
Samsung Galaxy Z Fold4 SC55COMU1EYJ3 is an Android 16 firmware for Japan (DCM). It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build SC55COMS1DYGB: Android updated from Android 15 to Android 16; security patch 2025-10-01 instead of 2025-08-01. A newer build for SC-55C is available: SC55COMS1EZH2.
Bootloader binary 1. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.
Pick your region (CSC) to download the matching firmware package.
Wallpaper suggestions
Get help finding new wallpapers. Your phone will recommend the best photos from your Gallery in categories such as landscapes, cities, flowers, pets, and people.
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 of documents in Samsung Notes. There's no limit to the number of sticky notes you can add, and it's easy to remove them later without disturbing the original document.
Find downloads fast
You can now filter files based on the app that was used to download them. Works in the Downloaded and Recent views in My Files.
Multi-pane file browsing
It's easier to keep track of file paths when using My Files on a large screen. When you open a new folder, a new pane will be opened to show what's inside so you can easily get back to where you came from.
Redesigned Samsung Internet
Access the features you need quickly. The Samsung Internet menu has been optimized to make it easy to access the features you use most. You can also customize the layout to match your personal preferences.
Scientific calculator in portrait view
Use the scientific calculator without the need to rotate the screen. The scientific calculator now works in portrait view in addition to landscape.
Do more in DeX on connected displays
You can now add widgets to your Home screen when using DeX on a connected display as well as control settings for the mouse and on-screen keyboard.
Enhanced display support for DeX
The new Samsung DeX gives you more options when connected to an external monitor or TV. You can choose an optimized display resolution up to WQHD and rotate the display 90, 180, or 270 degrees.
Enhanced split screen view
While 2 apps are open in split screen view, you can push one app against the edge of the screen to keep it partially visible while giving most of your focus to the other app. Tap the smaller app any time to switch between them quickly.
New Reminder interface
The Reminder app has been redesigned with categories shown at the top of the screen, making it easier to see how many reminders are in each category with a quick glance. Custom categories can be hidden with a quick tap to free up more screen space. Tap one more time to make them appear again.
New sample reminders
Discover the power of reminders. Sample reminder templates are now available in the Reminder app. Explore these reminders to see what you can do to manage important tasks in your life.
Add reminders easily
It's never been easier to add new reminders. Just type your reminder into the box at the bottom of the screen. Suggestions will appear as you type that you can tap to save time. You can add checklists, locations, and pictures using the buttons below the text box. Or, if you don't want to type at all, tap the Mic icon for voice input.
Avoid interruption on days off
You now have the option of pausing reminder alerts on weekends and public holidays in Reminder settings.
Manage reminders in Calendar
You can easily create reminders in the Calendar app without opening the Reminder app. Whenever you tap the + button, you'll have the choice of adding an event or a reminder. You can also drag and drop reminders on your calendar to reschedule them.
Add events quickly
When you start adding an event in the quick add menu, you'll get suggestions for event names and times based on your past events. Just tap one of the suggestions to add an event without additional typing.
Avoid interruption on your days off
You now have the option of pausing calendar event alerts on weekends and public holidays in Calendar settings.
Running coach
Whether you're a beginner or an experienced runner, the new Running coach feature in Samsung Health provides personalized training programs and tips to help you run farther and faster while minimizing the risk of injury. Works with Galaxy Watch7 or higher.
Bedtime guidance
Get to sleep at the right time so you wake up feeling refreshed. The new Bedtime guidance feature analyzes your sleep data and recommends the best time to go to sleep each night.
Running challenges
In addition to step challenges, you can now challenge your friends to run. You can set a target distance and see who gets there the fastest or set a time limit and see who runs the farthest.
Check your antioxidant intake
The Antioxidant index (Labs) feature uses your Galaxy Watch to detect the level of carotenoids in your skin. Carotenoids are a type of antioxidant contained in fruits and vegetables that can help prevent physical aging. Works with Galaxy Watch8 and Galaxy Watch Ultra.
Food recording reminders
Stay on track to meet your calorie goals. You can now set reminders for recording your food intake in Samsung Health.
Track your vascular load
Use your Galaxy Watch to measure your vascular load, which is the amount of stress on your blood vessels. First, create a baseline measurement by wearing your watch while sleeping for at least 3 days, then you'll be able to see when your vascular load gets higher or lower over time. Works with Galaxy Watch8 and Galaxy Watch Ultra.
Swipe up or down to open quick controls
Access quick controls in Camera even quicker than before by swiping up or down anywhere in the preview area. In Camera settings, change the Swipe up/down option to open quick controls.
Enhanced Capture view
Use Capture view to take and review pictures quickly on the main screen. It's now easier to quickly scroll through the pictures you've taken, and you can set them as favorites without opening Gallery.
Quick access to Galaxy Buds settings
It's easier than ever before to control your Galaxy Buds. You can now adjust Buds settings directly from your phone's Settings without the need to open the Galaxy Wearable app.
Easily connect to Auracast broadcasts
Auracast allows you to broadcast audio from one device to multiple listening devices at the same time. It's now easier to connect to Auracast broadcasts by simply scanning a QR code. You can also generate a QR code to let others connect to your broadcast.
See calls on the screen
Call captions show what each person says on the screen in real time during calls. Follow the conversation on your screen to make sure you don’t miss anything.
Improved profile cards
It's easier to create and edit your profile card to get the perfect layout for your name and picture. After creating, you can share your profile card so other people can see it when you call them.
Review recorded calls in Contacts
It's now easier to review your past conversations. Calls you've recorded now appear on the contact history screen.
Enhanced Secure Folder
Keep sensitive apps and data in a separate, protected area of your phone. You can now set Secure Folder to close apps and prevent notifications when you lock it. You can also completely hide and encrypt your Secure Folder for maximum protection.
Stronger account security
Knox Matrix regularly scans devices signed in to your Samsung account for security risks. When a serious risk is found on a device, that device will be automatically signed out of your Samsung account to protect the security risk from spreading to your account and other devices. You can check the security status of your devices any time in Security and privacy settings.
Show or hide notification content while locked
The option to show or hide notification content while your phone is locked is now located in Notifications settings. Choose to show content for quick access to notifications without unlocking your phone, or choose to hide content to keep your notifications private and prevent others from seeing them.
Pinch and zoom with the Assistant menu
The Assistant menu now provides more ways to zoom in and out on the screen. In addition to dragging with one finger, you can now adjust the zoom level by pressing buttons on the screen.
Control mouse actions with your keyboard
If you can't or don't want to use a mouse, turn on Mouse keys in Accessibility settings to use your physical keyboard to move the mouse pointer, click, hold, and scroll.
Magnify your keyboard
You can now make the keys on the on-screen keyboard larger so they're easier to see and tap. Turn on Magnify keyboard while typing in Magnification settings to try it.
Easily pair Bluetooth hearing aids
You can now pair and connect your Bluetooth hearing aid devices directly on the Hearing aid support screen in Accessibility settings.
New preset routines
Check out the new preset routines for weather and other advanced conditions. Use them as they are, or customize them to meet your needs.
New routine actions
New actions are available for getting data from the Clock, Calendar, and Samsung Notes apps. After you get data, you can use it in other conditions or actions in your routine.
Enhanced multitasking with Google Gemini
Get help from Gemini while keeping other apps visible. Gemini now takes up less space on the screen and provides an option to easily switch to split-screen view.
Easily organize alarms
You can now add existing alarms to an alarm group by tapping the + button on the Alarm group screen. You can also add an alarm group to a widget on your Home screen so you can turn all of the alarms in the group on or off with a single tap.
Enhanced app notification settings
You can now choose the pop-up notification style for each app separately in the app’s notification settings.
Revamped weather visuals
The Weather app now provides more rich and realistic images to help you intuitively understand the current weather conditions.
Weather data provider
Weather data is now provided by The Weather Channel in all regions. Some location names may be different after the update.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Wallpaper suggestions
Get help finding new wallpapers. Your phone will recommend the best photos from your Gallery in categories such as landscapes, cities, flowers, pets, and people.
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 Quic...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
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...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Turn simple sketches into awesome images
Start with a simple drawing, choose your style, and let Galaxy AI transform it into a captivating work of art. Sketch to image is available in Samsung Notes, Photo Editor, Air command, Smart select, and the Edge panels.
Create unique portraits
With a wide variety of AI-generated portrait styles, you can create a whole new look for your own profile image in Contacts or someone else’s, or use Photo Editor to invent somethi...
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
・Device stability improvements, bug fixes.
・New and / or enhanced features.
・Further improvements to performance.
<note>
・Please back up your data before updating.
・After the software is updated, downgrading to the previous version is not available.
・Please update the applications after the software is updated.
・After the software is upgraded, Change Home Widget is removed from the widget list.
※You can continue to use the home widget you were using before the upgrade.
・Refer to this link t...