How to Launch Xiaomi ADB Fastboot Tools JAR: Complete guide to unlocking and firmware

Xiaomi utility ADB Fastboot Tools in.jar format is a powerful tool for owners of smartphones Xiaomi, Redmi and others. POCO, It allows you to perform operations that are not available through standard settings, and it can unlock the bootloader, flash custom recovery (for example, for example, TWRP), Delete embedded applications, change the firmware region, and even restore bricks after a failed manipulation, but many users face difficulties at the start-up stage: the program does not open, gives errors or simply does not respond to commands.

In this article, we will discuss all the ways to launch XiaomiADBFastbootTools.jar, from installing the necessary software to solving typical problems. Special attention will be paid to security – the wrong actions can turn your smartphone into a “brick”, so every step is accompanied by warnings and tips. If you're new to the world ADB Start with the section on preparation: without drivers and Java, the tool simply will not work.

For power users, we'll give you advanced commands and scripts that automate routine operations, and if you've tried to run the utility and you've got an error, there's a section at the end of this article that looks at the most common problems (from Java not found to device not found) and their solutions.

What is Xiaomi? ADB Fastboot Tools and Why You Need It JAR-file

Xiaomi ADB Fastboot Tools is a graphical shell for working with low-level protocols ADB (Android Debug Bridge and Fastboot, designed specifically for Xiaomi devices. Unlike standard console commands, the tool offers a user-friendly interface with buttons, lists of available operations and automatic identification of the connected device.

The.jar format (Java Archive) means that the program is written in Java and requires an installed virtual machine. JRE (Java Runtime Environment) to run. This is a cross-platform solution: the utility runs on Windows, macOS and Linux if Java version 8 or later is installed.

With XiaomiADBFastbootTools.jar you can:

• 🔓 Unlock the bootloader in the official way through the Mi Account.
• 📱 Stripping Custom Recovery (TWRP, OrangeFox) and kernels.
• 🗑️ Remove system applications (bloatware) without root rights.
• 🌍 Change the firmware region (for example, from Chinese to global).
• 🔄 Restore the device after a “soft brick” (when the smartphone does not boot, but is determined in Fastboot).

Important: the tool does not replace the official Mi Unlock Tool for unlocking the bootloader, but can be used in parallel for other operations. For example, after unlocking through Mi Unlock, you can immediately flash the tool. TWRP via Xiaomi ADB Fastboot Tools without going to the console.

Preparation for launch: what to set in advance

Before the first launch of XiaomiADBFastbootTools.jar, you need to prepare the system and device, and skipping any of the steps will lead to errors, from the lack of response of the program to the inability to identify the connected smartphone.

Here are the minimum requirements for the job:

• 🖥️ Windows computer 7/10/11, macOS or Linux (based distribution) Debian/Ubuntu).
• 📱 Smartphone Xiaomi/Redmi/POCO plug-in USB.
• 🔌 Cable USB Type-C (preferably original or certified).
• 💾 Free disk space (minimum 500 MB for temporary files).

Mandatory PO:

1. Java Runtime Environment (JRE) version 8 or later, download from the official website.
2. Drivers. ADB And Fastboot for your OS. Windows will do the Mi package. PC Suite or manual installation via Device Manager.
3. Archive with the utility XiaomiADBFastbootTools.jar (up-to-date version look at the XDA Developers or Telegram channels of developers).

⚠️ Note: If you are using Windows, disable driver signatures before installing ADB-To do this, type in the command line (cmd on behalf of the administrator): bcdedit /set nointegritychecks on After rebooting the PC, drivers will install without errors.

Step-by-step: how to start XiaomiADBFastbootTools.jar

Now, to the launch itself, follow the instructions in strict order, and that minimizes the risk of error.

Step 1: Install Java

If Java is not installed, download it and install it from the official website. After installation, check the version in the command line:

java -version

You should see a line of the form java version "1.8.0_301" If the command doesn't recognize, reinstall Java and restart the PC.

Step 2. Launch JAR-file

There are three ways to run XiaomiADBFastbootTools.jar:

1. Double Click: Just double-click on the file. If Java is installed correctly, the program window will open.
2. Through the command line: Open the cmd in the file folder and type: java -jar XiaomiADBFastbootTools.jar
3. Creating a shortcut: Right-click on the file → Create a shortcut. Then open the properties of the shortcut and add the object to the field before the java path. -jar.

Step 3: Connecting your smartphone

On the phone, turn on:

• 🔧 Developer Mode (7 times click on Version) MIUI In Settings → The phone).
• 🔌 Debugging by USB (Settings → Additionally. → For developers).
• 🔒 Permission to install through ADB (same-menu).

Connect your phone to your PC with a cable and select File Transfer (not Charge!) mode. In the program, press Refresh - the device must be determined.

Install Java 8+|Download the current version JAR-file|Enable debugging on USB phone-on|Connect the original cable|Launch the program on behalf of the administrator-->

Main functions and how to use them

Xiaomi's interface ADB Fastboot Tools is divided into tabs, each of which is responsible for a certain type of operation.

1. Unlocking the bootloader (Bootloader)

Official unlocking requires a Mi Account and waiting 7-15 days (on new devices).

1. Go to the Unlock tab.
2. Click Bind Account and log in.
3. After confirmation, press Unlock Bootloader.

The phone will reboot to Fastboot and the unlocking process will begin.

2. Custom recovery firmware (TWRP)

To install TWRP:

1. Download the recovery image for your model (e.g, twrp-3.6.2-0-davinci.img for Redmi K20 Pro).
2. In the utility, go to the Flash tab.
3. Select the image file and click Flash Recovery.

After the firmware load in TWRP, hold on + Volume Up.

3. Removal of system applications

To remove bloatware (such as Mi Browser or Mi Video):

1. Connect your phone in ADB mode.
2. Go to the Debloat tab.
3. Select apps from the list and click Uninstall.

⚠️ Note: Do not remove system components called com.android. or com.miui. – this may cause your phone to fail!

4. Change of the firmware region

To move from Chinese firmware to global:

1. Download the full firmware package (.tgz) for your model.
2. In the utility, select the Flash tab. → Flash Firmware.
3. Please enter the archive and wait until it is completed.

It takes 5-10 minutes, and after the reboot, the phone will be reset to the factory settings.

Common mistakes and their solutions

Even with the right training, users are faced with errors, and let's look at the most common ones.

Error: "Waiting for device"

If the program is suspended at this stage:

• 🔄 Reconnect the cable (try another port) USB).
• 📱 Reboot your phone and turn on the debugging again.
• 🖥️ Reinstall the drivers ADB using Zadig (utility for forced installation of drivers).

Error: "Invalid IMEI" after firmware

If he disappeared after manipulation IMEI:

1. Restore the backup of nvram (if you have backup in the TWRP).
2. Use the utility. SN Writer for flashing IMEI (requires authorization).
3. Contact a service center – self-recovery may be illegal in some countries.

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If the utility does not see the device in Fastboot, try manually transfer the phone to this mode: turn off the smartphone, then press the Power. + Volume Down before the appearance of a bunny with the inscription Fastboot.

How to avoid turning your phone into a brick

Work with ADB And Fastboot is always risky, because a team error or incompatible firmware can make the device inoperable:

1.Always do a backup.

Before any manipulations, create a backup copy:

• 📁 NVRAM (contain IMEI and serial number).
• 📱 Full backup through TWRP (including data).
• ☁️ Sync your contacts and files with Google Drive or Mi Cloud.

2. Check firmware compatibility

For example, the firmware from the Redmi Note 10 Pro (sweet) will not work for the Redmi Note 10 (mojito).

• In Fastboot, enter fastboot getvar product
• In settings: Settings → The phone. → Version. MIUI → Code name.

3. Watch the battery charge

If the battery runs out during firmware, the device may fail. Charge the phone to at least 50% before work begins.

4. Do not interrupt the process

Do not turn off the cable or restart your PC during:

• Unlock the loader.
• Firmware recovery or firmware.
• Installation of updates through ADB sideload.

⚠️ Note: If during the firmware through Fastboot the program has issued an error FAILED (remote: 'Partition not found'), do not try to repeat the operation - this can damage the partition.

Alternative methods: if JAR-file not running

If XiaomiADBFastbootTools.jar refuses to launch despite all efforts, there are alternative options:

1. Use the portable version (EXE)

Some developers are releasing a utility in.exe format that doesn't require Java. JAR-version.

2. Launching through Terminal (macOS/Linux)

On macOS or Linux, open the terminal in the file folder and type:

chmod +x XiaomiADBFastbootTools.jar


java -jar XiaomiADBFastbootTools.jar

If an Unable to access jarfile error appears, check the file permissions.

3. Virtual machine with Windows

If you are on Linux and can’t run.jar, install a Windows virtual machine (like VirtualBox) and repeat the process there.

4. Manual commands ADB/Fastboot

All the operations from the utility can be done through the console, for example, to flash TWRP:

fastboot flash recovery twrp.img


fastboot boot twrp.img

List of commands for popular operations:

• 🔓 bootloader Unlocking: Fastboot Flashing Unlock
• 📱 Images from fastboot flash [partition] [file.img]
• 🔄 Recovery: Fastboot boot reboot recovery.img

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If the utility doesn’t start, check the Java version first. -version). The problem is often the lack of or outdated version. JRE.

FAQ: Answers to Frequent Questions