements in design, performance, and functionality.

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📲 A556SKSU4BYD9 Firmware Details

The stable One UI 7 build for the Galaxy A55 comes with the PDA version A556SKSU4BYD9, and the update is currently available only in South Korea. Samsung typically begins major firmware releases in its home country before gradually expanding to other markets in Europe, India, and Southeast Asia.

The size of the update is over 2GB, so it is recommended that users connect to a stable Wi-Fi network and ensure their battery is charged above 50% before proceeding with the installation.

🔍 Update Specifics:

• Device: Samsung Galaxy A55 (model SM-A556N)

• Region: South Korea

• Build Number: A556SKSU4BYD9

• Android Version: Android 15

• One UI Version: One UI 7.0

• Security Patch: Likely April or May 2025 (official patch level confirmation pending)

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🧪 Beta Program Officially Closed

With the rollout of the stable build, Samsung has also formally closed the One UI 7 Beta Program for the Galaxy A55. Testers who helped fine-tune the software during the beta phase have now transitioned to the stable firmware, ensuring a smooth shift for general users.

This closure also means users will no longer receive beta updates, and future updates will be part of the regular stable channel, including monthly security patches and minor feature enhancements.

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🎯 Why This Is a Big Deal for Galaxy A55 Owners

This release is noteworthy because the Galaxy A55 is not a flagship device. Usually, major updates like One UI 7 are reserved first for Samsung’s premium S-series and Z-series lineups. By prioritizing the Galaxy A55, Samsung has shown a clear commitment to enhancing the user experience across mid-range devices too.

It also sets a strong precedent for the rest of the Galaxy A-series lineup. Devices like the Galaxy A35, A34, and A14 could potentially follow suit in the coming weeks or months.

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🧰 What’s New in One UI 7 for Galaxy A55?

While Samsung hasn't published a Galaxy A55-specific changelog yet, based on the One UI 7 features already rolled out for flagship devices, users can expect a comprehensive package of improvements and new tools.

Here are the expected One UI 7 features for Galaxy A55 users:

🌙 1. Refreshed UI and System Design

One UI 7 brings subtle yet meaningful design changes:

• Updated Quick Panel layout

• Smoother transition animations

• Improved dark mode contrast

• More uniform app icons and system fonts

🧠 2. AI-Driven Smart Suggestions

Samsung is pushing more AI enhancements into its software:

• Context-aware suggestions in Messages, Calendar, and Samsung Keyboard

• Smart Call suggestions based on frequent contacts and call patterns

• Camera scene optimizer improvements

🧹 3. Performance and Optimization

One UI 7 is based on Android 15, which introduces under-the-hood changes for:

• Better memory management

• More efficient battery consumption

• Smoother app switching and multitasking

🔒 4. Privacy and Security Upgrades

• Enhanced permission auto-reset for unused apps

• More transparency in data access requests

• Simplified privacy dashboard

• Expanded App Privacy Report

📸 5. Camera and Gallery Enhancements

• Pro Mode now retains last used settings

• Gallery gets improved object eraser tools

• AI-based image remastering now supports higher resolution photos

📅 6. Samsung Calendar and Reminder Upgrades

• Smart categorization of tasks

• Better sync between Samsung Notes and Calendar

• Reminder notifications with actionable buttons

💬 7. Samsung Messages and Keyboard Improvements

• Predictive emoji and GIF suggestions

• Advanced grammar correction powered by Samsung AI

• Auto-translate enhancements for multiple languages

⚙️ 8. More Control in Settings

• Redesigned Battery and Device Care section

• Customizable lock screen clocks and fonts

• Control center now includes more shortcuts

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🌍 Expected Rollout in Other Countries

Following the initial release in South Korea, Samsung is expected to bring the update to other markets like:

• India

• Germany

• UK

• Italy

• Philippines

• Vietnam

• Indonesia

• Malaysia

If you live outside South Korea and own a Galaxy A55, keep an eye on the Settings > Software Update > Download and Install section in the coming weeks.

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🛠️ How to Check and Install the Update

Galaxy A55 owners can manually check for the One UI 7 update:

1. Open Settings

2. Scroll to Software Update

3. Tap on Download and Install

4. If the update is available, follow the prompts to install

For those not seeing the update yet, patience is key. Rollouts are staged and may take several days or weeks to reach all devices depending on region and carrier.

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💡 Tips Before Updating

Before you install the update, consider these tips:

• Backup your important data using Samsung Smart Switch

• Charge your phone to at least 50%

• Connect to a stable Wi-Fi network

• Ensure at least 5GB free storage is available

• Avoid installing third-party system optimizers after the update

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📉 What About Bugs or Issues?

While stable builds are generally free of critical bugs, minor issues can still occur, especially right after a major update. Here’s what you can do:

• Wipe cache partition via Recovery Mode to fix lag or heating

• Factory reset only if major problems persist (after backing up data)

• Report bugs using the Samsung Members app

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📌 Summary: Galaxy A55 One UI 7 Update

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📝 Final Thoughts

Samsung’s decision to bring the Stable One UI 7 update to the Galaxy A55 ahead of many other devices is a major win for mid-range phone users. The A556SKSU4BYD9 firmware brings the latest Android 15 core along with Samsung’s own innovations in AI, privacy, performance, and design.

It reflects Samsung’s strong software commitment even beyond its flagship lineup. Galaxy A55 users in South Korea can now enjoy the power of One UI 7, and soon, users in other parts of the world will join in.

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