Last Updated: June 2, 2026
You can repair software issues on your smartwatch using the official Samsung Galaxy Watch3 SM-R845F firmware. This page contains every file and instruction required, including Odin tools, USB drivers, and step-by-step guides for factory resets and FRP removal.
Device: Samsung Galaxy Watch3 SM-R845F | Chipset: Samsung Exynos 9110 (10 nm) Dual-core 1.15 GHz Cortex-A53 | Flash Tool: Odin
Android: Tizen OS 5.5 | File Type: .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin)
⚠ Warning: Flashing erases all data. Back up first.
Samsung Galaxy Watch3 SM-R845F Firmware (Flash File) Drivers, Tools & Guide
Installing the official Samsung Galaxy Watch3 SM-R845F firmware requires the correct Odin version, official drivers, and the exact flash files provided on this page. Flashing a smartwatch with Odin is a straightforward process when you have the right components. This guide provides the exact software package and reliable instructions to get your device running properly.
Before starting the installation, ensure you sign out of any active Samsung accounts on the watch. Skipping this step often triggers Knox security, which adds unnecessary complications. Official Samsung packages use a .tar.md5 format. Once you extract the main archive, you will see specific files labeled AP_, BL_, CP_, and CSC_ (or HOME_CSC_). If these files are missing, the package is incorrect for your device.
The firmware downloads as a compressed ZIP folder. You can extract it using WinRAR or 7-Zip. Inside the folder, look for components like AP_*.tar.md5, BL_*.tar.md5, CP_*.tar.md5, and CSC_*.tar.md5 (or HOME_CSC_*.tar.md5). Missing these specific files indicates you have downloaded the wrong package.
Flashing stock software intentionally erases all user data to resolve severe software glitches. This process fixes persistent FRP locks, system crashes, forgotten passwords, devices stuck on the logo, connectivity bugs, rapid battery drain, and soft-brick conditions.
Hard Reset Samsung Galaxy Watch3 SM-R845F
You can factory reset the Samsung Galaxy Watch3 SM-R845F without a computer by powering it off and holding Volume Up + Power until the recovery menu loads. Use the volume keys to highlight “Wipe Data/Factory Reset” and press the Power button to confirm your selection.
A hard reset wipes all personal data and returns the smartwatch to its factory settings. This resolves common bugs like sluggish performance, system freezes, and continuous bootloops. If problems remain after the reset, a complete firmware installation using Odin is the next logical step.
Samsung Galaxy Watch3 SM-R845F FRP Bypass
The most effective method to bypass FRP on the Samsung Galaxy Watch3 SM-R845F involves using a free Android apps launcher to access settings during the initial setup. A Google account lock (FRP) frequently appears after a factory reset or a fresh flash.
You can use our free Android apps launcher to quickly navigate past this lock. Removing your Google account before wiping the device is always the best practice to prevent this situation entirely.
Why Do We Need Samsung Galaxy Watch3 SM-R845F Firmware?
Flashing the official Samsung Galaxy Watch3 SM-R845F firmware resolves critical software issues, updates the operating system, and restores the device to its original factory state. Samsung smartwatches rely on Odin for flashing, regardless of the internal processor. Installing the official software fixes a wide range of operational problems:
- Unlock a disabled or locked smartwatch.
- Upgrade to the most recent supported Tizen OS version.
- Eliminate freezing, lagging, and continuous bootloops on your SM-R845F Galaxy Watch3.
- Fix battery drain and failed over-the-air (OTA) updates.
- Reinstall the original stock ROM to maintain warranty validity.
- Recover a watch that only boots into the recovery environment.
- Fix Knox or KG lock errors caused by an interrupted or incorrect flash.
Learn more about stock ROMs and why flashing works.
Choosing the Right Firmware Version
Selecting the correct firmware version requires matching your exact model number, region code, and binary level before opening Odin. Flashing an incompatible file is a serious mistake. Follow these steps to verify your download:
- Identify Your Exact Model Number: Navigate to Settings › About Phone and verify your full model number (e.g. SM-R845F). The letter suffix indicates the region, U/U1 = USA, W = Canada, N = Korea, B/F = International/Global. Installing firmware meant for a different variant causes severe errors.
- Match the CSC (Region): The 3-letter region code in the file name must align with your watch. Check your current CSC under Settings › About Phone › Software Information or view the Service Provider line in Download Mode. Common codes include XAA (US), BTU (UK), INS (India), and SER (Russia).
- Check the Binary Level: Review your current firmware version string (e.g.
XXU9BZDP, the number after the letters represents the binary level). You cannot downgrade past this number. A device on Binary 9 only accepts Binary 9 or higher. - Confirm the Build Date: The final 4 characters of the PDA version indicate the build date. The first character is the year (A=2024, B=2025, C=2026), and the second is the month (A=Jan through L=Dec).
- Verify in Download Mode: Power down the watch and hold Volume Down + Power to access Download Mode. This screen displays your exact model, CSC, and current software version for final confirmation.
Firmware Details for Samsung Galaxy Watch3 SM-R845F
The official Samsung Galaxy Watch3 SM-R845F firmware runs on Tizen OS 5.5 and is built for the Exynos 9110 chipset. Review the official software specifications below:
| Firmware Information | Details |
|---|---|
| Device Model | Samsung Galaxy Watch3 SM-R845F |
| Firmware Version | N/A |
| File Size | N/A |
| Android Version | Tizen OS 5.5 |
| Platform | Samsung Exynos 9110 (10 nm) Dual-core 1.15 GHz Cortex-A53 |
| Release Date | Released 2020, August 06 |
| Region | Global, Africa and Asia |
| File Type | .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin) |
Which Firmware Version Should I Download?
You should download the Samsung Galaxy Watch3 SM-R845F firmware version that matches your specific device model, binary level, and current region code. Readers often ask which file to choose. Use the table below to find your specific scenario and locate the correct download:
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | the latest version, download this one. It is the latest Samsung Galaxy Watch3 SM-R845F firmware available. |
| FRP / Google account lock only | See the FRP bypass guide above, you likely do not need the full firmware for this. |
| Not sure which region/CSC to download | Check Settings › About Phone › Software Information for your current CSC, or enter Download Mode (Volume Down + Power), it shows the CSC on screen. Match the 3-letter code (e.g. XAA, BTU, INS) to the firmware filename. |
| Phone slow after a recent OTA update | Try the next older version, sometimes the latest OTA introduces new bugs and an older build runs better. Make sure the binary level is the same or higher than what your device currently has. |
| IMEI missing after a previous flash | Re-flash the latest version first, then follow the IMEI repair guide. Do not skip the reflash. |
| the latest version failed with a flash error | Try the next older version instead and double-check your AP/BL/CP/CSC file assignments in Odin before assuming the firmware is the problem. |
| Restoring to factory / warranty repair | the latest version, clean state, fresh start. |
To tell which Samsung firmware is newer, look at the last 4 characters of the PDA version string (e.g. S938BXXU9CZDP). The first character is the year (A=2024, B=2025, C=2026), the second is the month (A=Jan, B=Feb… L=Dec, Z=final stable), and the last two are the revision (0-9 then A-Z, where Z is highest). But before comparing dates, always check the binary level: the digit just before the date code (e.g. XXU9CZDP = Binary 9). You cannot downgrade to a lower binary level. If your device is on Binary 9, only flash Binary 9 or higher. Also make sure the 3-letter CSC code in the firmware matches your device region.
Download Samsung Galaxy Watch3 SM-R845F Firmware
The official stock software for the Samsung Galaxy Watch3 SM-R845F is available below, with the latest version being the latest version. After downloading, check that the file size matches the specifications table. A mismatch usually points to a corrupted or incomplete download, which can cause serious errors during installation.
Always ensure the software matches your exact smartwatch model. See the firmware selection guide above if you are not sure.
- Your model number is a variant of SM-R845F with a different letter suffix. Check About Phone carefully, one letter difference can cause a failed or broken flash.
- Your chipset differs from Samsung Exynos 9110 (10 nm) Dual-core 1.15 GHz Cortex-A53. Confirm in recovery mode before proceeding.
- You downloaded the file from a source other than this page.
- The file size differs significantly from the sizes listed in the table above, a size mismatch usually means a partial download, which will fail mid-flash.
Prerequisites for Samsung Galaxy Watch3 SM-R845F Firmware
Preparing to install the Samsung Galaxy Watch3 SM-R845F firmware requires backing up your data, removing accounts, and installing the correct USB drivers. Review this checklist before launching Odin. Two common issues disrupt Samsung flashes: failing to sign out of Samsung accounts (which triggers KG lock) and using low-quality USB cables that disconnect mid-flash. Always rely on a high-quality data cable.
- Back Up IMEI Numbers: Dial *#06# and record your IMEI numbers. Keep these safe in case you need to restore your baseband later.
- Remove Google Accounts: Sign out of all Google profiles to prevent FRP lock.
- Remove Samsung Accounts: Sign out of Samsung accounts to bypass KG lock.
- Back Up Your Data: Save your photos, contacts, and important files externally. The installation will wipe the smartwatch entirely.
- Charge Your Device: Ensure the battery is at least 50%. A power loss during installation is difficult to fix.
- USB Cable & PC: Connect to a Windows computer using a reliable data USB cable.
- Install Required Drivers:
How to Install Firmware on Samsung Galaxy Watch3 SM-R845F
You can install the Samsung Galaxy Watch3 SM-R845F firmware by using Odin to flash the AP, BL, CP, and CSC files while the watch is in Download Mode. Leave “Auto Reboot” and “F. Reset Time” checked in Odin for the best results. If you need help selecting an Odin version, visit our Odin versions page. Certain older Samsung watches perform better with specific Odin builds.
- Download and Extract:
- Save the correct software package from the links above.
- Unzip the folder to a simple directory path without spaces or special characters to prevent tool errors.
- Install the Listed Drivers:
- Ensure all drivers listed above are installed and restart your computer. Skipping the restart often causes driver failures.
- Load the Firmware File:
- In Odin, click “BL” and select the BL_*.tar.md5 file. Click “AP” and choose the AP_*.tar.md5 file. Do the same for “CP” and “CSC”. Select HOME_CSC to retain data, or CSC for a complete wipe.
- Connect Your Device:
- Access Download Mode: Turn the watch off, then hold Volume Down + Power until the warning screen loads. Press Volume Up to enter Download Mode.
- Plug the watch into your PC. Odin should display “Added..” in the log, confirming a successful connection.
- Start Flashing:
- Click “Start” to initiate the process.
- Leave the watch completely untouched until the process finishes. Unplugging the device now causes permanent damage.
- Wait and Reboot:
- Unplug the watch once the installation succeeds.
- Turn the device on. The initial startup takes up to 8 minutes.
Video Guide for Flashing
What to Expect After Flashing Samsung Galaxy Watch3 SM-R845F Firmware
After flashing the Samsung Galaxy Watch3 SM-R845F firmware, the device will take several minutes to boot, run warmer than usual, and wipe all previous data. Many users assume something went wrong during this phase, but these behaviors are completely normal:
- How to know the flash was successful: A green “PASS.” message will appear in the top-left corner of the Odin log.
- First boot takes 3 to 8 minutes, allow the device time to configure the operating system. Forcing a restart here can cause a bootloop.
- The phone will feel warm during first boot, this heat is normal and will subside once the initial setup finishes.
- All your apps are gone, a clean flash removes everything. You can reinstall applications via the Play Store or restore them from a previous Google backup.
- Dial *#06# immediately after setup to verify your IMEI status. If the screen displays “unknown” or “null”, consult the IMEI repair guide before inserting a SIM card.
- Be careful when re-adding your Google account, adding it during the setup wizard prevents FRP prompts if you forgot to remove it prior to flashing.
- Wi-Fi, Bluetooth, and mobile data should function immediately. If mobile data fails, navigate to Settings › SIM and Network to manually input your APN details.
- Stuck in a bootloop after first boot? Access recovery mode and execute a factory reset, refer to the hard reset guide above. This usually clears leftover files conflicting with the new system.
- Samsung Smart Switch: Smart Switch might request additional updates after the installation. Allow it to update to secure the latest regional patches for your Samsung Galaxy Watch3 SM-R845F.
Missing IMEI or Corrupt Baseband on Samsung Galaxy Watch3 SM-R845F After Flashing?
A missing IMEI on the Samsung Galaxy Watch3 SM-R845F typically indicates a corrupted EFS partition that requires specific repair tools to restore. The EFS partition holds your IMEI and network data. Restoring an IMEI that does not belong to your original device is illegal in many regions, so only restore your original numbers. Software like ChimeraTool or BFT can fix this issue. Verify your local regulations before proceeding.
Video Guide: How to repair IMEI
Common Issues When Flashing Samsung Galaxy Watch3 SM-R845F
Common issues when flashing the Samsung Galaxy Watch3 SM-R845F include Odin failures, driver connection drops, and post-flash bootloops. Here are the solutions to the most frequent problems:
- Odin Shows “FAIL” Instead of “PASS”:
- This error generally means the software region or model does not match your watch. Double-check your exact model number under Settings › About Phone. A single letter difference will cause a failure.
- Samsung Galaxy Watch3 SM-R845F Not Recognized by Odin:
- Install the Samsung USB drivers again and ensure the watch is in Download Mode. Replacing the USB cable often resolves detection issues.
- KG Lock / Knox Triggered After Flashing:
- This security measure activates when a Samsung account remains logged in or unofficial software is applied. Always log out of accounts before flashing. Resolving an active KG lock usually requires professional tools.
- Boot Loop After Flashing:
- Open recovery mode (Volume Up + Power) and perform a factory reset to clear conflicting data from the previous installation.
Frequently Asked Questions
Q1: Will flashing the Samsung Galaxy Watch3 SM-R845F firmware erase my data?
A: Yes, installing this software with Odin completely wipes the device and restores the default Tizen OS 5.5 settings. All photos, applications, contacts, and accounts will disappear. Create a backup beforehand, as data recovery is impossible after the process finishes.
Q2: Is this firmware compatible with other Samsung models?
A: No, this package is designed exclusively for the Samsung Galaxy Watch3 SM-R845F using the Samsung Exynos 9110 (10 nm) Dual-core 1.15 GHz Cortex-A53 processor. Even similar variants of SM-R845F might use different internal hardware. Installing incompatible software can ruin the device. Verify your exact model number first.
Q3: Can I downgrade from the latest version to an older firmware version?
A: While sometimes possible on Exynos models, downgrading is generally discouraged. Rolling back can create security vulnerabilities and app instability on Tizen OS 5.5. If the newest update causes problems, leave a comment below to find a better solution.
Q4: What should I do if I encounter an FRP lock after flashing?
A: You can bypass it using our free Android apps launcher. This lock appears when a Google account remains active before a flash. Removing your account beforehand is the easiest way to prevent it.
Q5: Are custom ROM options available for the Samsung Galaxy Watch3 SM-R845F?
A: This guide focuses entirely on official Samsung stock software. Custom ROM availability for the Samsung Galaxy Watch3 SM-R845F depends on open-source kernel support for the Samsung Exynos 9110 (10 nm) Dual-core 1.15 GHz Cortex-A53. Visit our Custom ROMs page or the XDA Developers forum for specific development threads.
Q6: My Samsung Galaxy Watch3 SM-R845F is not detected by Odin. What should I do?
A: Begin by reinstalling the Samsung USB drivers and restarting your computer. Try connecting to a USB 2.0 port instead of USB 3.0, as Samsung devices respond better to the older standard. Temporarily disable your antivirus. If the problem persists, leave a comment with the specific error code.
Q7: How do I enter recovery mode on my Samsung Galaxy Watch3 SM-R845F?
A: Turn the watch off, then press and hold Volume Up + Power until the menu appears. Older models with a physical Home button require Volume Up + Home + Power. The recovery screen displays the build number, allowing you to verify the current software version.
Q8: My IMEI shows “unknown” after flashing the Samsung Galaxy Watch3 SM-R845F. Is my phone permanently damaged?
A: No, the hardware is fine. This is a software issue that you can resolve by following the IMEI repair guide above. Check the EFS partition for corruption first. Do not insert a SIM card until the original number is restored.
Q9: How long does it take to flash Samsung Galaxy Watch3 SM-R845F firmware?
A: Odin typically completes the installation in 3 to 10 minutes, depending on file size and connection speed. The initial reboot requires an additional 3 to 8 minutes. Never interrupt the watch during either phase. If the progress bar stalls, wait a few extra minutes before taking action.
Final Thoughts on Samsung Galaxy Watch3 SM-R845F Firmware
Following these instructions will successfully install the official Samsung Galaxy Watch3 SM-R845F firmware and restore normal functionality to your smartwatch. If you completed every step accurately, your watch should now operate on a clean, stable build.
If you encounter an error or a step fails, leave a detailed comment below. Include the exact error message, your current step, and the troubleshooting methods you have already attempted. I monitor the comments and will provide assistance.
Sharing this guide helps others resolve their smartwatch issues quickly.
Browse all Samsung firmware downloads for more devices.
Disclaimer: Flashing stock firmware is performed at your own risk. Follow the instructions on this page carefully. I cannot be held responsible for any damage to your device, but I will always try to help if something goes wrong.
