You simply need to flash back your stock system.img. Its quite possible your Infinix Hot 4 was rooted before you installed the OTA update. Help! My Infinix Hot 4 is bricked! It got stuck in recovery mode after I installed the OTA update, what do I do? To update your Infinix Hot 4 to Nougat using SP Flash Tool, download the Infinix Hot 4 (X557) Nougat SP Flash Tool update (X557-H807A1D1-N-170426V18) then flash it using SP Flash Tool. How to update the Infinix Hot 4 (X557) using SP Flash Tool

Navigate to the Tcard update zip and select it.

Here on this page, we have shared the official and tested version of SP Flash Tool, i.e., SP Flash Tool v5.2016.

In stock recovery, you use Volume buttons to navigate and Power button to select SP Flash Tool v5.2016 is a small application for Windows Computer, which allows you to Flash or install the Stock Firmware on devices powered by MediaTek Chipset.

You need to load scatter file for MTK based device for functioning.

SmartPhone FlashTool is working with MediaTek Android smartphones (MTK based) You can Download SPFlashTool from our downloading section.

Boot the Infinix Hot 4 into recovery mode SP flash tool is an application which mainly helps you to flash Stock ROM, Custom recovery and fixing in some extreme cases ( firmware update, Flash recovery, unbrick bricked Android device etc.).

Copy the Tcard zip to both the phone storage and SD card.

Updating your Hot 4 via Tcard requires that you first download the Infinix Hot 4 (X557) Nougat Tcard zip (X557-H807A1D1-N_Tcard_update_170426V18). How to update the Infinix Hot 4 (X557) using Tcard

If you can’t find the Infinix Hot 4 firmware for your Build Number then it would be wise to dump your firmware in scatter format using Miracle Box so you can easily rollback to your previous firmware / build incase the update is buggy or not fully compatible with your build.

If your Infinix Hot 4 is running on a custom recovery then ensure to flash back the stock recovery.

This however doesn’t apply if you’re updating via SP Flash Tool

If you have rooted your Infinix Hot 4 then ensure to unroot your Infinix Hot 4 because installing an OTA update zip on a rooted phone could brick it.

Check your phone’s current Build Number under Settings > About > Build Number and write it somewhere safe you might need it later.

If you wish to update your Hot 4 from Marshmallow (Android 6) to Nougat (Android 7) then here’s a checklist before you go ahead: The Infinix Hot 4 (X557) has received an Android 7.0 (Nougat) update.

Hovatek sp flash tool