How to safely uninstall Android on Honor 7A: From unlocking to custom firmware

Users often wonder how to completely replace the operating system on their device in order to gain maximum control over the hardware. Smartphone owners Honor 7A are no exception, wanting to get rid of pre-installed software EMUI and manufacturer restrictions. The process of completely replacing the OS, often popularly called “Android demolition,” involves obtaining superuser rights and installing alternative firmware. This opens the door to installing pure Android, Linux distributions or specialized assemblies.

However, it is worth understanding that this procedure is irreversible without backup copies and requires deep technical knowledge. Standard configuration tools do not allow you to remove the system kernel, so you will have to interact with low-level memory sections. Before taking radical action, it is necessary to assess the risks of losing the warranty and possibly turning the device into a “brick.” In this guide, we will analyze in detail each stage of preparing and implementing plans for flashing your Honor 7A.

Device preparation and risk assessment

The first step before any manipulations with the system partition is to create a full backup copy of the data. Removing your current operating system will inevitably lead to the loss of all photos, contacts and installed applications. It is recommended to use cloud services or transfer files to a computer via a USB cable. Pay special attention to saving encryption keys and account passwords, since after a reset they may be required for activation.

The second critical point is battery charge. The flashing process can take considerable time, and suddenly turning off the device while data is being written to the flash drive can lead to irreversible damage to the bootloader. Make sure the charge level is at least 70-80%. Also check the integrity of the USB cable and port, as an unstable connection will interrupt the transfer of firmware files.

⚠️ Attention: You perform all actions to modify the software at your own peril and risk. The author of the article is not responsible for possible device failure, loss of data, or violation of the manufacturer's warranty.

The third aspect is the search for compatible software. For the model Honor 7A (code name ARE-L22 or DUA-L22) there are specific versions of drivers and utilities. The use of firmware from other models, such as Honor 7C or Honor 8Xis strictly prohibited, as this will lead to a hardware conflict. Download files only from trusted developer forums, such as 4PDA or XDA Developers.

Unlocking the bootloader: The first barrier

Smartphone manufacturers, including the brand Honor, block the bootloader (Bootloader) to protect the integrity of the system. Without unlocking this component, it is impossible to install third-party Recovery or custom firmware. Previously, the company provided unlock codes officially, but now this service is closed. Users have to resort to third-party methods or paid services to obtain a unique code.

The unlocking process usually begins by enabling USB debugging mode. To do this, go to the menu Settings → About phone and quickly click on the build number until a notification appears indicating that you have become a developer. Then in the new “For Developers” menu, activate the “USB Debugging” item. This will allow the computer to send commands to the device through the interface ADB.

After connecting the smartphone to the PC and installing the drivers Huawei USB Drivers, you need to enter a command in the terminal to put the device into fastboot mode. The command looks like this:

adb reboot bootloader

In fastboot mode, the device waits for the unlock command to be entered. If you have code from the manufacturer, the command will look like this:

fastboot oem unlock YOUR_UNLOCK_CODE

If there is no official code, utilities like HCU Client or DC-Phoenixare used, which select the code through servers. After successfully executing the command, a warning about erasing data will appear on the screen. Confirm the action with the volume buttons. The device screen will blink and the bootloader will be unlocked.

Installing custom Recovery (TWRP)

Standard recovery menu (Recovery) in smartphones Honor has limited functionality and does not allow you to install zip archives that are not signed by the manufacturer. To fully manage memory partitions, you need to install a modified environment, the most popular of which is TWRP (Team Win Recovery Project). This is a graphical interface that supports touch control and work with the file system.

The image file twrp.img must be strictly adapted to the specific model of your processor and screen. For Honor 7A processor-based assemblies are often used Snapdragon 450. The downloaded image is placed in the tools folder platform-tools on the computer. The device is again switched to fastboot mode with the command adb reboot bootloader.

Recovery firmware is performed with one command, which writes the image to a special section:

fastboot flash recovery twrp.img

An important nuance: after executing this command, you cannot immediately reboot the system in the usual way, otherwise the stock Recovery will overwrite the installed TWRP. You must immediately boot into recovery mode by holding down the power and volume up buttons. If you see the TWRP menu with touch controls and the ability to select a language, the operation was successful.

⚠️ Attention: Menu interfaces and button locations may differ in different versions of TWRP. Carefully read the description of a specific assembly before installation so as not to confuse the Data and System sections.

What to do if TWRP does not start?

If after flashing the firmware the device goes into a cyclic reboot or shows a black screen, try flashing the stock Recovery image. To do this, download the official firmware, extract the recovery.img file and run the fastboot flash recovery recovery.img command. This will return the phone to the factory state of the recovery menu.

Full cleaning and formatting of partitions

Now that you have access to the advanced menu, you can begin to directly “demolish” the old system. In Android terminology, this is called Wipe or data clearing. Simply deleting files is not enough; it is necessary to format the partitions so that the new system can correctly initialize the file system.

In the TWRP menu, go to the “Cleaning” section (Wipe). Select Advanced Wipe mode. Here you will be offered sections: Dalvik / ART Cache, Cache, System, Data and Internal Storage. To completely replace the OS, you need to check the boxes System, Data and Dalvik. The Internal Storage section can be left untouched if you store the firmware installation files there, but for maximum purity of the experiment, it can also be formatted.

After selecting the partitions, move the slider to confirm the action. The formatting process will take a few seconds or minutes depending on the amount of memory. In the operation logs you will see messages about successful format. At this stage, the old Android and shell EMUI are completely destroyed, and the phone is a “blank slate”.

Memory section	Purpose	Demolition action
System	Stores operating system files	Must be formatted
Data	User data and applications	Must be formatted
Cache	Temporary system files	Recommended clear
Boot	The system kernel and ramdisk	Overwritten with new firmware

Some users mistakenly believe that formatting a partition Boot needs to be done manually. In fact, this partition is overwritten automatically when a new system image is installed. Manual intervention in this section without having a ready-made kernel file can lead to the phone stopping booting altogether.

Installing custom firmware or GSI

After cleaning the device, the time comes to install a new operating system. For Honor 7A the choice may be limited by the availability of official ports from the developer community. Firmware based on LineageOS, Pixel Experience or Resurrection Remixare often used. If there is no ready-made assembly for your model, you can try installing a universal image GSI (Generic System Image), since the device supports Project Treble.

The installation process via TWRP is as follows: the downloaded zip archive with the firmware is copied to the phone’s internal memory or SD card. In the Recovery menu, select “Install”, find the archive file and confirm the installation by swiping. The system will begin unpacking and writing files to the previously cleaned partition System.

If you are using a GSI image, the procedure is slightly different. First you need to download the image in the .img.xzformat. In TWRP, select "Install", then click the "Install Image" button at the bottom of the screen. Select the image file and specify the partition to burn - usually this is System Image. After recording is complete, be sure to clear the Dalvik and Cache caches to avoid conflicts between old files and the new system.

⚠️ Attention: When installing GSI images, the functionality of some hardware modules (camera, fingerprint sensor, VoLTE) may not work correctly or not work at all. This is a payment for the universality of the image.

In addition to the system, a package of services GApps (Google Apps) is often installed, if they are not built into the firmware. This is done in a similar way immediately after installing the main system, before the first reboot. Without this step, you will receive a system without Play Market and Google services, which will make the smartphone unsuitable for everyday use.

Obtaining root access and final setup

Many users strive to “demolish” Android in order to obtain superuser rights (Root). After installing custom firmware, the easiest way to do this is through the same TWRP. You need to download the archive with the utility Magiskwhich is a modern standard for obtaining root access with the ability to hide rights from banking applications.

Flash the archive Magisk.zip through the installation menu in Recovery. After rebooting, the Magisk Manager application will appear on the system, which will confirm your rights. Now you can remove system applications, change the processor frequency and install modules that change the behavior of the kernel. However, remember that having root access reduces the security of the device.

The final stage is the initial setup of the new system. The process may take longer than usual as the system optimizes applications when first launched. If your phone is stuck on the logo for more than 10 minutes, there may be a version conflict. In this case, you will need to re-enter Recovery and clear the Data partition, followed by reinstalling the firmware.

Frequently asked questions (FAQ)

Is it possible to return the factory Honor firmware after demolishing Android?

Yes, it is possible. You will need to download the official firmware image for your specific model from the manufacturer’s website or specialized resources. Unpack the archive, find the files system.img, boot.img, recovery.img and flash them through fastboot mode using the appropriate commands. You can also use the utility eRecoveryby holding down the power and volume up buttons when the phone is turned off and connecting it to Wi-Fi.

What is a “brick” and how to save the Honor 7A if it has turned into one?

“Brick” is the state of the device when it does not turn on, does not responds to buttons and is not detected by the computer in normal mode. If the phone is detected in the mode COM (COM port in the device manager), it can be revived using the utility SP Flash Tool and the Scatter file from the stock firmware. If the device shows no signs of life at all, you may need a programmer or contact a service center to resolder the memory chip.

Will the banking application work after installing custom firmware?

By default, banking applications detect the presence of an unlocked bootloader or root access and refuse to work. To bypass this limitation, you need to use the “Magisk Hide” function in the Magisk Manager settings, hiding root access from specific applications. You may also need to re-lock the bootloader, but this is only possible on stock firmware.

Will the IMEI be erased when the system is demolished?

If the instructions are followed correctly and only the System and Data partitions are formatted, the IMEI will be saved, since it is stored in a protected partition EFS or NVRAMto which the user does not have direct access. However, if you accidentally format the modem's base data partition or flash an incompatible modem image, the IMEI may be lost (become null). Restoring IMEI is a complex procedure that requires a backup copy of this partition made before starting the experiments.