Owners of Xiaomi Redmi Note 5A (codename ugglite or ugg) smartphones often face the need to obtain advanced access rights to the system, which may be required to install custom firmware, remove system debris or unlock the device after a forgotten password. The process of removing restrictions from the bootloader on this device is standard for the Xiaomi ecosystem, but has its own nuances, especially in the context of the requirements for the Mi Account.
Now, there are two very different concepts: unlocking a bootloader to modify the system, and unlocking a screen with a forgotten pattern lock. While the first is a routine and requires waiting, the second is an emergency data reset. It's important to note that modern MIUI protections often require proof of ownership of an account that was previously associated with the device.
Before you start taking action, you need to make sure that your model is compatible. The Redmi Note 5A lineup came in several versions, and the tools for them may differ. Wrong actions can lead to a software failure, so carefully study the theoretical part before practice.
Preparation for unlocking the Xiaomi bootloader
The initial phase is critical to the success of the entire operation: You will need a stable internet connection, as Xiaomi servers will check the status of your device in real time, and also make sure that the battery is at least 60% so that the phone does not turn off at the most inopportune time.
The first step is to link your account. Go to Settings → Advanced Settings → Developer. If it is hidden, click 7 times on the MIUI Version in About Phone. In the developer menu, turn on Debugging over USB and select Mi Unlock Status. Here you click on the add account button.
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Use the original. USB-cable USB 2.0 on the PC motherboard to avoid communication errors during the unlocking process.
Once the account is tied, the system will ask you to wait.The standard waiting time for global firmware versions is 168 hours (7 days), however, for some regions or older models, such as the Note 5A, the timer can be reduced to 360 hours or even less.
⚠️ Note: Once the account is linked to the bootloader, you are not allowed to perform a full Hard Reset or flash the device before the wait timer expires. This will reset the counter, and the procedure will have to start again.
Required tools and drivers
You will need a Windows computer to work with the bootloader. macOS and Linux operating systems require more complex command line manipulations, so in this guide we focus on Windows 10/11. You will need to download the official Mi Unlock Tool utility from the developer's website.
The critical element is to install the right drivers. Without them, the computer will not see the phone in Fastboot mode. It is recommended to install Universal ADB Driver and Qualcomm USB Driver, since the Redmi Note 5A is built on a Snapdragon processor. If the drivers get incorrect, you will see unknown hardware in the Device Manager.
☑️ Checking readiness for unlocking
Also, you should prepare a firmware file in advance if you plan not only to unlock the device, but also to reflash it. Note 5A is relevant stable versions of MIUI 9, 10 or 11 based on Android 7 or 8. Download firmware should only from proven resources, such as the official site miui.com or xiaomiui.net.
The process of unlocking the bootloader (Bootloader)
When the waiting timer is up, you can move to the practical part: turn the smartphone off in Fastboot mode: turn the device off completely, then press the volume button and connect the USB cable to the computer. The screen should show a hare in a hat-eared android repairing, and the inscription FASTBOOT.
Run the Mi Unlock Tool program on your computer and log in to the same Mi Account you previously linked. Press Unlock. The program will check the device. If all conditions are met, a warning will appear that all data will be deleted. Confirm the action.
The unlocking process:
1. Connection to Fastboot
2. Verification by Xiaomi server
3. Unlocking the lock
4. Automatic rebootIt takes between seconds and a couple of minutes, and if it succeeds, the phone will automatically reboot, and the boot screen will show an open lock icon, which means that the bootloader is unlocked, and you can now install customized recaps (TWRPs) and modified firmware on the device.
Password reset and screen unlocking
If by "unlocking" you meant accessing the system with a forgotten pattern lock or PIN-The situation is resolved by completely deleting user data. 5A This is done through the Recovery menu. Press the power button and turn up the volume at the same time before the logo appears.
From the Recovery menu (which can be in Chinese or English), select Wipe Data, then Wipe All Data. Confirm. Once the procedure is complete, the phone will return to factory status. However, Google FRP and Mi Account Lock protections come into effect.
If the phone has been enabled with Internet and sync, the device will need to enter the password from the Google account or Mi Account that was on it before the reset, which is a security mechanism against theft, without entering this data, you will not be able to fully use the smartphone.
| Unlocking method | Data security | Time required | The risk of blocking |
|---|---|---|---|
| Official Mi Unlock | Complete removal | 7-15 days (waiting) | Low. |
| Reset via Recovery | Complete removal | 5-10 minutes | Medium (FRP/Mi Lock) |
| Service mode (EDL) | Complete removal | 10-20 minutes. | High (requires an account) |
Resolving errors and problems when unlocking
Often users encounter an error called Couldn't verify device or Error 10009. The first error usually means that the account was not tied in advance or not enough time has passed since the link was made. The second error is most often associated with network connection problems or the locking of Xiaomi servers by the provider.
To solve network problems, try using mobile Internet (distribution from your phone) instead of Wi-Fi, or change the phone. DNS-The use of proxy servers also helps, as official unlock servers may not be available in some regions without additional settings.
What if Mi Unlock is 99% locked?
If the utility produces an error related to the account version, make sure you are not using a corporate or restricted account, and check if the computer has an antivirus that blocks the program’s connection to the Internet.
Firmware of the device after unlocking
Once you have the download rights, you can install TWRP Recovery, which allows you to do full backups and install update files manually. There are many stable ports for the Redmi Note 5A.
To install the firmware via Fastboot, use the command fastboot flash recovery twrp.img (after renaming the firmware file). Then, by pressing the exit buttons from Fastboot, you can enter the recovery mode. From there, a zip archive with the new system is selected through the Install point.
Remember that unlocked bootloaders reduce device security. Bank applications may not work. Bypassing this restriction will require installing security patches like Magisk and setting up root-rights concealment for specific applications.
⚠️ Warning: Unlocking the bootloader will automatically void the warranty on the device (if it was still in effect).In addition, security-related features such as Mi Pay or some of the devices' work. DRM-keys (widevine) L1), They may stop functioning or be reduced to a level L3.
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Unlocking the bootloader is an irreversible guarantee action, but reversible in terms of software: you can always return the stock firmware and lock the bootloader back through the Mi Flash Tool.