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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. My device own is
    Device name: Infinix Hot S
    Model Number: Infinix_X521.
    Build number: X521-J5088A1-M-170323V153

    which of the firmware can i use?

      1. my phone gets rebooted each time and also it stuck and power off, build number: X521-J5088A1-M-170323V153

      1. so what i shall better do?? my phone is not workig…needs update..phone update says >>insert t card but the phone have no card slot at all…
        please help me.

      2. sorry bro bulid no. is x521-J588A1-M-160809V38
        and the phone hv not T card slot so that i couldnt upgrade by itself
        thank you

  2. Using so flash tool, can I until recovery in order to avoid overwriting the twrp I installed just in case I need to roll back? Please respond
    My build is x521 j5088e1-m-161222v23

    1. You best flash back your stock recovery if you plan using Tcard. If you’re however updating using SP flash tool then yes, you can untick recovery and flash the rest but there’s a very good chance that the TWRP recovery won’t be compatible with your phone after the update

  3. Please, help me check if my infinix hot s can upgrade to android version 7
    Build number: X521-J5088E1-M-170323V23
    If yes, please send me the link of the exact one to download
    Thanks…

      1. I’ve tried so but after selecting Boot in Recovery, it just shows XOS Chameleon with a NO COMMAND warning under it. What should I do?

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