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 Comments

  1. Please my build number is X521-J5088A1-M-170323V153. I haven’t updated to beta 1 or 2.
    Can I still update using t-card or i have to use scatter type.

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