How To Upgrade Infinix Hot Note X551 OS To Android Lollipop 5.1

It looks Infinix Mobility is working hard to give their consumers an after-sales support. They are listening to their customers and trying to bring what they need to them. With the joint effort of Infinix engineering team, you can now upgrade Infinix Hot Note x551 to the latest Android 5.1 (Lollipop). This just what you have been waiting for, for so long and now the Lollipop has been released! Finally!!!

infinix hot note x551 android 5 1 lollipop

We have already gathered loads of screenshots that will be revealed to you just as you upgrade to the new Operating System.

To those who are yet to get this awesome device or just want to know more about it should read this slowly:

The Infinix Hot Note x551 device is a 5.5 inch Phablet. Just as the name implies, it is more like an elder brother to the Infinix Hot x507 Android smartphone.

The Infinix Hot Note features a screen having a 1280 x 720pixels HD display resolutions, powered by a 1.4Ghz mediatek octacore processor which will make it run smoothly. This device is enhanced with a 1GB/2GB of RAM & 16GB/342GB of ROM. It is powered with super fast charging ability with a 4000mAh Li-Polymer battery capacity & lastly, the camera specs states a 8MP back camera with a 2MP front camera.

Without wasting much time today, let’s head straight to the point.

Why o I need to upgrade my Infinix Hot Note x551? What’s inside the Infinix Hot Note Lollipop upgrade?

Here are some of the new features of the of the upgrade that will be added to your Infinix Hot Note x551 phone once you upgrade it to Lollipop 5.1.

  • optimized User Interface display, XUI first beta release
  • Added font management, theme management, online wallpaper function
  • Added ultra-power save function
  • Added clear application function
  • New video player added
  • Optimized system performance
  • Fixed issues
  • Support OTA upgrade from 0730

See images of some of the awesome experience after you have successful upgrade your Infinix Hot Note phone to Lollipop 5.1:

Download Top Best PSP Games for Android Phones 2019





Before you get all these done, there are some basic requirements you need before proceeding to the next step:

These are list of what you will need:

  • An Infinix Phone with enough battery
  • A USB cable. A proper one.
  • A computer with VCOM Mediatek Drivers properly installed
  • SP Flashtool, a Windows Program
  • The ROM to be flashed. (I know it is supposed to be an update).
  • Patience, it won’t take time.

How to Upgrade Infinix Hot Note X551 to Android 5.1 Lollipop

NOTE: This new upgrade should not be mistaken for the Over-the -Air (OTA) upgrade that you can find in the settings of your Infinix Hot Note phone. Infinix Mobile is presently working towards providing an OTA upgrade over the WIFI via the mobile phone, but until then and I shall let you know here at TechLector!

Kindly note that Infinix Hot Note users who rooted their devices will have problem with this upgrade, in fact it reportedly crashed rooted phones, ok? So you are warned! Lol am not trying to scare you but take it serious.


  • Download the ROM

You need to download the upgrade package first; if you are willing to download it on your phone then you should head straight to the Google Playstore and download an App called Mega. To download the package on your PC, download directly from HERE.

Send it to your computer, if you downloaded via phone. Extract it to your desktop.


  • Set-up your Computer

This could be the hard part.

Download SP Flashtool HERE. After downloading it, extract it to your desktop then launch the “flash_tool.exe” file inside.

Download VCOM tools HERE. You’ll need to read everything on this as it has a how-to guide:

  1. First disable Driver Signature enforcement on Windows 8,8.1 and 10.
  2. Then install the necessary drivers.
  3. This is very important. Nothing will work without setting this process up properly.

After setting up the VCOM tools, you need to launch the SP Flashtool and then:

  • Click on Scatter Loading
  • Look for a text file from the ROM you had downloaded called “MT6592_Android_scatter.txt
  • Wait for the SP Flashtool to compile its own stuff.
  • Select Firmware Upgrade option
Root Infinix Hot Note X551 Without PC

You can see the images below to know where “Scatter Loading” and “Firmware Upgrade” can be found.



  • Phone set-up

Before continuing, you need to go to your device. Go to settings –> Developer Options –> Enable USB debugging. If you don’t see Developer Options, go to About Phone and click on Build Number until it says “You’re now a developer”.

  • Then Enable Debugging
  • Remove your phone Memory card.
  • Switch it off.
  • Pray everything works.


  • Actual Flashing

After switching off the phone, go back to your computer. Go to the SP Flashtool Window. Click on the Download Button near the Stop Button.

Now connect your phone with the computer through the USB cable. Wait for the magic.


You will only be done when you see a big White Tick on a Greenish-Yellow background. Otherwise don’t remove/disconnect phone.



  • Reboot

It will take quite some time to reboot. Be patient. When it boots, you will meet a whole new experience:


Make sure to directly go to Settings > About Phone > System Update and Download and Install the Updates available.

I haven’t encountered any issues with the two devices I have flashed and so I have no answers if you have issues.

Disclaimer: Please note that TechLector won’t be responsible if your device gets bricked in the process of upgrading. You should also be aware that upgrading your Infinix device via this method may void the 12-month warranty given to your Infinix Hot Note smartphone.

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  1. Ekene says

    Please I want to upgrade the version of my infinix X551 version 4.4.2 to 5.1

  2. samuel maundu says

    Kindly assist ,my infinix x551 is not functioning like before because when i want to switch to 3g or 4g network its switching off and when on it displays this “” can this be rectified?

    Yours sam.

  3. grishon says

    hi! i have a phone hot note x551 and each time i open my mobile bata my phone start duplicating other file and then it get hot and hanging .i have tryed to flash it but the system cannt be found in the computer.
    kindly help

  4. FrankFuse says

    if ur phone is rooted and u restore factory settings would u still be able to upgrade OTA

    1. Samuel Afolabi says

      After the factory reset, download Android root checker to be sure if your phone has unroot

  5. khaleedk1 says

    Comment: pls i want to upgrade my infinix x551 to lollipop version but my charging point is not accepting USB cable

  6. Patrick says

    Hello, I just needed to upgrade it straight away from system updates in my phone but it is saying that it is in its latest version. I really require this Lollipop version for more fun.

  7. John. M says

    Hey, Samuel, i upgraded xiu, ? 5.1,but why can’t i intall ota updates, it keeps saying system update has stopped unexpectedly /unfortunately, any way out!!

  8. Zander says

    Wat should I do with mega?

  9. Derrick says

    There are three sp flash tools which one should i download….nothing currently works on the pc

    1. Samuel Afolabi says

      you need to download the latest version

      1. Saftech says

        Flash_tool is not recognizing my phone even when I off it. Help pls

  10. Joshua says

    Do i need to unroot my phone before upgrading to lollipop 5.1?? and if the upgrading is successful, can i still root the phone??

  11. John. M Uganda says

    I downloaded the update over my phone, at first it gave me a hard time, when I was using the pre-installed browser, since it never redirected me to mega, I only realised where the problem was, after using Chrome (also pre-installed) and it redirected me to mega immediately, the point is that the browser is out of date, use chrome and everything will set it’s self out, then you will see the update download to you phone.
    Others, thanks so much, am not so good with computing but with your elaborate explanation I successfully updated, but now I only got one problem, as you instructed, I checked and downloaded the updates available, but every time I selected install, it says unfortunately system update stopped!!
    Anyway out!?!
    Awaiting a reply!!

  12. adegbaju shegun says

    Do i need to restore factory settings before i upgrade my phone?

    1. Samuel Afolabi says

      nope… only that you need to UNROOT it before upgrading

  13. Ummu says

    Please I sent the Mega app from my phone to the system but it’s just a blank note like thing what do I do

  14. raph says

    I mistakenly downloaded a virus, and many system files started duplicating itself, Trojan malware was identified by my Avast. I did a factory setting reset but I keyboard, measure, androidsystem, and other apps I didn’t download keep installing itself, I hoping a system upgrade with wipe off the malware,? Pls what to do?

    1. Samuel Afolabi says

      you need to flash new ROM on the device…

      1. Raph says

        Please how do iflash new rom

        1. Samuel Afolabi says
  15. Tareq Qasem says


    Really this confuse most of us regarding upgrading to lollipop manually!!
    Is there anyway to upgrade OTA?

    I bought my Hot Note Pro 16+2 from (Saudia Arabia) & now it’s pricked after 1 week after trying to upgrade manually, no power no charge, Don’t know what to do!.

    Is there any support team or agent here in Jordan?


    1. Samuel Afolabi says

      Hi Tareq,
      Yeah, there is OTA updates for the Hot Note Pro 16+2 See how to fix Bricked phones :=> here

  16. Wesley says

    I have tried to unroot but still it fails. Any method that I should use, coz I flashed back the stock recovery and unrooted but it still crushed.

  17. Wesley says

    I have a rooted x551 device. Can I get a cwm backup of the lollipop rom so that I can flash it on my phone coz the original update won’t install.

    1. Samuel Afolabi says

      you need to unroot it first

      1. david says

        pls my phone in no longer booting after an upgrade it has been showing no command pls what can i do

        1. Samuel Afolabi says

          Your device is bricked…. READ :=> Best Ways to Fix Bricked Android Devices & Tablets

          1. david says

            my phone is infinix and not tecno

  18. Blanchard says

    Bonjour chers amis je viens d’avoir mon téléphone infinix Hot note x551 et je souhaite aussi faire une nouvelle mise à jour et j’avoue que je n’y connais rien en développement alors je souhaite que vous m’aidiez

  19. Albert says

    Will it brick my phone if it’s rooted.

  20. tope says

    pls d downloading get tp 99 % and got free on my pc
    any solution to d dowloading or is there other link

    1. Samuel Afolabi says

      something must be wrong with your system… there is no other download link for now…

      1. Saftech says

        Whenever I connect my device I got this error message (PRO_INFO: Failed to get PMT info) help please!

        1. Samuel Afolabi says

          be sure to use the right rom

  21. Adetokunbo says

    Hi, so I was at to download d lollipop file of which I have d mega app installed on my infinix hot note, bt I can’t see any file nor it showing up any help plz, or u can just say d name of d folder

    1. Samuel Afolabi says

      Halo Adetokunbo,

      It is advisable to use PC as it is the best option… the Android MEGA will just give you a free cloud space of up to 50GB just to save the downloaded file ( … just head straight to download the file to PC directly and extract into a folder, then follow other steps as seen in the image provided above.

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