Redmi Note 14 4G (tanzanite) - Flashing Guide

ido@rexprjkt May 28 at 08:58 pm Intermediate

Important Warning

Flashing custom ROMs may void your warranty and carries risks including potential data loss or device bricking. Proceed at your own risk and always backup your data.

Prerequisites

Computer with ADB

Windows/Mac/Linux with ADB and Fastboot installed

USB Cable

Original or high-quality USB cable

Battery Charge

Must be 100% battery

Required Files

ROM zip and vendor_boot.img

Video Tutorial

Watch this step-by-step video tutorial for visual guidance

Pro Tip: Follow along with the video while reading the written guide below for the best learning experience.

Step-by-Step Guide

Download Required Files

Download the following files:

vendor_boot.img - Required for booting
Custom ROM zip - Your chosen ROM
GApps (optional) - Google Apps package
Magisk (optional) - For root access

Boot into Fastboot Mode

Power off your device, then hold Volume Down + Power buttons simultaneously until you see the Fastboot logo.

Fastboot Mode

# Connect device to computer
# Verify connection
fastboot devices

Flash vendor_boot.img

Execute the following commands in order:

Critical Commands

# Flash vendor_boot to both slots
fastboot flash vendor_boot --slot=all vendor_boot.img

# Reboot device
fastboot reboot

CRITICAL WARNING: DO NOT USE fastboot reboot recovery OR YOUR DEVICE MAY BRICK!

Boot into Recovery

After the device reboots, quickly hold the Volume Up button to boot into recovery mode.

Timing is crucial here. Start holding Volume Up immediately after the screen goes black during reboot.

Format Data

In recovery mode:

Navigate to Wipe → Format Data
Type "yes" to confirm
Return to main menu

This will erase all your data. Make sure you have backups!

Flash ROM

Choose one of the following methods to flash the ROM:

ADB Sideload Method

# In recovery, select "Apply Update" → "Apply from ADB"
adb sideload lineage-22.1-xxxxxxxx-UNOFFICIAL-tanzanite.zip

# Or drag and drop the file
adb sideload # Then drag ROM zip to terminal

If you have the ROM file on an SD card:

Insert SD card with ROM zip
In recovery, select "Install"
Navigate to SD card location
Select the ROM zip file
Press power to confirm flash

Post-Flash Steps

After ROM installation completes:

Select "Yes" when prompted to reboot to recovery
Flash GApps (optional but recommended):
GApps Installation
```
adb sideload MindTheGapps-14.0.0-arm64-20240605.zip
```
Flash Magisk for root (optional):
Magisk Installation
```
adb sideload Magisk-v27.0.zip
```

Reboot and Enjoy

Finally, reboot to system:

Final Reboot

# In recovery, select "Reboot" → "System"

Congratulations! Your device should now boot into the new custom ROM. First boot may take 5-10 minutes.

Fixes

Device won't boot to Fastboot

Ensure device is completely powered off. Try different button combinations or use ADB command: adb reboot bootloader

ADB device not found

Install proper USB drivers, try different USB cable/port, enable USB debugging in developer options.

Sideload fails at 47%

This is normal for some recoveries. The ROM is successfully flashed despite the error message.

Stuck on boot animation

Re-flash vendor_boot.img, ensure you used correct ROM version, try clean flash again.