Guide changing from MIUI to LineageOS on Redmi Note 10S

November 23, 2023

This guide will not take any responsibility of damage of one’s property.

Pre-requisites:

Software Required:

Pre-cautions:

Pre-Steps:

Go to settings
About Phone
Tap 5 times on MIUI Version (It will enable developer option)
Once developer option is enabled, go to Additional Settings and open developer options
Toggle OEM unlocking and Add account in “Mi Unlock status” (It will use your data)
Enable ADB debugging
Add adb drivers for your device on your computer

Steps to unlock boot-loader:

Ensure ADB is on
Open the Mi Unlock Tool
Login to your Mi Account linked with the device on the Mi Unlock Tool.It will start the process of verifying the account
Now, it will show you the time required to unlock the boot-loader
Wait till the time finishes
Do same process from Step 1
Then, it will lead to unlock button, upon clicking the button it will begin the process of unlocking the process of boot-loader unlock. It will format your device and get you back to base MIUI
Congrats your boot-loader has unlocked and can flash custom OS or previous version of MIUI and mods into it

Steps to install Lineage OS:

Download the MIUI fastboot rom with android 13
Open fastboot mode (Volume Down + Power) on your device and connect the device to your computer
Open Mi Flash Tool and Select the downloaded rom
After connection is successful then showing, select the device
Click on flash button, it should now begin flashing the rom onto the device
After the flashing is complete then the device might reboot

Download the dtbo.img from Lineage OS page for this device
Open fastboot mode (Volume Down + Power) on your device and connect the device to your computer
Flash the downloaded dtbo.img file using the command
```
 fastboot flash dtbo dtbo.img
```
You will now have flashed partitions required for lineage os
Download the Lineage OS recovery image for the device boot.img
Open fastboot mode (Volume Down + Power) on your device and connect the device to your computer
Flash the downloaded recovery image onto your device using the command:
```
 fastboot flash boot boot.img
```
Important: Now reboot your device into recovery mode using keys (Volume Up + Power)
If you see the Lineage OS logo then you are booted into Lineage OS recovery, else you have to again flash the recovery.

Build the lineageOS installation package for your device (Process too long look here: link) and put the installation package onto your computer
Tap Factory Reset, then Format Data/Factory Reset.
Return to the Lineage Recovery’s main menu
Select Apply Update, then Apply from ADB
Now Connect your device to the laptop, and put the command
```
 adb -d sideload installationPackage.zip
```
Lineage Recovery will inform you to reboot to recovery to install other addons. Select Yes if you want to install Gapps. I choose Yes

Download the Google Apps (Gapps) package from link
Select Apply Update, then Apply from ADB
Now Connect your device to the laptop, and put the command
```
 adb -d sideload GappsPackage.zip
```
The screen will say Signature Verification failed. Click Yes
Reboot your system