The situation where the Xiaomi smartphone suddenly stops responding to commands and begins to endlessly reboot, causing the owner to panic is quite common.This phenomenon, known as bootloop, can be caused by both a software failure and a serious hardware malfunction. Device owners face the Mi or Redmi logo appearing on the screen, the device buzzes, but the operating system does not load, returning the user to the beginning of the cycle.
The reasons for this behavior can be many, from an unsuccessful upgrade to a critical battery discharge or physical damage to the board. It is important to understand that if the phone does not turn on for more than 15 minutes in cycling mode, acting alone without understanding the process can lead to complete loss of data. However, in many cases, the gadget can be brought back to life using built-in recovery tools or flashing.
The first thing to do is to stay calm and not try to randomly press the volume buttons, as this may not trigger the right modes. Next, you should conduct an initial diagnosis to understand at what stage the failure occurs. If the device reacts to the charger connection and vibrates, then the power controller is alive and the chances of software recovery are high.
The main causes of cyclical reset
To effectively combat the problem, you need to pinpoint the source of the problem. Most often, a cyclical reboot on Xiaomi smartphones is due to software conflicts. This can be an incorrect update of the MIUI system when files are loaded with errors, or an attempt to install custom firmware without first unlocking the bootloader, in which case the system can not find the correct path to the kernel and goes into reboot.
But hardware factors can't be discounted, too. A common cause is a battery failure that can't produce the current needed to start the processor, or a battery bloating, and problems can also be related to sticking control buttons, especially the power button, which is physically clamped and gives a constant start signal.
- 🔋 Critical wear or bloating of a battery that does not provide stable voltage.
- 📱 Program Conflict After Updating MIUI or install beta versions of the firmware.
- 🔌 Damage to the display plume or buttons causing short circuit in the control circuit.
- 💾 Damage to the system partition (eMMC or UFS) owing to sudden power outage.
⚠️ Warning: If the device fell or came into contact with water before the problem occurred, the probability of hardware failure is more than 80%, in which case software recovery methods can be useless and even dangerous.
Sometimes the problem is that the system partition is packed, the operating system can't create the temporary files it needs to run, and it goes into a rebuke, and you can check this if you can get into the Recovery menu for a few seconds, but most of the time, the user sees only the logo.
Primary diagnosis and mild reset
Before we get to the complicated firmware manipulations, we need to eliminate simple power controller failures, and this requires a forced reboot procedure that helps to reset static voltage and restart hardware components. Most Xiaomi and Redmi models require you to press the power button for a long time, sometimes in combination with a volume button.
If the phone reacts to buttons being pressed by vibration or the appearance of a logo, but then goes out again, try turning off all external factors. SIM-microSD card and memory card, if installed: often corrupted file on flash card or short circuit in contacts SIM-Cards can block normal system loading.
It's also worth checking the on button. On older models with mechanical buttons, the mechanism could wear out and stick in the "press" position. A slight tap on the end of the device or a repeated quick press of the button sometimes helps unlock the mechanism. If the button goes down, the phone will constantly try to turn on and off immediately.
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Try connecting your phone to your computer through USB-If the PC makes the device's connection sound or defines it as "Qualcomm" HS-USB QDLoader, which means the processor is alive and the phone is in mode. EDL, This opens up opportunities for deep recovery.
Using Recovery Mode to Reset Settings
If the soft reset didn’t work, the next step is to use the built-in Recovery menu.This is a special mode that can be downloaded from a separate memory partition, which allows you to control the system even when the main OS is not working. To get there, you need to turn off the phone (if it is in a loop, wait for the screen to go out) and press the Volume + and Power buttons simultaneously.
When a menu with a few items appears on the screen (usually in English or Chinese), the volume buttons are controlled, and the power button is selected. You are interested in Wipe Data or Clear Data. It is important to understand that this operation will completely delete all user data: contacts, photos, messages and installed applications.
☑️ Reset algorithm via Recovery
Once the reset is confirmed, the phone will start cleaning the partitions. The process can take from 30 seconds to several minutes. Upon completion, select Reboot -> Reboot to System. If the problem was caused by a software conflict or memory overflow, the device should boot normally, but already in a store-like state.
⚠️ Note: When performing a data reset, make sure that the battery level is at least 40%.If the phone turns off during partition formatting, it will be extremely difficult to restore it without special equipment.
In some cases, especially on global firmware versions, a reset may require you to enter a Google or Mi Account that has been synced to the device before, a standard theft protection procedure that cannot be avoided without a password.
Recovery via Fastboot and Computer
If Recovery is unavailable or the data reset doesn't work, Fastboot comes to the rescue. It's a low-level protocol that allows you to interact with the phone bootloader via your computer. To enter this mode, press the Loudness and Litanie buttons. The Fastboot logo should appear on the screen with the image of a rabbit fixing an android.
To work in this mode, you will need a computer with Windows OS, USB-Good quality cable and installed Mi Flash Tool or Xiaomi ADB/Fastboot Tools. When you connect your phone, check the Device Manager, which is defined as the Android Bootloader Interface. If the device is identified, then there is communication with the hardware, and you can try flashing the firmware.
The most reliable way is to completely flash (Clean All). You will need to download the official firmware for your particular model from miui.com. The firmware file should have the.zip extension (for Mi Flash) or be unpacked. In the Mi Flash Tool, select the path to the firmware, press Refresh, make sure the device is visible, select the Clean all option and press Flash.
| Parameter | Recovery Mode | Fastboot Mode | EDL Mode |
|---|---|---|---|
| Appointment | Resetting and updating OTAs | Firmware through PC | Rescue of the bricks |
| Data retention | Maybe (Update) | Only with loss. | Only with loss. |
| Difficulty | Low. | Medium | Tall. |
| I need a PC. | No. | Yes. | Yes. |
What if your computer doesn’t see your phone in Fastboot?
EDL mode and deep firmware
When the phone doesn’t respond to either Recovery or Fastboot, the last software option is Emergency Download (EDL) mode, which waits for firmware to go directly into memory, bypassing the bootloader. On modern Xiaomi screens, this mode is often hidden, and the phone just shows a black screen when you connect to the PC, but the Qualcomm HS-USB QDLoader 9008 port appears in the device manager.
Signing into EDL on bootloader-locked devices often requires an authorized Mi (Mi Auth) account, which only authorized service centers have, but on older models or devices with unlocked bootloader, you can enter this mode by combining buttons or parsing the phone and closing test points on the board.
The firmware process in EDL is similar to Fastboot, but requires Qualcomm specific drivers. If the phone is defined as QDLoader, the chances of recovery are very high, even if the memory partitions were damaged. The Mi Flash Tool program is able to rewrite all partitions clean, eliminating logical errors of the file system.
⚠️ Attention: Entering mode EDL on the new Xiaomi models (approximately with the 2019-2020 The year of issue) without an authorized service center account is not possible software. Attempts to use workarounds can lead to the blocking of the device on the Internet. IMEI.
If EDL mode doesn’t help, or the computer doesn’t respond to the connection at all (no sound, no reaction in the Device Manager), the problem is almost certainly hardware-based, it could be a plume break, a power controller fails, or the motherboard itself is damaged.
Hardware malfunctions and when to carry in service
There are a number of symptoms that indicate that software methods are powerless: If the phone warms up in the camera or processor area even when it is turned off when connecting to a charge, this is a sign of a short circuit on the board, in which case further attempts to turn on can lead to fire or complete failure of the device.
A common cause of cyclical reboots on older models is memory degradation or CPU failure due to overheating. If the phone was hot or dropped before the problem, contact between the chip and the board (cracks in BGA soldering) could be disrupted.
- 🔥 The phone heats up strongly in the bottom or near the camera immediately after charging.
- 🔌 The device consumes current (visible on the power supply), but the screen remains black and there is no vibration.
- 💧 On the body or inside the connectors, traces of oxidation or liquid ingestion are visible.
- 📉 The phone will run out of charge in a few minutes or will not hold a charge after full charge.
If hardware problems are detected, the only correct solution is to contact a specialized service center, the masters will diagnose the current consumption, check the main voltages and, if necessary, replace the battery or restore soldering components.
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If the phone does not turn on, warms up or is not determined by the computer in any of the modes - do not waste time on firmware, this is a hardware breakdown that requires soldering or replacement of components.