Facing issues like bootloop, no network, system errors, or missing IMEI on your POCO F7 Ultra / Redmi K80 Pro? You’re not alone. Many users experience these problems after updates, failed custom ROMs, or firmware corruption. Luckily, with the right files and tools, you can fix your phone at home—no service center required.
In this guide, we’ll cover everything from downloading the correct firmware, flashing the device, to repairing IMEI safely and legally.
What is Stock Firmware and Why It Matters
Stock firmware (also known as a ROM or flash file) is the official OS that comes pre-installed from the manufacturer. It includes all drivers, apps, and system files your phone needs to operate.
Flashing the correct stock firmware can help when:
Your phone is stuck in a bootloop
Apps keep crashing
The phone is bricked or unresponsive
The IMEI is missing or corrupted
You want to remove root or custom ROMs
You need to upgrade/downgrade MIUI or Android
When Should You Use POCO F7 Ultra / Redmi K80 Pro Firmware?
Bootloop or stuck on MIUI/POCO logo
Dead boot due to a bad flash or failed OTA update
IMEI shows as “Invalid” or “Null”
Phone is overheating or crashing randomly
You want to revert from custom ROM to official MIUI
You need a clean start after rooting or heavy mods
What You Need Before Flashing
Stock firmware (Fastboot version) for POCO F7 Ultra / Redmi K80 Pro
Important: Unlocking the bootloader will wipe your data and may void your warranty. Use Xiaomi’s official Mi Unlock Tool.
How to Flash POCO F7 Ultra / Redmi K80 Pro – Step-by-Step
Step 1: Download the Right Firmware
Go to https://mirom.com or the official Xiaomi download site.
Choose Fastboot ROM, not Recovery ROM.
Make sure it matches your model and region (Global, China, India, etc.).
Step 2: Unlock the Bootloader
Download Mi Unlock Tool from Xiaomi’s official site.
Enable Developer options > OEM Unlock + USB Debugging.
Connect your Mi Account, and start the unlock process (may take 168 hours to complete).
Step 3: Install Mi USB Drivers and Mi Flash Tool
Install Xiaomi USB Drivers.
Extract and launch Mi Flash Tool as Administrator.
Step 4: Boot into Fastboot Mode
Power off your phone.
Hold Volume Down + Power until you see the Fastboot logo.
Connect your phone to PC via USB cable.
Step 5: Load Firmware in Mi Flash Tool
Extract the .tgz firmware package.
In Mi Flash Tool, click Select and choose the firmware folder.
At the bottom, choose “clean all” (recommended).
Step 6: Flash the Firmware
Click the Flash button.
Wait 5–10 minutes.
Once it shows Success, your phone will reboot automatically.
Done! You’ve successfully flashed the stock firmware on POCO F7 Ultra / Redmi K80 Pro.
How to Repair IMEI on POCO F7 Ultra / Redmi K80 Pro
Missing or corrupted IMEI can result in no network, no SIM, or “Invalid IMEI” errors.
Legal Note: You can only write the original IMEI assigned to your phone (found on the box or under the battery). IMEI cloning or changing is illegal.
Method 1: QCN File + QPST Tool (Qualcomm-based)
Download QPST Tool and QCN backup for your device.
Boot your phone into DIAG Mode using ADB or engineering app.
Use QPST/QFIL to write the QCN file.
Restart your phone and check the IMEI status using *#06#.
Method 2: Use Professional Tools (Advanced)
If the QCN method doesn’t work, use:
UMT QcFire
Hydra Tool
MRT Dongle
These tools can write IMEI in EDL Mode (Emergency Download Mode), especially helpful for hard-bricked or secured phones.
Why Using the Right Stock Firmware is Crucial
Using incorrect or unofficial firmware can:
Brick your device
Break key features (camera, fingerprint, 5G)
Corrupt IMEI or modem
Void warranty
Using official firmware:
Ensures system stability
Keeps security patches intact
Supports OTA updates
Restores warranty in some cases
Common Flashing Problems and Fixes
Issue
Fix
Phone not detected
Reinstall USB drivers, try different cable/port
Flash tool stuck
Use latest Mi Flash Tool or change firmware
Bootloop after flashing
Enter Recovery Mode and wipe data
IMEI missing
Use QPST or professional repair tool
Flashing fails
Unlock bootloader, re-download firmware
Final Thoughts
The POCO F7 Ultra / Redmi K80 Pro is a powerful flagship, but even premium phones can run into software trouble. Flashing stock firmware and repairing IMEI are powerful tools to recover from serious issues and get your phone running like new.
Key Reminders:
Always use the correct stock firmware
Make sure your bootloader is unlocked
Backup your data
Never flash random IMEI numbers
Done correctly, your device will be smooth, secure, and fully functional again—without a service center.
