Samsung Resumes One UI 7 Rollout for Galaxy S24 Series with BYD9 Build

Naveen Thakur
17 Apr, 2025

Samsung Resumes One UI 7 Rollout for Galaxy S24 Series with BYD9 Build: Lock Screen Bug Finally Fixed

Samsung has officially resumed the rollout of its much-anticipated One UI 7 update for the Galaxy S24 series, after a brief suspension caused by serious lock screen bugs. The new firmware carries build number BYD9, and as of now, it is live in South Korea. This marks a significant milestone for Galaxy S24, S24+, and S24 Ultra users who have been eagerly awaiting a more stable and refined One UI 7 experience.

Samsung Galaxy S24 receives new BYD9 One UI 7 update in South Korea
Galaxy S24 Series gets refined One UI 7 update BYD9 with bug fixes

📌 What’s New with the BYD9 One UI 7 Update?

The BYD9 firmware build is not just a minor patch—it’s a refined and improved version of the initial One UI 7 stable release. Samsung has taken quick action to address the most pressing issue users were facing—the lock screen bug, which rendered some phones temporarily inaccessible after the update.

🔧 Key Fixes in the BYD9 Update

  • ✅ Lock Screen Bug Fix: This was the most critical issue, especially for Exynos Galaxy S24 models in South Korea. Devices would get stuck or fail to unlock, causing panic among users.

  • ✅ Stability Improvements: The new build ensures improved UI fluidity, reduced lag, and a smoother user experience across the board.

  • ✅ Performance Enhancements: Several under-the-hood optimizations have been implemented to make multitasking more efficient and reduce battery drain.

  • ✅ Security Patches: The BYD9 build includes the latest April 2025 security patch for better protection.

While Samsung has not shared a detailed changelog publicly, user feedback from South Korea confirms that this update feels more responsive, with improved animations and touch response.

🌍 Why Was the Original Rollout Suspended?

To recall, Samsung had started rolling out the stable One UI 7.0 update based on Android 15 to the Galaxy S24, S24+, and S24 Ultra earlier this month. However, within a couple of days, the firmware disappeared from Samsung’s servers.



❌ Affected Devices and Regions

  • South Korea (Exynos models) – First reports of lock screen issues appeared.

  • 🌐 Global Suspension – The problem led to a temporary halt in the rollout across all regions, including markets like Europe, India, and North America.

  • 📱 Also Affected: Galaxy Z Flip 6 and Z Fold 6 – These devices were also pulled from the update queue for safety.

Samsung responded quickly to the issue by stopping further updates and launching an internal investigation, which has now led to the new BYD9 build.

📣 A Message to Fellow Galaxy Users: Disappointment and Hope

As a Galaxy S24 Ultra user, the sudden disappearance of the long-awaited One UI 7 update left me feeling disappointed. After months of beta testing and teasers, the stable version was expected to be a smooth transition. Instead, we faced bugs and uncertainty.

But to be fair, Samsung deserves some credit here. Compared to how other OEMs handle post-launch issues, Samsung:

  • 🚀 Responded quickly

  • 🧪 Launched an internal bug fix task force

  • 🔁 Resumed rollout within days

This swift turnaround is encouraging, and it shows Samsung’s commitment to delivering a polished software experience.

📲 How to Manually Check for the New BYD9 One UI 7 Update

If you own a Galaxy S24, S24+, or S24 Ultra, your phone may already be eligible for the new BYD9 One UI 7 firmware. Since update notifications often arrive late, it’s better to check manually.

🔍 Steps to Manually Check for the Update:

  1. Open Settings on your device.

  2. Scroll down and tap on Software update.

  3. Tap on Download and install.

  4. Your phone will check for the latest update and prompt you to install it if available.

⚠️ Note: If you're not in South Korea, the update may not show up yet. Samsung is rolling it out gradually to other regions over the next few days.

🌐 When Will Other Markets Get the Update?

While the update has resumed only in South Korea as of now, based on Samsung’s rollout history, it’s expected to reach other regions within a week or so.

📅 Expected Timeline (Based on Previous Rollouts)

  • India: Likely between April 19-22

  • Europe: April 20-23

  • USA (Unlocked Models): April 22-24

  • 🌏 Other Asian Regions: Gradual rollout from April 18 onward

Once the update reaches these regions, carriers will conduct their internal testing before releasing it for carrier-locked devices, which may cause slight delays.

⚙️ What to Expect After Updating to One UI 7

Apart from the bug fixes and security patches, One UI 7 based on Android 15 brings some exciting features to your Galaxy device.

✨ Top Features of One UI 7:

  • 🧩 Lockscreen Customization Enhancements

  • 🪄 AI-powered Photo Editing

  • 🎯 Smarter Bixby Routines

  • 🔐 Advanced Privacy Dashboard

  • 🔋 Optimized Battery Health Management

  • 🌗 Improved Dark Mode and Always-On Display

  • 🗃️ Stackable Widgets & Refined Home Screen

The UI design is also more fluid, animations are faster, and the overall responsiveness feels improved, especially on the high-refresh-rate displays of the Galaxy S24 Ultra.

🔁 Tips Before You Update to BYD9

Here are some best practices to ensure your update experience goes smoothly:

✅ Backup Your Data

Use Samsung Cloud or Smart Switch to back up your important files and settings.

✅ Clear Cache Partition

Boot into Recovery Mode and clear the cache partition after updating. This can help eliminate post-update lag.

✅ Ensure Minimum 50% Battery

Your phone must have enough charge or be plugged in during the update process.

🗣️ User Feedback from South Korea

Early adopters from South Korea who installed the BYD9 update have reported:

  • 📱 Faster unlocking

  • ⚡ Better battery management

  • 🎮 Improved gaming performance

  • 🧊 Cooler thermals under heavy load

  • 🐛 No major bugs so far

This suggests that the BYD9 build is a stable and reliable release, addressing the critical issues users faced with the previous build.

📌 Conclusion: Samsung's Recovery After a Rocky Start

Samsung’s decision to pause the rollout, fix the lock screen bug, and resume updates with the BYD9 build reflects a mature software update policy. While the initial bug was unfortunate, the quick fix and transparent approach deserve acknowledgment.

For Galaxy S24 series users, this means you can now safely update to One UI 7 and enjoy the latest features and improvements. If you haven’t received the update yet, don’t worry—it’s on the way.

🟢 Final Verdict:

Install the BYD9 update as soon as it's available for your device. It’s the polished version of One UI 7 we were all hoping for!

📌 Stay Tuned!
We’ll continue to monitor the rollout and post region-wise availability. Bookmark this blog or follow us for real-time Samsung software updates!


Next Post Previous Post
No Comment
Add Comment
comment url