The specific Galaxy A21s SM-A217M U3 Firmware Download Package has a Stock ROM of Galaxy A21s SM-A217M U3 Security Patch Level 2020-08-01 (1 August 2020). This helps bypass FRP lock and revert from the root and custom ROM.
Samsung Galaxy A21s SM-A217M U3 Firmware – A217MUBU3ATG6
There are various reasons to flash “Stock Firmware on Galaxy A21s SM-A217M U3“. For instance, if your phone gets stuck on the logo and you need to remove the FRP lock from it.
The Advantages Of Stock ROM:
- Fix boot loop issue
- Update and Downgrade
- Unroot or Fix Bugs
- To solve the lag or stutter
- Fix software issues.
- Revert to stock firmware
Prerequisites:
- Supported Phone: Galaxy A21s SM-A217M U3
- Ensure it’s at least 50% charged.
- Laptop or PC.
- Backup Android Phone
- Download and install the Samsung USB Driver
- Download Odin’s Latest version
Galaxy A21s SM-A217M U3 Stock ROM Details:
| Model | SM-A217M Binary 3 U3, S3, Bit 3 |
| Region / Country | Brazil |
| Language | Multi-Language |
| Android version | Android 10 Q |
| Operator | Clean ZTO (without logo, operator apps) |
| PDA | A217MUBU3ATG6 |
| CSC | A217MOWO3ATG6 |
| Product code | ZTO |
| Build Date | 31 Jul 2020 |
| Security Patch Level | 2020-08-01 (1 August 2020) |
| Size | 3.1 GB |
| Download | Google Drive | Android File Host |
How To Install Galaxy A21s SM-A217M U3 Stock Firmware:
1: Download and Install the Samsung USB Driver on your computer. If a Samsung USB Driver is installed on your computer, then Skip this Step.
2: Download and extract the Galaxy A21s SM-A217M U3 Firmware files on your computer.
3: Now, Switch off your Smartphone.
4: Turn off the phone and boot into Download Mode.
Press and hold Volume Down, Home and Power button at the same time for 5-8 seconds until download mode is active.
5: A Warning Yellow Triangle Sign appears in Download mode. Press the Volume Up key to proceed.
6: Open Odin. Then, connect your phone to the pc.
7: Odin will detect the device and show the “Added message in the lower-left panel.”.
8: Click the PDA button and select the Firmware.tar file.
9: Now, click the Start button in Odin to begin the Flashing.
10: Flashing usually takes 30-50 seconds to complete on your Phone.
Once you spot the “Pass” message in Odin, you can unplug your device from the computer.
When your Galaxy A21s SM-A217M finally boots up, you should run your desired firmware.
To verify the installed firmware, go to Settings –> About Phone –> Software Information. Check the firmware number under “Baseband version.”
Disclaimer:
- Read and understand the Full Guide before flashing.”Galaxy A21s SM-A217M U3 Firmware“.
- Use these instructions at your own risk. We are not liable for any outcomes on your device due to following the information in this guide.
- Phone must have a 70–80% charge.
