Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1


Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1 (Nougat 7.1.2) (Unofficial), ViperOS is google open source android project which is purely based on lineage os. ViperOS Rom for Xiaomi Redmi 4x is powered by android 7.1.2 nougat. ViperOS is free smooth and stable. ViperOS for Redmi 4x is Battery Friendly Custom ROM. ViperOS is well renowned for high performance and reliability. ViperOS ROM V2.1 is a DeOdexed rom which is also good for gaming as well as daily basis or heavy multitasking performance. This ROM is loaded with some cool features. For additional features information and installation requirements and method, Checkout the full post bellow.


Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1

Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1
Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1


ROM Description

ROM Name: ViperOS ROM

ROM Version: V 2.1

ROM OS: Android Nougat

OS Version: 7.1.2

Devices: Xiaomi Redmi 4X

ROM Base: Lineage OS, ViperOS

ROM Kernel: Linux 3.10.x

ROM Status: Stable and Unofficial

Rom Type – DeOdexed

ROM Size: 519.00 MB

Stock Firmware Required: Unlocked Bootloader

ROM  Language: English/ Multi language supported

Rom Release date: 21st August 2017

ROM Tester:  Soul Reaper

ROM Contributor: ViperOS Team

ROM Developer:  ViperOS Team (XDA Senior Member)

ROM Source Credit: XDA Forum


ROM Features

  • Android nougat
  • Smooth and stable rom
  • Audio FX
  • Audio Booster
  • Android latest security patch
  • Advance Customization
  • Bloatware removed
  • Based On Latest Google Android 7.1.2_r7 release
  • Based on AOSP (Android Open Source Project)
  • Better RAM optimization
  • Better Battery juice backup
  • Brightness slider
  • Brightness icon
  • Customizable icons
  • Clock position
  • Date design
  • Clean ROM
  • Carrier Labels
  • Clock and Date customization.
  • CPU tweaked
  • De-Odexed
  • Data easy toggle
  • Force expanded notifications
  • Heads up customization
  • Lockscreen weather
  • Multi-screen/ Split screen
  • Notifications
  • Network traffic indicators
  • Notification LED control.
  • Omni recent
  • OTA Support
  • PowerMenu customization
  • Per-Rooted
  • Quick pulldown
  • Quick Settings
  • Quick pulldown
  • QS rows and columns
  • Header customization
  • Status bar Customization
  • Statusbar icon customization
  • Screenshot types (Fullscreen and Partial area select)
  • Seconds in clock
  • System Smart pulldown
  • Show notification count
  • Power menu customization
  • Smart pulldown
  • Ticker
  • Theme engine
  • Task manager
  • Wi-Fi easy toggle
  • and So much more


Known Bug

  • Information not available


ROM Screenshots

Unofficial Nougat 7.1.2 Custom Rom ViperOS ROM V2.1 for Xiaomi Redmi 4X
Rom Screenshots



Modification of your android device such as Rooting or flashing Custom Recovery/ROM/tweaker’s results to void of the warranty of the device. Instandroid.net (We) and its authors will not responsible for bricked devices / dead SD-card or any damage in your device which is incurred in the process of installing tweaker/recovery/rom/firmware/rooting/unlocking or any development process the device. We highly advice you to take a backup of your device prior to performing the process. Please do some research if you have any concerns about features included in this ROM, before flashing it! You are choosing to make these modifications. Nevertheless if you need any help, just comments here. We will always pleased to help you.



To flash Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1 (Nougat 7.1.2) (Unofficial), You must need a Bootloader unlocked and Custom recovery  installed in your phone.


ROM Download

To use Unofficial build of Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1 (Nougat 7.1.2), First you need to download the rom files from download link bellow —


How To Install ViperOS ROM In Xiaomi Redmi 4X

  1. At first Download the ROM and copy the Rom file  and also GAAP files copy this in Phone’s Internal Storage/SD-card.
  2. It’s wise to backup your Current ROM, no matter how confident or experienced you are. So anything happen unpleasant you can retrieve back your old ROM
  3. If you don’t know how to backup ROM using Custom Recovery then
  4. Then Go to phone’s custom recovery mode by pressing Power button + Volume up button for 10 second and release the button after the Asus logo appear. It will take you to the first boot mode, than navigate your phone to the Recovery mode by pressing volume down.
  5. After successfully entering the Custom Recovery Option TWRP first & foremost take a backup up of your current ROM. Select “Backup” 》Select storage 》 backup process may take 5/7 minutes. Here is guide to backup your current rom.
  6. Than Wipe DataWipe Cache PartitionWipe Dalvic Cache (You shall find it in Advanced option).
    After formatting Cache go to Mount and StorageFormat Data, Format System.
  7. Just Click install select the Rom file from Phone’s internal storage/SDCARD (where you’ve copied the rom) and then flash Gaap. Reboot to system.
  8. First boot may take upto 10-15 min. Reboot. Complete the setup procedure.
  9. And enjoy the test of Xiaomi Redmi 4X Custom Rom ViperOS ROM V2.1 (Nougat 7.1.2) (Unofficial).

Source :  XDA Forum


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