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Xiaomi Mi 4i Dual Boot Patcher – How To Use Multiple Custom ROM in Mi 4i

Xiaomi Mi 4i Dual Boot Patcher – How To Use Multiple Custom ROM in Mi 4i

Dual Boot Patcher for Xiaomi Mi 4i r is an android open-source developer app which allows to install multiple (Two or more than one ) custom ROM in your Mi 4i. Currently Dual Boot Patche is very popular and it support more than 150+ android device. Dual Boot Patcher for Xiaomi Mi 4i will allow you to boot Two or more ROM in your Xiaomi Mi 4i.  If you are a custom rom lover but still love to  use the fantastic MiUi and also want’s to flash various files, then Dual Boot Patcher is kind of a great choice for you. You can have the MiUi beauty with CyanogenMods performance. With the help of Dual Boot Patcher, you can run both Miui 8.2  Stock and Lineage OS 14.1.(CyanogenMod’s android 7.1 nougat update is known as Lineage OS 14.1) in you Xiaomi Mi 4i. You can now call it “killing two birds in one stone“. Dual Boot Patcher will help to use custom kernels,  GAAP  and also will install SuperSU in Secondary rom (that means you will get root access in secondary rom).


Xiaomi Mi 4i Dual Boot Patcher

Xiaomi Mi 4i Dual Boot Patcher - How To Use Multiple Custom ROM in Mi 4i
Xiaomi Mi 4i Dual Boot Patcher – How To Use Multiple Custom ROM in Mi 4i

(How To Use Multiple Custom ROM in Mi 4i)



Rooting or flashing Custom Recovery/Custom ROM’s results to the void of the warranty of the device. But Xiaomi allows it user to Root their device. So Playing with xiaomi’s android os doesn’t void the warrenty . (We) RaphsonBD and its authors will not responsible for bricked devices, dead SDcard or any damage in your device which is incurred in the process of flashing Custom Recovery/custom ROM/Rooting or any development process the device. We highly advice 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 already. We will always pleased to help you.


Downloads and Requirements

To Use Multiple Custom ROM in Xiaomi Mi 4i using Dual Boot Patcher, You need a rooted Xiaomi Mi 4i to proceed and also need to downloads few files from download link bellow

  • Dual Boot Patcher android app – Download
  • Dual Boot – Download
  • A rooted Xiaomi Mi 4i


Xiaomi Mi 4i Dual Boot Installation Process


Step 1 – Prerequisites

At first download all the files from above link, and install Dual Boot Patcher android app in your mobile. No matter how confident you are always take a complete back up of your current ROM using custom recovery, So that if anything unpleasant happen you can always retrieve back. Here is the – Guide to take a complete backup of your phone using custom recovery.


Step 2 – Post-Requisites

Now Launch the Dual Boot Patcher, navigate to ROM’s in the navigation drawer. Dual Boot Patcher app will  ask you to set “The kernel“. If you fail  to update mbtool, please double check you grant root access to Dual Boot Patcher ( from SuperSU)


Step 3 – Patching the Secondary ROM

Now open the “Patch Zip File” file from the navigation drawer and Click on the + (plus) button in the bottom right corner of Dual Boot Patcher. Then  Select the file you want to patch . After that  select the secondary to install the secondary ROM for patched zip file. Once the flashable zip is patched, copy the Patched files in SDCard root folder.


You have done the hard part. Now you are ready to flash the patched zip file either via custom recovery or via dual boot pacther. Follow  “Step 4” or “Step 5” whichever is more convenient for you.


Step 4 – Flashing the Patched Secondary ROM using Custom Recovery 

Flash Using Recovery Boot your phone into custom recovery Mode. Click  on Install button from recovery (CWM/TWRP/Phillz Touch – whichever you want to use) and Browse for the Patched ROM .zip file that you created (patched) in  Step 3 .Wait for flashing process to be completed. Now  the Patched ROM .zip is being installed as a secondary ROM on your Xiaomi Mi 4i.


Step 5 –  Flashing the Patched Secondary ROM using Dual Boot Patcher

Launch the “Dual Boot Patcher” app from launcher then go to ROM‘s section in navigational drawer.  After that tap the floating button on the bottom right and add Patched ROM .zip you want to install as secondary rom in your device.  If you patched multiple ROM, then you can add and queue multiple Patched ROM .zip files. I personally used two rom at a time. After adding the Patched ROM .zip files, click  on the check mark in the action bar and ROM will be flashed/installed.

You have now  successfully installed more than one custom ROM in your Xiaomi Mi 4i.


How To Switch Between Multiple ROMs Using Dual Boor Patcher App ?

To switch between multiple ROM you need  to spent little more effort. Turn of your phone and enter into custom recovery mode. then install/flash “Dual Boot” file. Than Wipe cache and Wipe cache partition. and reboot  your phone. You will now  able  to see  a new option in “dual boor patcher” app to switch between multiple ROM’s.

If you are ou have TWRP – Custom Recovery User, you can also switch manually by tapping Install > Images (bottom right) > Go to –  sdcard> MultiBoot> [Your ROM] > flash boot.img.


You can  Wipe ROM, Wipe Cache,  Wipe Data, Wipe System, Or Wipe Dalvik-Cache from Dual Boot Patcher > ROM  navigation drawer and tap on the 3 dots.



FAQ – frequently asked question

  • Flash a mod or custom kernel for the primary ROM?

Patch it for primary before flashing. If the zip does not wipe cache, it is also safe to flash it directly.

  • Update the primary ROM?

Patch the zip for primary and flash it. The “primary” installation target is designed so that other ROMs won’t be affected when you want to flash something for the primary ROM.

  • Update a non-primary ROM?

Patch and flash the zip exactly like how you did it the first time. (follow  Step – 3)


  • Flash a mod or custom kernel for a non-primary ROM?

First patch then flash it  (follow step – 4 or step – 5)

If you stumble in – How To Use Multiple Custom ROM in Mi 4i (Xiaomi Mi 4i Dual Boot Patcher) in any way, Don;t shy, just shoot a comment! we are always here to help you.


Credit- chenxiaolong, XDA Team and  DualBootPatcher Team



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