How can I upgrade Stock ROM firmware on a Alcatel One Touch Ot S521a? 2024

Last update:

Alcatel One Touch Ot S521a Stock firmware



The download Stock ROM firmware APK file for Alcatel One Touch Ot S521a on android: Nougat, KitKat, Oreo, Marshmallow, Q, Lollipop, Lollipop, Pie.



Select your android version:

Android Gingerbread 2.3.3 - 2.3.7 2010 year

  • ‎App Name‎: FirmwareAndroid_3.6.APK
  • Languages: English , Multi-language
  • File Size: 4.32 MB
  • Last update: 23 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 3.6
  • Downloads: 55 518


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Android Ice Cream Sandwich 4.0.3 - 4.0.4 2011 year

  • ‎App Name‎: FirmwareAndroid_8.9.APK
  • Languages: English , Multi-language
  • File Size: 6.78 MB
  • Last update: 22 February 2024
  • File Type: application/vnd.android.package-archive
  • Version: 8.9
  • Downloads: 47 035


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Android Jelly Bean 4.1.x 2012 year

  • ‎App Name‎: FirmwareAndroid_2.6.APK
  • Languages: English , Multi-language
  • File Size: 6.75 MB
  • Last update: 06 February 2024
  • File Type: application/vnd.android.package-archive
  • Version: 2.6
  • Downloads: 56 588


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Android Jelly Bean 4.2.x 2012 year

  • ‎App Name‎: FirmwareAndroid_1.6.APK
  • Languages: English , Multi-language
  • File Size: 6.77 MB
  • Last update: 02 January 2024
  • File Type: application/vnd.android.package-archive
  • Version: 1.6
  • Downloads: 84 276


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Android Jelly Bean 4.3 2013 year

  • ‎App Name‎: FirmwareAndroid_8.3.APK
  • Languages: English , Multi-language
  • File Size: 8.97 MB
  • Last update: 16 April 2024
  • File Type: application/vnd.android.package-archive
  • Version: 8.3
  • Downloads: 71 464


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Android KitKat 4.4 2013 year

  • ‎App Name‎: FirmwareAndroid_2.7.APK
  • Languages: English , Multi-language
  • File Size: 7.84 MB
  • Last update: 11 February 2024
  • File Type: application/vnd.android.package-archive
  • Version: 2.7
  • Downloads: 67 868


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Android Lollipop 5.0 2014 year

  • ‎App Name‎: FirmwareAndroid_6.7.APK
  • Languages: English , Multi-language
  • File Size: 5.25 MB
  • Last update: 09 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 6.7
  • Downloads: 42 941


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Android Lollipop 5.1 2015 year

  • ‎App Name‎: FirmwareAndroid_9.1.APK
  • Languages: English , Multi-language
  • File Size: 2.77 MB
  • Last update: 15 January 2024
  • File Type: application/vnd.android.package-archive
  • Version: 9.1
  • Downloads: 69 628


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Android Marshmallow 6.0 2015 year

  • ‎App Name‎: FirmwareAndroid_7.4.APK
  • Languages: English , Multi-language
  • File Size: 9.21 MB
  • Last update: 25 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 7.4
  • Downloads: 74 346


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Android Nougat 7.0 2016 year

  • ‎App Name‎: FirmwareAndroid_6.7.APK
  • Languages: English , Multi-language
  • File Size: 3.94 MB
  • Last update: 10 January 2024
  • File Type: application/vnd.android.package-archive
  • Version: 6.7
  • Downloads: 37 536


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Android Nougat 7.1 2016 year

  • ‎App Name‎: FirmwareAndroid_7.APK
  • Languages: English , Multi-language
  • File Size: 4.35 MB
  • Last update: 31 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 7
  • Downloads: 84 129


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Android Oreo 8.0 2017 year

  • ‎App Name‎: FirmwareAndroid_1.2.APK
  • Languages: English , Multi-language
  • File Size: 5.24 MB
  • Last update: 20 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 1.2
  • Downloads: 48 248


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Android Oreo 8.1 2017 year

  • ‎App Name‎: FirmwareAndroid_6.3.APK
  • Languages: English , Multi-language
  • File Size: 2.13 MB
  • Last update: 18 April 2024
  • File Type: application/vnd.android.package-archive
  • Version: 6.3
  • Downloads: 45 595


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Android Pie 9.0 2018 year

  • ‎App Name‎: FirmwareAndroid_8.3.APK
  • Languages: English , Multi-language
  • File Size: 6.9 MB
  • Last update: 06 January 2024
  • File Type: application/vnd.android.package-archive
  • Version: 8.3
  • Downloads: 69 750


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Android Q 10.0 2019 year

  • ‎App Name‎: FirmwareAndroid_4.4.APK
  • Languages: English , Multi-language
  • File Size: 2.2 MB
  • Last update: 05 February 2024
  • File Type: application/vnd.android.package-archive
  • Version: 4.4
  • Downloads: 85 787


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Android 11 2020 year

  • ‎App Name‎: FirmwareAndroid_8.9.APK
  • Languages: English , Multi-language
  • File Size: 5.24 MB
  • Last update: 24 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 8.9
  • Downloads: 31 840


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Android 12 2021 year

  • ‎App Name‎: FirmwareAndroid_6.3.APK
  • Languages: English , Multi-language
  • File Size: 7.95 MB
  • Last update: 28 April 2024
  • File Type: application/vnd.android.package-archive
  • Version: 6.3
  • Downloads: 31 997


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Android 13 2022 year

  • ‎App Name‎: FirmwareAndroid_9.7.APK
  • Languages: English , Multi-language
  • File Size: 8.9 MB
  • Last update: 18 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 9.7
  • Downloads: 8 199


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Android 14 2023 year

  • ‎App Name‎: FirmwareAndroid_6.4.APK
  • Languages: English , Multi-language
  • File Size: 2.41 MB
  • Last update: 26 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 6.4
  • Downloads: 9 365


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Android 15 2024 year

  • ‎App Name‎: FirmwareAndroid_1.6.APK
  • Languages: English , Multi-language
  • File Size: 3.85 MB
  • Last update: 19 March 2024
  • File Type: application/vnd.android.package-archive
  • Version: 1.6
  • Downloads: 78 151


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Android All - universal version

  • ‎App Name‎: FirmwareAndroid_2.6.APK
  • Languages: English , Multi-language
  • File Size: 5.03 MB
  • Last update: 19 February 2024
  • File Type: application/vnd.android.package-archive
  • Version: 2.6
  • Downloads: 46 203


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Download Android firmware APK file newest version 2020

Supported android devices: Alcatel One Touch Ot S521a, Sb6190 Lock, G4 Marshmallow, Iconia B1 A71, Win 10 Driver, Sony Dcr-dvd200 and many others.





Watching YouTube video - How to upgrade Stock ROM firmware in Alcatel One Touch Ot S521a?


How to install APK file?

Full guide how to install apk file on android device.

guide how to install apk file on android device




All rights reserved. Unauthorized reproduction, in whole or in part is strictly prohibited.



Latest Comments

WaterSymphony, :

Thumbs up! Handles tasks effortlessly. Ot May ROM Version] Stock



AquaBreeze, :

Excellent! Keeps getting better.



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LightningWaltz, :

Offline functionality has gotten better with the latest firmware. Convenient! [latest Version] Touch One Firmware Stock Updated Alcatel



WindDancer, :

Kudos to the developers!



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The tutorial provided is clear and concise!



ShadowBlend, :

I’m telling everyone about this app. Firmware [latest One Download ROM - Ot Touch APK S521a May 2024 2024



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Firmware's self-diagnostic feature simplifies troubleshooting. [latest Version] Updated - One 2024 May S521a Download Firmware 2024 Stock APK Touch ROM



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Convenient, practical, and so much fun! 2024 2024 Firmware Ot Download One





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