Galaxy S21 5G SM-G991U1 Binary 1 Firmware

The specific Galaxy S21 5G SM-G991U1 U1 Firmware Download Package has a Stock ROM of Galaxy S21 5G SM-G991U1 U1. This helps you to bypass the FRP lock and revert from the root and custom ROM.

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Samsung Galaxy S21 5G SM-G991U1 G991U1UEU 1 ATLI_G991U1OYM1ATLI_ACG_11.0

There are various reasons to flash “Stock Firmware on Galaxy S21 5G SM-G991U1 U1“. 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:

Galaxy S21 5G SM-G991U1 U1 Stock ROM Details:

SM-G991U1 G991U1UEU 1 ATLI_G991U1OYM1ATLI_ACG_11.0

Model: SM-G991U1 Binary 1, U1, S1, Bit 1
Language: Multi-Language
Android version: Android 11 R
Operator / Carrier: Clean (without logo, operator apps)
PDA: G991U1UEU1ATLI
CSC: G991U1OYM1ATLI
Size: 6.1 GB
[quads id=2]
One Drive Google Drive GD2

How To Install Galaxy S21 5G SM-G991U1 U1 Stock Firmware:

1: Download and Install the Samsung USB Driver on your computer.

2: Download and extract the Galaxy S21 5G SM-G991U1 U1 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: In the Download mode, you can see a Warning Yellow Triangle Sign. In this situation, you must press the Volume Up key to continue.

6: Open Odin. Then, connect your phone to the pc.

7: After connecting the smartphone to the computer, Odin will automatically recognize the device and display 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 S21 5G SM-G991U1 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 S21 5G SM-G991U1 U1 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.