Trying to update your Infinix Hot S (X521) to Nougat? Your Build Number matters….as always!



Its the season of test Android Nougat (7) OTA updates as promised by Infinix. There’s been the Infinix Zero 4 (X555), Infinix Hot 4 (X557), Note 3 (X601-H536A1) and Note 3 Pro (X601-H537A1) which have received their test Nougat builds and now the Hot S (X521) but only for the A1C1 & E1G1 Build Numbers .

The Infinix Hot S (X521) has several builds as listed at our Infinix stock ROMs / firmware collections thread ranging from the A1, C1, E1, G1 to the I1. If you’re looking to install this Nougat update then ensure your Build Number matches else you could end up with a bricked phone.

Updating Infinix Hot S (X521) to Nougat (Android 7) via SP Flash tool or Tcard

If your Build matches then you can download the update below:

Important things to note before updating your Hot S (X521) to the Nougat test build



148 thoughts on “Trying to update your Infinix Hot S (X521) to Nougat? Your Build Number matters….as always!”

  1. Please which of the firmware would be OK for me?
    My model number; infinix_X521
    Build number; X521-J5088A1-M-170323V153
    Thanks.

  2. Can you help me. How to get the build number of my infinix hot s? It was bricked and i cannot open the 0hone to read its build number. Any suggestion? It’ll will be appreciated a lot. Thanks.

  3. I have an Infinix X521-5088AC-N-170602V34. I have updated into Nougat 7. My problem is still same in 6 and 7. Mobile data does not work properly in my phone. But when i make its hotspot and someone use it by wifi on other phone , internet speed is fine on other phone. Kindly suggest how to fix that issue

    1. An update doesn’t necessarily mean all issues on your device will be fixed. Your trouble using mobile data might be due to a blacklist / data management app which you have installed. Look through your list of all installed apps

      1. Thanks for reply. Sometime its work fine. But when problem appears, after restart mobile many a times, problem resolve. Kindly tell how to check black lise/Data management app?

  4. I have an infinix X521-J5088E1-M-160323V23 and cant find the software update for android 7.0 for that build number please can you help

  5. Bro I have Infinix hot s the build number is J5088C1-M-161228V118,I just wanted to ask is my phone compatible for this update.

      1. if my phone is already in the root whether it can update to nougat? and I’ve downloaded the file but why can not “update failed”

  6. Please I have a rooted infinix hot s with build number x521-j5088A1-M-161223V140. Wanna update it to nougat. Which of the updates should I download? Thanks

  7. My device is hot s pro. Build no. Is mentioned below.
    How to update in Noughat??
    Please guide.
    X521-J5088C1-M-170323V123

Leave a Comment

Your email address will not be published. Required fields are marked *

live chat
whatsapp telegram instagram
Scroll to Top