Last Updated: May 25, 2026
This page provides the official Samsung Galaxy M20 SM-M205G firmware to restore your device to a working state. The download links, drivers, and step-by-step instructions for hard reset, FRP bypass, and IMEI repair are all included below.
Device: Samsung Galaxy M20 SM-M205G | Chipset: Samsung Exynos 7 Octa 7904 (14 nm) | Flash Tool: Odin
Android: Android 10, One UI 2 | File Type: .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin)
⚠ Warning: Flashing erases all data. Back up first.
Samsung Galaxy M20 SM-M205G Firmware (Flash File) Drivers, Tools & Guide
Using Odin to flash Samsung firmware is a standard procedure if you have the correct files prepared. This page contains the specific Samsung Galaxy M20 SM-M205G firmware, the appropriate Odin version, and the necessary steps to complete the process.
Before beginning the process, ensure you sign out of your Samsung account to prevent Knox triggering. Flashing the wrong package can also cause issues, so verify that the extracted files are named AP_*, BL_*, CP_*, and CSC_* (or HOME_CSC_*). If these file names are missing, the download is incorrect.
The Samsung Galaxy M20 SM-M205G firmware comes as a compressed ZIP file. Download and extract it using WinRAR or 7-Zip. Once extracted, you will see files named AP_*.tar.md5, BL_*.tar.md5, CP_*.tar.md5, and CSC_*.tar.md5 (or HOME_CSC_*.tar.md5). If these files are not present, you likely have the wrong firmware package for your device.
It is important to understand that flashing stock firmware wipes all user data. This action is intentional and resolves software issues including FRP lock, app crashes, slow performance, forgotten pattern locks, bootloops, Wi-Fi and Bluetooth issues, battery drain, and soft brick situations.
Hard Reset Samsung Galaxy M20 SM-M205G
To perform a hard reset on the Samsung Galaxy M20 SM-M205G without a computer, power off the device completely, then hold Volume Up + Power at the same time until the recovery menu appears. For older models with a physical Home button, use Volume Up + Home + Power. Use the volume keys to navigate to “Wipe Data/Factory Reset” and confirm with the Power button.
A hard reset erases all data and restores the Samsung Galaxy M20 SM-M205G to its original factory state. This fixes most software problems, slow performance, app crashes, forgotten screen locks, and bootloops. If the issue persists after a factory reset, a full firmware flash using Odin is covered in the following sections.
Samsung Galaxy M20 SM-M205G FRP Bypass
The most efficient method to bypass the FRP lock on a Samsung Galaxy M20 SM-M205G is using a free Android apps launcher that allows access to settings during the setup wizard. After flashing or performing a factory reset, you may see a Google account lock (FRP). Our free Android apps launcher is the fastest way to get past it. This is also why I always recommend removing your Google account before flashing, it avoids this problem entirely.
Why Do We Need Samsung Galaxy M20 SM-M205G Firmware?
Flashing the official Samsung Galaxy M20 SM-M205G firmware is necessary for resolving hardware and software faults on this device. Whether you are dealing with a boot issue or a software problem, flashing the official firmware can resolve it:
- Unlock your device if it has been locked or disabled.
- Update to the latest Android version supported by your phone.
- Fix startup loops, lagging, and freezing on your SM-M205G Galaxy M20.
- Resolve OTA update failures and battery drain issues.
- Restore the original Samsung stock ROM to keep your warranty valid.
- Recover your device when it only boots into recovery mode.
- Recover from KG lock or Knox-related issues after an incorrect or interrupted flash on your device.
Learn more about stock ROMs and why flashing works.
Choosing the Right Firmware Version
Verifying the correct firmware version is a critical step before starting the flashing process. Flashing the wrong firmware is a mistake that is difficult to recover from:
- Identify Your Exact Model Number: Go to Settings › About Phone and note your full model number (e.g. SM-M205G). The letter suffix matters, U/U1 = USA, W = Canada, N = Korea, B/F = International/Global. Flashing firmware built for a different variant can cause issues.
- Match the CSC (Region): The 3-letter region code in the firmware filename must match your device. Check Settings › About Phone › Software Information for your current CSC, or look at the Service Provider line in Download Mode. Common codes: XAA (US), BTU (UK), INS (India), SER (Russia).
- Check the Binary Level: Look at the version string in your current firmware (e.g.
XXU9BZDP, the number after the letters is the binary level). You cannot downgrade to a lower binary level. If your device is on Binary 9, only flash Binary 9 or higher firmware. - Confirm the Build Date: The last 4 characters of the PDA version encode the build date, first character is the year (A=2024, B=2025, C=2026), second is the month (A=Jan through L=Dec).
- Verify in Download Mode: Power off, hold Volume Down + Power to enter Download Mode. This screen shows your exact model, CSC, and current firmware version, use this to confirm before flashing.
Firmware Details for Samsung Galaxy M20 SM-M205G
Here is a quick overview of the official firmware specifications:
| Firmware Information | Details |
|---|---|
| Device Model | Samsung Galaxy M20 SM-M205G |
| Firmware Version | DXU1ASC1 |
| File Size | 10.5 MB to 2.67 GB |
| Android Version | Android 10, One UI 2 |
| Platform | Samsung Exynos 7 Octa 7904 (14 nm) |
| Release Date | Released 2019, February |
| Region | Global, Africa and Asia |
| File Type | .tar.md5 / ZIP (Contains AP, BL, CP, CSC files for Odin) |
Which Firmware Version Should I Download?
This is the question I get asked most often in the comments, so I put together a simple guide. Find your situation in the table and go straight to the right file:
| Your Situation | What I Recommend |
|---|---|
| Phone is completely dead or stuck on logo | DXU1ASC1, download this one. It is the latest Samsung Galaxy M20 SM-M205G 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 DXU1ASC1 first, then follow the IMEI repair guide. Do not skip the reflash. |
| DXU1ASC1 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 | DXU1ASC1, 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 M20 SM-M205G Firmware
You can download the official stock firmware for the Samsung Galaxy M20 SM-M205G from the links provided below. The latest available version is DXU1ASC1. After downloading, verify the file size matches the table above, a size mismatch usually means a partial or corrupt download, and flashing a corrupt file can cause more problems than it solves.
| Software Details | Download Link | Members Link |
|---|---|---|
|
File Name: M205GDXU1ASC1_M205GOLE1ASC1_XID_4File.zip Size: 2.4 GB | Download Link | Download Link2 |
| File Name: ROOT Samsung M20 SM-M205G-U3 Android 10 Q File.zip Size: 10.5 MB | Download Link | Download Link2 |
| File Name: COMBINATION_FAC_FA81_M205GDDU2ASH1_FACFA81_M205GFAC2ASH1.rar Size: 888.73 MB | Download Link | Download Link2 |
| File Name: M1AJQ.M205GDXU1ASC1 Size: 2.67 GB | Download Link | Download Link2 |
Only download firmware that is fully compatible with your exact device model. See the firmware selection guide above if you are not sure.
- Your model number is a variant of SM-M205G 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 7 Octa 7904 (14 nm). 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 M20 SM-M205G Firmware
Review this checklist before launching Odin for the Samsung Galaxy M20 SM-M205G. Two things that commonly cause problems with Samsung devices: a Samsung account that was not signed out before flashing, which can trigger KG lock, and a USB cable that works for charging but drops the connection mid-flash. Always use a proper data cable, not a charge-only cable.
- Back Up IMEI Numbers: Dial *#06# and write down both IMEI numbers now. You will need these if you need to restore your IMEI after flashing.
- Remove Google Accounts: Sign out of all Google accounts to prevent FRP lock after flashing.
- Remove Samsung Accounts: Sign out of all Samsung accounts to avoid KG lock.
- Back Up Your Data: Back up everything, photos, contacts, WhatsApp chats, important files. Flashing wipes the device completely.
- Charge Your Device: At least 50% battery. A device that powers off during a flash is very difficult to recover.
- USB Cable & PC: Use a proper data USB cable, not a charge-only cable, and a Windows computer with available USB ports.
- Install Required Drivers:
How to Install Firmware on Samsung Galaxy M20 SM-M205G
The installation process relies on Samsung’s Odin tool. A quick tip: keep “Auto Reboot” and “F. Reset Time” both checked in Odin, those two options together give you the cleanest flash result. If you are not sure which Odin version to use, check our Odin versions page. Some older Samsung devices work better with older Odin builds.
- Download and Extract:
- Download the correct firmware package from the links above.
- Extract the ZIP to a simple folder path, avoid paths with spaces or special characters, as some flash tools have trouble with them.
- Install the Listed Drivers:
- Confirm all drivers listed above are installed and that your PC has been restarted since installation. Skipping the restart is a common reason drivers do not work correctly.
- Load the Firmware File:
- In Odin, click “BL” and select the BL_*.tar.md5 file. Click “AP” and select the AP_*.tar.md5 file. Repeat for “CP” and “CSC”. Use HOME_CSC to keep data, or CSC for a clean flash.
- Connect Your Device:
- Enter Download Mode: Turn off your phone, then hold Volume Down + Power (add Home button on older models) until the warning screen appears. Press Volume Up to confirm and enter Download Mode.
- Connect your phone to your PC via USB. Odin should show “Added..” in the log area, this means your device is detected.
- Start Flashing:
- Click the “Start” button to begin.
- Do not disconnect, move the cable, or touch the device until the process is fully complete. Disconnecting mid-flash is how devices get bricked.
- Wait and Reboot:
- Once flashing finishes successfully, disconnect the device.
- Power on your device. The first boot will take longer than usual, give it up to 8 minutes.
Video Guide for Flashing
What to Expect After Flashing Samsung Galaxy M20 SM-M205G Firmware
Many users worry when they do not see expected behavior immediately after the flash completes. Here is what is completely normal after a successful Samsung Galaxy M20 SM-M205G firmware flash:
- How to know the flash was successful: Odin will show “PASS.” in green text at the top-left of the log area. If you see this, everything went fine.
- First boot takes 3 to 8 minutes, do not force-reboot the device. The operating system is setting itself up from scratch. Interrupting this is how devices end up in bootloops.
- The phone will feel warm during first boot, this is normal. It settles after a few minutes once the initial app setup is complete.
- All your apps are gone, this is expected. Reinstall them from the Play Store. If you had a Google account backup active, it will offer to restore your apps automatically during setup.
- Dial *#06# immediately after setup to check your IMEI. Do this before you insert a SIM card. If it shows “unknown” or “null”, follow the IMEI repair guide below before doing anything else.
- Be careful when re-adding your Google account, if you did not remove it before flashing, you may see an FRP prompt. Add it fresh during the setup wizard, not afterwards through Settings.
- Wi-Fi, Bluetooth, and mobile data should all work right after setup. If mobile data is not connecting, go to Settings › SIM and Network and re-enter your APN manually, the flash sometimes clears carrier APN settings.
- Stuck in a bootloop after first boot? Enter recovery mode and do a factory reset from there, see the hard reset guide above. This can happen occasionally and does not mean the firmware is wrong, it is usually a conflict with leftover data from the old install.
- Samsung Smart Switch: After flashing your Samsung Galaxy M20 SM-M205G firmware, Samsung Smart Switch may prompt you to install additional updates. Let it complete, this ensures your device has the latest security patches for your region.
Missing IMEI or Corrupt Baseband on Samsung Galaxy M20 SM-M205G After Flashing?
A missing IMEI on a Samsung device after flashing usually points to a corrupted EFS partition, this is the partition that stores your IMEI and carrier settings. Note that restoring an IMEI that is not your original number is illegal in most countries, so only do this if you are restoring the number the device had before you flashed. Tools like ChimeraTool or BFT can help with this. Check your local laws before proceeding.
Video Guide: How to repair IMEI
Common Issues When Flashing Samsung Galaxy M20 SM-M205G
- Odin Shows “FAIL” Instead of “PASS”:
- This is usually a mismatch between the firmware region or model and your device. Confirm your exact model number in Settings › About Phone before selecting the firmware. Even a single letter difference in the model code matters.
- Samsung Galaxy M20 SM-M205G Not Recognized by Odin:
- Reinstall the Samsung USB drivers. Make sure you are in Download Mode. Try a different USB cable, Odin can be sensitive to cable quality.
- KG Lock / Knox Triggered After Flashing:
- This happens when a Samsung account was still signed in before flashing, or when unofficial firmware was used. Always sign out of Samsung accounts before flashing. If KG lock is already active, a professional unlocking tool is generally needed.
- Boot Loop After Flashing:
- Enter recovery mode (Volume Up + Power) and perform a factory reset. This clears any leftover data from the previous firmware that may be causing the conflict.
Frequently Asked Questions
Q1: Will flashing the Samsung Galaxy M20 SM-M205G firmware erase my data?
A: Yes, flashing this firmware with Odin restores your device to factory state, including Android 10, One UI 2 default settings. All apps, photos, contacts, and accounts will be removed. Back up everything you need before you start. There is no way to recover data once the flash is complete.
Q2: Is this firmware compatible with other Samsung models?
A: No. This firmware is built specifically for the Samsung Galaxy M20 SM-M205G running on the Samsung Exynos 7 Octa 7904 (14 nm) chipset. Even the Galaxy M20 with a different letter suffix (for example, a different variant of SM-M205G) can have a completely different chipset inside. Flashing the wrong firmware can leave your phone in a state that is very difficult to recover from. Always check your exact model number in Settings › About Phone.
Q3: Can I downgrade from DXU1ASC1 to an older firmware version?
A: It is technically possible on some Exynos builds, but I do not recommend it. Downgrading can cause security issues and app compatibility problems on Android 10, One UI 2. If DXU1ASC1 is causing you trouble, leave a comment below, there is usually a better fix than rolling back.
Q4: What should I do if I encounter an FRP lock after flashing?
A: Use our free Android apps launcher. FRP lock on the Samsung Galaxy M20 SM-M205G activates when a Google account was still signed in before flashing. This is also why I always recommend signing out of your Google account before flashing, it avoids this issue entirely.
Q5: Are custom ROM options available for the Samsung Galaxy M20 SM-M205G?
A: This guide covers official Samsung stock firmware only. Custom ROM availability for the Samsung Galaxy M20 SM-M205G depends on whether the Samsung Exynos 7 Octa 7904 (14 nm) chipset has open-source kernel support. Check our Custom ROMs page or the XDA Developers forum for device-specific custom ROM threads.
Q6: My Samsung Galaxy M20 SM-M205G is not detected by Odin. What should I do?
A: Start with the drivers, reinstall the Samsung USB drivers, restart your PC, then try again. Switch to a USB 2.0 port if you are on USB 3.0, Samsung devices are more reliable on USB 2.0 ports. Disable your antivirus temporarily. If none of that works, leave a comment below with the exact error message and I will help you from there.
Q7: How do I enter recovery mode on my Samsung Galaxy M20 SM-M205G?
A: Power the device off completely, then hold Volume Up + Power at the same time until the recovery menu appears. For older Samsung models with a physical Home button, use Volume Up + Home + Power. The recovery menu will display the build number for your Samsung Galaxy M20 SM-M205G which you can use to verify your firmware version before flashing.
Q8: My IMEI shows “unknown” after flashing the Samsung Galaxy M20 SM-M205G. Is my phone permanently damaged?
A: No, it looks alarming, but it is fixable. Follow the IMEI repair guide in the troubleshooting section above. For Samsung devices, check for EFS partition corruption first. The important thing: do not insert a SIM card until the IMEI is restored.
Q9: How long does it take to flash Samsung Galaxy M20 SM-M205G firmware?
A: The actual flashing process usually takes between 3 and 10 minutes depending on the firmware size and your USB connection speed. The first boot after flashing takes longer, anywhere from 3 to 8 minutes. Do not interrupt the device during either stage. If the progress bar in Odin appears stuck, give it a few more minutes before assuming something went wrong.
Final Thoughts on Samsung Galaxy M20 SM-M205G Firmware
That is everything you need to safely flash the official Samsung Galaxy M20 SM-M205G firmware (DXU1ASC1) using Odin and get your device working again. If you followed each step, your phone should now be running on a clean build.
If something did not go as expected, a specific error, a step that is not working for your setup, leave a comment below with as much detail as you can: the exact error message, which step you are on, and what you have already tried. I read every comment and will help you work through it.
If this guide helped you, consider sharing it, it is the best way to help someone else who is dealing with the same problem.
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.
