How to use SUT L3 Tool to Flash NB0 Firmware

Updated on October 1, 2019

These are the instructions on how to use SUT L3 Tool to flash NB0 stock firmware on any Android Device.

Requirements: Your Android device should have at least 20-30 percent of battery to perform the Flashing Process.

How to use SUT L3 Tool to flash NB0 firmware

Step 1: Download and extract SUTL3 Tool and Drivers. After Extracting you will be able to see the following files:

SUT L3 Files

Step 2: Install SUTL3 Tool on your computer.

SUT L3 Setup

Step 3: Power Off your Android Device.

Power Off Android Device

Step 4: Download the Stock Rom (nb0 or ffu) that you want to Flash on your Android Device and extract it on your Computer.


Step 5: Now, Open SUTL3 Tool (you have installed this in Step#3) on Your Computer and Click on Next Button to Continue.

SUT L3 Shortcut SUT L3 Tool Launched

Step 6: Once SUT L3 Tool is launched, Click on […] Button and locate the firmware (should be .nb0 or .ffu extension).

SUT L3 Tool Locate Firmware SUT L3 Firmware

Step 7: Once You have successfully added the firmware in the SUT L3 Tool, Select “Enable Emergency Download Process” under the update option.

SUT L3 Firmware Added SUT L3 Update Option

Step 8: Now, Connect your Android Device to the Computer (make sure it is power off) and Click on Next Button to Begin the Flashing.

SUT L3 Start Flash

Step 9: Now, SUT L3 Tool will flash the firmware on your Android Device.

SUT L3 Flashing

Step 10: Once Flashing is completed, you will be able to see Green Pass Status.

Step 11: Now, close SUT L3 Tool and disconnect your Android Device from the computer.

Congratulations, Now your Android Device is successfully running the Stock Rom you have Downloaded.

Readme Once:

[*] You can follow the above tutorial to flash all types of Intel and Mediatek Chipset Based Firmware (comes with .nb0 or .ffu extension).

[*] Take Backup: Take a Phone backup before using the Smart Phone Upgrade Tool as because during the flashing process your personal data will be removed.

[*] The above tutorial allows you to Flash Stock Firmware on your Android Device without violating the Device Warranty.

[*] Credits: SUT L3 Tool is created and distributed by Intel, LLC. So, full credits goes to them for sharing the tool for free.

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