Sysdump on Xiaomi: A Complete Guide to Creating and Analyzing a System Dump

When a Xiaomi smartphone starts to behave in an unstable way — arbitrarily restarting, slowing down or issuing critical errors — standard diagnostics through the settings menu is often useless. In such cases, service center engineers and experienced users resort to creating a sysdump. This file contains detailed logs of Android, kernel, drivers and hardware components, allowing you to identify the cause of the failure at the software or hardware level.

Unlike the usual logs that can be obtained through ADB The logcat, sysdump on Xiaomi devices includes advanced telemetry: data on battery status, processor temperature, communication module errors, camera performance, and even information about the latest critical events before turning off. Xiaomi’s official documentation is closed, and open source information is fragmented and often outdated, and in this guide, we structured all the relevant ways to create a dump, including hidden engineering teams and work with MiFlash.

What is sysdump and why is it needed?

A system dump is an archive of snapshots of a device’s state at the time it is running or immediately after a failure. In the context of Xiaomi, it includes:

• 📄 Logs of the kernel (dmesg, last_kmsg) — Driver errors, critical processor and memory failures.
• 🔋 Battery data – voltage, current, temperature, charging cycles (relevant for diagnosing bloating or rapid discharge).
• 📡 Logs of the modem - network errors, problems with the SIM-card 4G/5G.
• 🎥 Camera information – module initialization failures, focusing errors.
• 🖥️ Process pictures – list of running applications, use of RAM and CPU.

The main application of sysdump:

1. Diagnostics of hardware faults that do not appear in standard tests (for example, defects in the motherboard or power controller).
2. Analysis of the causes of bootloop (logo looping) or spontaneous reboots.
3. Warranty Confirmation – Xiaomi service centers often require a dump for free repairs.
4. Debugging custom firmware or cores (for enthusiasts engaged in modification) MIUI).

⚠️ Note: Sysdump is not a backup of user data; it only contains technical information about the system and does not include photos, messages or installed applications.

Preparing the device for the creation of sysdump

Before collecting the dump, you need to follow several critical steps to avoid data loss or incorrect log:

1. Battery charge: Make sure the charge level is above 50%. The dump process can take up to 10 to 15 minutes to create, and if the device turns off during collection, the file will be corrupted.
2. Free space – the internal drive should be at least 1-1.5 GB of free space. the dump takes from 300 MB to 1 GB depending on the model.
3. Disabling locks – if the device is configured graphical lock or PIN-code, temporarily delete them through Settings → Lock screen. Some dump collection methods require unlocked access.
4. USB-Debugging – activate it in Settings → The phone. → Version. MIUI (Press 7 times, then return to the Additional Settings → For developers → Debugging by USB.

For models with an unlocked bootloader (bootloader) is also recommended:

• 🔓 Install the latest version of the Mi Unlock Tool (if you plan to use MiFlash).
• 🖥️ Connect the device to a PC with installed Xiaomi drivers (you can download on the official website).

Battery charge >50%|Free seat >1GB|USB-debugging is on|Screen lock disabled|Xiaomi drivers installed on PC-->

If you are assembling a dump for a service center, check their required format. Some Xiaomi SCs only accept dumps created through MiFlash in mode. EDL (Emergency Download Mode).

How to create sysdump on Xiaomi

There are three main methods for obtaining a system dump, which are complex and large, depending on the state of the device (whether it turns on) and your technical skills.

Let us consider each method in detail.

Method 1: Engineering menu (for working devices)

The easiest way to do this is to connect to a PC, and it's for smartphones that are on and responsive to touch.

1. Open the Phone app and type the combination: ##4636## This will open the Testing menu.
2. Go to the phone information section (or Usage statistics on global firmware).
3. Click on the three dots in the upper right corner and select Generate bug report.
4. Wait until the process is completed (may take a while). 5–10 The file will be saved in the folder. /sdcard/bugreports/.

Limitations of the method:

• 🚫 Does not collect data about hardware errors (for example, problems with the Wi-Fi module or NFC).
• 🚫 The kernel logs (dmesg) can be truncated if the device has been running for a long time without restarting.

💡

If the phone information section is missing, try entering the ##284## combination, which is an alternative path to the engineering menu on some Redmi models. POCO.

Method 2: Through ADB (logging)

This method allows for a more complete dump, including kernel logs and hardware component status data, which requires a connection to a PC.

1. Connect your smartphone to your computer via USB and confirm the debugging permission.
2. Open the command line (or Terminal) macOS/Linux) and perform: adb shell su sysdump -o /sdcard/sysdump.zip If root rights are not available, use the alternative command: adb bugreport. /sdcard/sysdump.zip
3. Copy the file on PC: Adb pull /sdcard/sysdump.zip

For models with MIUI 12+ You may need an additional parameter:

adb shell am broadcast -a com.xiaomi.mitv.debug --es action sysdump

⚠️ Note: On devices with bootloader blocked, the su command will not work. In this case, use adb bugreport, but note that the amount of data collected will be less.

Method 3: Through MiFlash in mode EDL (brick-to-brick")

If the smartphone does not turn on (hangs on the logo or does not fully respond), the only way to get a dump is to put it into mode. EDL (Emergency Download Mode) and MiFlash.This method requires an unlocked bootloader and a special cable (or circuit test points on the board).

1. Download and install MiFlash (the latest version can be found at xiaomiflash.com).
2. Put the device in mode EDL: For working devices: adb reboot edl. For bricks: press Volume up + Loud down and plug in. USB-For the Redmi Note models. 8/9: It may be necessary to close the testpoints on the motherboard.

MiFlash

Select

Refresh

COM-port

miflash.exe dump -port COMX -output C:\sysdump\

(substitute COMX port).

The dump file will be saved in the specified folder in.tar or.zip format, its size can reach 1.5 GB.

sysdump analysis: what to look for in the logs

The resulting archive contains dozens of files with extensions.txt,.log and.dmesg. For diagnostics, the following sections are important:

• 📜 dmesg.txt is the kernel logs. Look for lines with error, fail, panic, or exception: [ 12.345678] mmc0: error -110 whilst initialising SD Card indicates a problem with a memory card or slot.
• 🔋 battery_log.txt — Battery data. Critical parameters: voltage_now < 3.4B is a deep discharge. temp > 45°C - overheating. cycle_count > 500 — battery-wear.
• 📡 modem_log.txt — network errors. RRC Connection Reject or SIM not ready to signal problems with the modem or SIM-card.
• 🖥️ top.txt: resource use, if the mediaserver process consumes >50% CPU, It could be the cause of the lags.

For easy analysis, use text editors that support regular expressions (e.g. Notepad).++ or VS Code! filter logs by keywords:

If you are not sure about the interpretation of logs, upload the archive to the forums. 4PDA or XDA Developers – there are sections with analysis of dumps for specific models Xiaomi.

Engineering menu|ADB|MiFlash (EDL)|I haven't tried it yet.-->

Common Errors in Creating Sysdump and Solutions

Even when following instructions, users often encounter problems, and here are typical scenarios and ways to solve them:

• 🔌 Device not defined in MiFlash Check if Qualcomm drivers are installed HS-USB QDLoader 9008 (You can download it here. Try another one. USB-port (preferably) USB 2.0 on the back of the PC. If you're using Windows 11, Turn off driver signature verification via bcdedit /set nointegritychecks on.
• 📱 Dump is not created through the engineering menu on some firmware MIUI Error Reporting is disabled. Enable it through Settings → Special facilities → Menu for bug report. /sdcard/bugreports/ empty, check the access rights to the storage (Settings) → Annexes → Permits → Memory).
• 🖥️ ADB Error "device unauthorized" Delete adbkey.pub file in folder %USERPROFILE%\.android\ And reconnect the device. On your smartphone, reset the debugging permissions: Settings. → Additionally. → For developers → Withdraw permits USB-debugging.

⚠️ Attention: On devices with MIUI 13+ Android 12+ The adb bugreport command can create incomplete dumps due to privacy restrictions. -c "sysdump -o /sdcard/sysdump.zip", But you'll need root rights.

How to transfer sysdump to Xiaomi Service Center

If you have created a dump for warranty repair, it must be properly issued and transferred to the SC. Here is a step-by-step instruction:

1. Archive the file – if the dump consists of multiple folders, pack them in.zip or.rar without a password.
2. Name the archive by template: Sysdump_[Model]_[IMEI]_[Date].zip Example: Sysdump_RedmiNote10Pro_123456789012345_20260515.zip.
3. Attach a description of the problem in the text file description.txt with the indication: When the malfunction appeared (after a fall, update, etc.). Frequency of occurrence (constantly, once a day, etc.) Actions in which the error occurs (for example, "when shooting video on the main camera").

Download the archive.

Google Drive

Yandex Disk

timeless

Contact the SCC.

• 📧 By e-mail: support@xiaomi.com (provide the order number or IMEI).
• 📱 Through chat in the Mi Community app (Subsection "Support").
• 🏢 When visiting in person - write down the archive on a flash drive and transfer it with the device.

The time period for reviewing a dump in the SC is usually 3-5 working days, and if the problem is confirmed, you will be offered repairs on warranty or for a fee (depending on the diagnosis).

💡

Xiaomi service centers in Russia and CIS often refuse to accept dumps created through the Internet. ADB, You only need to get your MiFlash files!

sysdump alternatives for Xiaomi diagnostics

If you can not create a full-fledged dump, use alternative methods of collecting diagnostic information:

• 📊 Mi Diagnostics is Xiaomi’s official hardware testing app, available from the Mi App Store or APKCombo, which checks display, camera, speakers, sensors and battery.
• 🔍 AccuBattery – Analyzes battery status (real capacity, wear, temperature) and is useful for rapid discharge diagnosis.
• 📡 NetMonster – displays detailed information about the network (signal level, connection type, modem errors).
• 🖥️ CPU Throttling Test – checks the processor’s trottling (decreased performance due to overheating).

For low-level diagnostics (e.g., checking the integrity of eMMC or UFS-drive) use engineering commands:

adb shell


su




cat /proc/mtd # Checking memory partitions




smartctl -a /dev/block/mmcblk0 # eMMC test (requires BusyBox)

FAQ: Frequent questions about sysdump on Xiaomi