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Infocus M550 Firmware

Last Updated on December 13, 2018 by Sathishkumar Varatharajan Leave a Comment

Are you looking for the stock ROM firmware of your device InFocus M550? If yes your answer, you are on the right page. We have given the direct link to download InFocus M550 firmware.

Download InFocus M550 stock ROM from here, flash it in your device and enjoy the native Android experience again. The download file contains USB driver of your device and the flash tool.

Download Infocus M550 Firmware

Download InFocus M550 Firmware

Stock ROM File Name: Infocus_M550_ZD1_024K_0_00CN_A01_4.4.4.zip
Stock ROM File Size: 750 MB
Android OS Version: 4.4.4


Download Now

How To Flash Stock ROM Firmware On InFocus M550

Note: Before getting started with this flashing process, take a complete backup of personal data in your device using appropriate apps.

Step 1: Download the stock ROM zip file given above and extract it on your computer to get SUT L3 (Software Update Tool) and stock firmware of your device.

SUT L3

Step 2: Now click on “launcher.exe” and install SUT L3 or Software Update Tool on your Windows computer.

Step 3: Next, download InFocus M550 USB driver and install it on your computer. Only by installing USB driver, you will be able to connect your device to the computer.

Step 4: Now launch SUT L3 on your computer. Once done, click on “Next” as shown in the screenshot below.

SUT L3 Welcome Window

Step 5: In the next window, click on “…” button and choose the firmware file (.nb0 or .ffu file) of your device.

Select Firmware File SUT L3

Step 6: Next, choose Enable “Emergency Download Process” under “Update Option“. Once done, switch off your Android smartphone or tablet and connect it to your computer using the original USB data cable. Now click on “Next” in SUT L3.

SUT L3 Start Firmware Flashing Process

Step 7: SUT L3 or software update tool will start flashing firmware on your device and once it is finished, you will see the Green Pass message.

That’s it. Now you have successfully flashed firmware on your InFocus M550 Android device.

If you encounter any errors or face any issues while following this tutorial, do let me know via comments.

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