If your Xiaomi 15 Pro is stuck in a bootloop, bricked, showing “No Service,” or having performance issues after an update or modding, this guide will help you restore stock firmware, repair IMEI, and get your device working again—without visiting a service center.
What Is Stock Firmware and Why It Matters
Stock firmware is the official Android + MIUI system software pre-installed by Xiaomi. It contains drivers, system files, and everything required for your phone to work properly.
Flashing it can help solve:
System crashes or failed updates
Bootloops or stuck on MIUI logo
Corrupted software after rooting
Lost IMEI or network signal issues
When to Flash Firmware on Xiaomi 15 Pro
Use this method if:
Phone is stuck in a bootloop
Device is bricked or not turning on (software-related)
You’re facing random reboots or lag
You want to downgrade or upgrade MIUI
You need to repair IMEI (Snapdragon)
You’re switching back from a custom ROM to stock MIUI
Hold Volume Down + Power until you see the Fastboot bunny logo
Connect phone to PC via USB
Step 5: Load Firmware
Extract the .tgz file until you see folders with flash_all.bat
In Mi Flash Tool, click “Select”, and load the extracted folder
In bottom right, choose “clean all” (wipes all user data)
Step 6: Start Flashing
Click the “Flash” button
Wait 5–10 minutes until it says Success
Your phone will reboot automatically
Congratulations! You’ve restored your Xiaomi 15 Pro to stock MIUI firmware.
How to Repair IMEI (Snapdragon Model Only)
If you see “Invalid IMEI”, “No Service”, or missing SIM info, your phone’s EFS/IMEI may be corrupted. Use one of these tools only for your own device (never for illegal cloning).
Method 1: QCN Backup & Restore
Works with: Snapdragon versions
Download a QCN file for Xiaomi 15 Pro
Install QPST/QFIL Tool
Enable Diag Mode (*#*#717717#*#* or via ADB)
Use QPST Software Download to restore QCN
Reboot the phone
Method 2: Using SN Writer Tool (For MediaTek, if applicable)
Most Xiaomi 15 Pro units use Snapdragon, but if you’re working with MediaTek (rare variant), use this method.
Download SN Writer Tool and DB files
Enter Meta Mode or Preloader Mode
Input original IMEI numbers (printed on box or back)
Click Start and wait for confirmation
Reboot the device
Using a wrong IMEI is illegal. Always restore your original IMEI only.
Common Flashing Issues and Solutions
Issue
Solution
Device not detected
Reinstall USB drivers, change USB port/cable
Flash fails or gets stuck
Use updated Mi Flash Tool, re-check firmware version
Bootloop after flashing
Enter Recovery Mode → Wipe Data
IMEI still invalid after repair
Try Maui META, QCN Restore, or factory EFS partition fix
Why Use the Official Firmware
Restores factory settings
Fixes bugs, lags, and system errors
Ensures security and stability
Re-enables OTA updates
Repairs IMEI and baseband
Final Thoughts
Flashing stock firmware on the Xiaomi 15 Pro is one of the most effective solutions to fix software damage, soft bricks, and IMEI corruption. Whether you’re fixing a bootloop or undoing a custom ROM, this guide gives you all the steps needed to bring your phone back to factory condition.
Always double-check your firmware version, unlock the bootloader, and use only your own IMEI when restoring.
