The message “The system has been destroyed”** on the Xiaomi Redmi Note 4 screen is one of the most frightening mistakes for smartphone owners, which comes after a failed update, reset, experiment with custom firmware or even for no apparent reason. Unlike typical failures, this error blocks access to the system completely: the phone does not boot, does not respond to buttons, and sometimes even does not even detect the computer.
The problem is caused by damage to critical memory (system, boot or vendor) parts that run Android, and on Redmi Note 4 (codenamed mido), it is often due to:
- 🔄 Interrupted Update (through Interrupted Update) OTA Or Mi Flash Tool)
- 🔧 Incorrect firmware (installation) ROM for another model or version)
- 🛠️ Errors when unlocking the bootloader (for example, through fastboot oem unlock)
- 💥 Hardware failures (eMMC memory damage)
The good news is that in 90 percent of cases, you can bring your smartphone back to life without going to the service center, and then we'll go through all the working methods, from the simplest reset to flashing through the service center. EDL-Important: The methods vary in complexity, and some require a PC, cable USB patience.
1.Diagnosis: Why there was a mistake and what to do first
Before you start repairing, determine the exact cause of the failure, which will help you choose the right method and avoid re-injuring the system.
Pay attention to the behavior of the smartphone:
- 📱 The screen is on, but the system is not loading. → Problem in firmware (system or boot sections)
- 🔌 The phone vibrates, but the screen is black. → Possible loader failure or hardware malfunction
- 💻 The computer can't see the device. → damaged USB-port or controller of the eMMC
- 🔄 Cyclical reboot (bootloop) → kernel or modem firmware conflict
If the error occurred after the update via OTA, most likely, the system partition is damaged. If you tried to unlock the bootloader or flash custom Recovery (TWRP), the problem can be in boot or recovery. In rare cases, a memory controller failure is to blame (especially if the phone fell or overheated).
⚠️ Attention: If the phone does not respond to the power button (no vibration, no charge indicator lights up), the problem may be hardware - disconnected battery plume or burned power controller.
2. Method 1: Hard Reset (Hard Reset) through Recovery
The easiest way, which works 30 to 40 percent of the time, is if you:
- 🔹 The phone is turned on but shows an error
- 🔹 Stock Recovery is available (not available) TWRP!)
- 🔹 You did not block the bootloader (if you blocked it, the method will not work)
Instructions:
- Turn off the phone (press Power + Volume up for 10-15 seconds).
- Press Power + Volume up before the Mi logo appears (download to Recovery).
- From the Recovery menu, select Wipe Data → Wipe All Data (use volume buttons for navigation, power for selection).
- Confirm the reset and wait for completion (5-10 minutes).
- Reboot the phone (Reboot) → Reboot to System).
If after reset, the phone freezes on the logo or shows an error again, move to the next method. Reset does not help if system partitions (system, vendor), not user data, are damaged.
Turn off the phone from charging
Check the battery power (minimum 30%)
Prepare original USB-cable (without adapters)
Remember the button combination (Nutrition) + Loudness up)-->
Method 2: Fastboot firmware (if the bootloader is unlocked)
If hard reset doesn't work and the bootloader is unlocked (you used to fastboot oem unlock), you can flash your smartphone through Fastboot mode, which restores all critical partitions, including system, boot, and recovery.
You'll need:
- 💻 Windows computer (Linux/macOS It will also work, but the instructions for Windows)
- 🔌 Original. USB-cable (better from the set)
- 📥 Fastboot firmware ROM Redmi Note 4 (Mido version)
- 🛠️ Mi Flash Tool (official from Xiaomi)
Steps:
- Download the official firmware for Redmi Note 4 (Choose the Fastboot version instead of Recovery!. Unpack the archive into a folder without Cyrillic characters (e.g., unpack the archive in a folder, C:\mido_fastboot).
- Install the Mi Flash Tool and Qualcomm drivers (if Windows doesn’t recognize your phone in Fastboot).
- Turn off the phone and press Volume down + Power to enter the Fastboot (a hare in a hat-eared hat will appear).
- Connect your phone to your PC. In the Mi Flash Tool, select the firmware folder, select Clean All mode, and press Flash.
- Wait for the end (5-15 minutes) and the phone will reboot automatically.
If the process ends with an anti-rollback error, you are trying to flash an older version of MIUI than the one you installed earlier, in which case download the latest stable firmware from the official website.
What to do if the Mi Flash Tool can't see your phone?
Method 3: Recovery through EDL-Mode (if Fastboot is not working)
If the phone is not included in the Fastboot (does not respond to buttons, the screen is black) or the firmware through it ends in an error, the last software method remains — EDL-Emergency Download Mode is an emergency boot mode that allows you to flash your phone even with a damaged bootloader.
⚠️ Warning: The method requires an authorized Xiaomi account (for new devices) or bypassing protection through a test-point. EDL.
Instructions:
- Download the firmware for EDL (usually a file with the.tgz or.mbn extension). This archive will do for Redmi Note 4.
- Unpack the firmware and install Qualcomm drivers (if not installed).
- Turn off your phone. Close the test-point or use the Deep Flash Cable. EDL).
- Connect your phone to your PC. The Device Manager should have a Qualcomm HS-USB QDLoader 9008.
- Run the Mi Flash Tool, select the firmware and press Flash. Choose clean all mode.
| How to enter EDL | Pluses | Cons |
|---|---|---|
| Test-point (sweatering) | It works on 100% of devices. | Requires phone disassembly and rations |
| Deep Flash Cable | You don't have to take out the phone. | You need to buy/build a cable. |
| ADB (adb reboot edl) team | Simple and quick. | It only works if it's on. USB-debugging |
If the phone does not turn on after firmware through EDL or shows the same error, two options are possible:
- 🔹 The firmware is not suitable for your version of the Redmi Note. 4 (For example, they made mido instead of mido_global).
- 🔹 EMMC memory controller damaged (chip replacement required).
Method 4: Checking for hardware faults
If all the software methods didn't work, the problem could be hardware. Redmi Note 4 most often fails:
- 💾 Memory controller eMMC (symptoms: phone not detected in the Fastboot/EDL, chargeless)
- 🔋 Battery or power controller (symptoms: no charging response, accidental reboots)
- 📶 Antenna module (if the error occurred after the fall)
How to check:
- EMMC Memory Test: Connect your phone to EDL and use the eMMC Tool to check the chip's health, and if BAD status requires a replacement.
- Power check: Connect the battery to work (if you have a spare battery) if the phone responds, the battery is a problem.
- Visual inspection: Disassemble the phone and check the board for burnt-out elements, swollen capacitors, or disconnected plumes.
Critical information: Redmi Note 4 with Snapdragon 625 processor often fails eMMC memory (Samsung KLMBG4GE4A chip).If the phone is not stitched into EDL and is not defined as QDLoader 9008, with a 95% probability you need to replace the memory chip.
⚠️ Note: If you have no experience in the squashing BGA-Don’t try to replace the eMMC yourself, contact a service center with infrared soldering equipment (e.g. Quick station). 861DW). Cost of repair: 3-5 thousand rubles (2026).
6. Frequent mistakes and how to avoid them
Many users make the problem worse by trying to restore the phone using the wrong methods, and here are the most common mistakes and how to avoid them:
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| The firmware is the wrong version MIUI (For example, mido instead of mido_global) | Brick (complete inoperability), anti-rollback error | Download the firmware only from the official website, check the model |
| Use of non-original cable for firmware | Communications breaks in process, damage USB-port | Use a cable from the kit or a certified USB 2.0 |
| Interrupting the firmware (pulled the cable, turned off the light) | Damage to the bootloader, transition to the state of "qualcomm hs-usb qdloader 9008" without reaction | Switch from a UPS or laptop with a full charge |
| Attempt to unlock the bootloader on a phone with a tied Mi Account | Device lock (requires the username / password of the previous owner) | First untie your account in the settings or through the Xiaomi website |
💡
Before you use Fastboot or EDL, disable antivirus software (such as Avast or Kaspersky) that often blocks utilities like the Mi Flash Tool, leading to critical error or flash write failure errors.
7. Alternative methods (if nothing has worked)
If all methods are exhausted and the phone still doesn’t work, try:
- 🔧 Firmware through SP Flash Tool (if the phone is on a MediaTek processor – but Redmi Note 4 on Snapdragon, so the method is not suitable).
- 📱 Install custom firmware (such as LineageOS or Pixel Experience) via TWRP. It only works if the loader is unlocked!
- 💰 Average cost of repairing Redmi Note 4 in 2026: Replacing eMMC: 3,000–5,000 ₽ Battery replacement: 1,500–2,500 ₽ Diagnostics + firmware: 1,000-2,000 ₽
💡
If the phone is defined in EDL as Qualcomm HS-USB QDLoader 9008, but the firmware doesn't pass - try another version of the Mi Flash Tool (e.g. 2018.5.4.0 instead of the latest). Older versions sometimes work better with older models.