Why unlock the bootloader on the Redmi 7A?
The bootloader on Xiaomi smartphones is a software barrier that limits the user's ability to modify the system. On the Redmi 7A, it is locked by default, which protects the device from accidental damage, but also deprives the owner of flexibility. Unlocking opens access to custom firmware installation, obtaining root rights, and also allows you to restore the "brick" after unsuccessful updates.
Unlocking through Fastboot is the only officially supported method by Xiaomi, but even this requires preparation, from linking a Mi Account to installing special drivers. In this article, we will look at all the steps, from checking the status of the bootloader to solving typical errors such as "Couldn't unlock" or "Device not connected". 7A with its unique hardware platform.
โ ๏ธ Important: Unlocking will reset the device to factory settings. Backup data via Settings โ Additionally. โ Backup or by using Mi PC Also note that the procedure can take up to 72 hours due to Xiaomiโs restrictions on the frequency of unlocks for new accounts.
Preparation for Unblocking: Requirements and Warnings
Before starting the procedure, make sure that all the mandatory conditions are met:
- ๐ฑ Device: Xiaomi Redmi 7A (codename pine, with a battery charge of at least 60%, supported by all firmware versions, including MIUI Global, China and EEA.
- ๐ป Computer: Windows 7/10/11 (64-bit recommended Linux/macOS fixed ADB Windows will require Mi drivers. USB Driver.
- ๐ Mi Account: Device-related (in Settings) โ Mi Account and confirmed phone number: account must be created at least 30 days ago โ this is a requirement of Xiaomi to fight fraud.
- ๐ Internet: Stable connection on PC and smartphone (Wi-Fi or mobile data). VPN Proxies can block Xiaomi servers.
Download the official Mi Unlock Tool from the site en.miui.com/unlock (version 5.5.224.24). Avoid third-party sources - they can distribute modified versions with malicious code. USB-cable (preferably original) and disable the antivirus โ it can block Mi Unlock.
โ ๏ธ Attention: If your Redmi is 7A was purchased in China (the domestic version), you may need a Chinese phone number in your Mi Account to unlock it.
| Component | Minimum version | Where to download |
|---|---|---|
| Mi Unlock Tool | 5.5.224.24 | Official website |
| ADB & Fastboot | 1.4.3 (Platform Tools) | Android Developers |
| Mi USB Driver | 2.0.5.7 | Xiaomi website |
| Firmware for recovery | MIUI 12+ | Xiaomi Firmware Updater |
Check the status of the bootloader on Redmi 7A
Before you start unlocking, make sure the bootloader is actually locked.
- Turn off Redmi 7A.
- Press the buttons Loud down + Power for 10 seconds until the Fastboot logo appears.
- Connect the device to your PC and open the command line in the folder with ADB.
- Enter the command: fastboot oem device-info
In the answer, find the lines:
- Device unlocked: false โ the bootloader is locked.
- Device unlocked: true - already unlocked (no further action required).
If the command returns the waiting for device error, check the drivers or try another one. USB-The port. 7A Sometimes it helps to reconnect the cable with the held button Volume down.
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If the device is not defined in Fastboot, try disabling the driver signature in Windows: press Win + X โ Command Prompt (administrator) and bcdedit /set testsigning on, then restart the PC.
Step-by-step: unlock through Mi Unlock Tool
Follow the algorithm in strict order. Any deviation can result in a 72-hour suspension of your Mi Account.
Install Mi Unlock Tool and Drivers|Linking your Mi Account to your device|Enable debugging on USB and OEM-unlock|Charge the phone to 60%+
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- Activate Developer Mode: Go to Settings โ About the phone and 7 times click on the version MIUI. Back to Settings โ Additionally. โ For developers and include: ๐ง Debugging by USB ๐ Unlocking OEM (If there is no option, update the firmware to MIUI 12+)
Account binding:
In the same Developer Menu, find Mi Unlock Status and click Add Account and Device. SMS-code and confirm the binding.
Launch of Mi Unlock Tool:
Open the utility on behalf of the administrator. Sign in to the same Mi Account as your phone. Connect Redmi 7A Fastboot (Loudness buttons down) + Nutrition).
Start of unlocking:
In Mi Unlock Tool, click Unlock. Confirm the agreement and wait for the device to be checked. If Added successfully appears. Wait 168 hours is a new account, and you have to wait 7 days. Otherwise, the process will begin immediately.
Completion:
Once successfully unlocked (unlocked successfully), the phone will reboot. The first turn on can take up to 10 minutes - that's normal.
โ ๏ธ Warning: If the Mi Unlock Tool shows a Couldn't unlock 99% error, don't turn the device off! Close the program, reconnect the phone and try again. USB-port to the back panel of the system unit.
What if the Mi Unlock Tool canโt see the device?
Solving common errors when unlocking
Even with the correct instructions, Redmi 7A users often encounter errors, and here are the most common ones and ways to fix them:
| Mistake. | Reason. | Decision |
|---|---|---|
| Couldnโt unlock 99% | Failure of communication with the Xiaomi server or blocking antivirus | Turn off the antivirus, change it. USB-Port, try again in 30 minutes. |
| Device not connected | Problems with drivers or cable | Install drivers manually, try another cable |
| Added successfully. Wait 168 hours | New Mi Account (less than 30 days) | Wait 7 days or use an account over 30 days |
| Current account is different from the account info on the device | Accounts on PC and phone do not match | Sign out on both devices and log in again under the same account. |
If the Redmi 7A is stuck on the MIUI logo after unlocking, reset via Fastboot:
fastboot erase userdata
fastboot rebootTo restore the workflow, you may need to download the official firmware for pine (codename Redmi 7A) from the Xiaomi Firmware Updater site and follow the instructions for firmware in clean all mode.
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If unlocking ends in a 50% or 99% error, 90% of the time it is the antivirus or Windows firewall that is to blame. Add the Mi Unlock Tool to exceptions or temporarily disable protection.
Alternative Unlocking Methods (Unofficial)
If the official method does not work (for example, because of the blocking of an account), informal methods can be used.
- ๐ง EDL-Emergency Download Mode: Allows you to flash your device in emergency mode without unlocking the bootloader. Requires an authorized Xiaomi account (sold on forums) and Qualcomm boxing (for example, UFED It's a good fit for bricks".
- ๐ Exploits for older versions MIUI: On the firmware MIUI 10 And below there were vulnerabilities that allow you to unlock the bootloader through ADB. For Redmi. 7A The actual exploits are dirtycow or CVE-2019-10538, But they require root access, which is hard to get on a locked device.
- ๐ฑ Unblocking services: Some workshops offer unlocking for a fee (from 500 rubles). The risk of fraud is high - check reviews. Legal services (for example, Xiaomi Authorized Service Centers) will refuse to perform the procedure due to company policy.
โ ๏ธ Note: Using informal methods may result in loss of warranty, blocking IMEI Or "brick." On the Redmi. 7A With Qualcomm Snapdragon 439 processor, it is particularly risky to use tools like Fastboot Enhance โ they can damage the partition. modemst1, Which will cause the network to be lost.
If you're willing to EDL-download the branded Mi Flash Tool and firmware for pine in.tgz format:
- Unpack the firmware in a folder without Cyrillic.
- Start the Mi Flash Tool, select the folder with the firmware.
- Connect the Redmi 7A turned off to the PC, holding Volume Up + Volume Down (EDL mode).
- In the tool, press Refresh, then Flash. Choose clean all.
What to do after successful unblocking?
The unlocked bootloader opens up new possibilities, but it requires caution. Here's what we can do next:
- ๐ Installation of custom recaveri: Squeeze TWRP OrangeFox is a fastboot flash recovery twrp.img. For Redmi. 7A current-age TWRP 3.7.0 from the developer wrztxy (see on the XDA Developers).
- ๐ฆ Firmware custom software: Popular firmware for Redmi 7A: LineageOS 18.1 (Android 11) Pixel Experience (Pure Android) Havoc-OS (Tuneable shell)
- ๐ Getting root rights: Install Magisk through custom Recovery. download the latest version of Magisk ZIP from GitHub and flash it into TWRP.
- ๐ง System modification: With Magisk, you can install modules to change the interface, improve performance or block ads (for example, AdAway).
โ ๏ธ Warning: After installing custom software may stop working:
- ๐ถ LTE/VoLTE (It is solved by the firmware of the correct modem)
- ๐ Fast charging (check the kernel in firmware)
- ๐ฎ Google Pay (due to SafetyNet trigger)
To restore the original firmware, download Fastboot ROM for Redmi 7A from the official website and run it through the Mi Flash Tool in clean all and lock mode. This will return the device to factory state and lock the bootloader back.