Upgrade Infinix Hot X551 From Android Kitkat To 5.1 Lollipop OS – Here’s How To

A few days back, we wrote a quite detailed hands-on review of the android 5.1 lollipop OS on infinix hot note X551.

That went viral as the brand had to share the post on her Facebook and Twitter pages. Ever since then, I have constantly been getting comments and emails in regards to how to upgrade from android 4.4 KitKat to android 5.1 lollipop on infinix hot note x551.

infinix hot note x551 running lollipop OS

To be candid, the process is quite simple and easy. The basic thing is getting an idea of how the whole process works.

Off-late, we have been doing a lot of experiments with our unit. At a point, the device got bricked. Not just bricked, hard bricked.

Luckily, we were able to fix it and we shared the tutorial on how to. Judging by the comments, the tutorial has helped a lot of people so here’s more.

Upgrading Infinix Hot Note x551 From Android KitKat To 5.1 Lollipop

Here, we’d like to share a tutorial on how to upgrade your infinix hot note x551 to lollipop OS. Please note that we are strictly based on the hot note device here (not Hot Note Pro).

However, hot note pro users can follow the same procedure but do not use the same ROM file(It will brick the phone).

You will have to download the particular ROM for your device. We have also been able to upgrade infinix Zero 2 x509 from Android KitKat to 5.1 lollipop and we will be sharing a tutorial on that very soon.


  • A computer running windows OS. In our case, we have used windows 7 and windows 10.
  • A good USB cable. Preferably the same USB cord that comes with the phone.
  • Infinix Hot Note X551 Lollipop ROM file. Download Here. Extract to a folder on your computer after downloading.
  • VCOM Drivers Installed on your computer. You can read here for the files and how to install.
  • SP Flashtool downloaded. Please see this post for a detailed illustration of how to go about that.

If you have got all of those things in place, then let’s get started.

Steps To Upgrade Infinix HOT OS To Android Lollipop

Step #1. Make sure your infinix hot note x551 is fully functional and you have successfully installed the VCOM drivers on your computer. If you have got files on the phone, I would advise you to make a backup first because following this tutorial will wipe all content on the phone except the pre-installed apps.

Step #2. Navigate to the folder where you extracted the SP Flash Tool, right-click on the Flash_tool.exe file and choose to run as administrator.

Step #3. When the program completely loads up, click on scatter-loading and navigate into the folder where you had extracted the infinix hot note x551 lollipop ROM files into. Choose the scatter file(MT6592_Android_scatter.txt) and wait till it completely loads up on the SP flash tool program.

Step #4. Look properly under the scatter-loading file, you’d see a download Only option. Change it to Firmware Upgrade as indicated in the screenshot below.

upgrading infinix hot note to lollipop

Step #5. Now, click on Download. Make sure your infinix hot note is turned on. Now plug it into the USB port of the computer.

Step #6. Yes. Nothing happens right? Now, while the phone is still plugged into the computer, turn the phone off (not restart) then wait till you find some readings on the SP flash tool program.

Step #7. Leave it to completely finish the readings. Do not try to stop or interrupt the process otherwise the phone will get bricked.

Step #8. When the process is complete and you get the complete notification with a check mark, remove the phone from the computer and turn it on.

On the first reboot, it will take a while. Don’t panic. Your device is safe. When it fully boots up, follow the on-screen instruction in setting the device and there you have it. Android 5.1 lollipop OS on your infinix Hot Note X551. Pretty easy, right?

Questions and comments in regards to installing the android 5.1 lollipop update on the hot note device are welcome using the comment session and we will try answering almost every question asked.

Samuel is a Tech Enthusiast who loves to explore everything that concerns Tech. Most of his explorations and guides, he shares via this platform. He studied Computer Science and prefers being simply called Sammy! 😉