The transition to a more recent version of the operating system is not just a change of numbers in the settings, but a significant improvement in the security and performance of your gadget. Android 8.0 Oreo brought many important changes, including the Picture-in-Picture function, smart battery management and faster launch of applications. However, for device owners stuck on Nougat, the migration process may seem complicated and confusing.
Before taking active steps, you need to realize that the success of the operation directly depends on the model of your smartphone and the manufacturer's policies. Some brands, such as Nokia or Motorola, provided quick updates, while others may have stopped supporting older models altogether. Your task is not just to press the “Update” button, but to properly prepare the device to avoid data loss or turning the device into a “brick.”
In this article we will analyze in detail all the available methods of switching from Android 7.0 to Android 8.0, starting from standard methods and ending with manual installation via a computer. We will look at the nuances of preparation, possible errors and ways to solve them. It is critically important to understand that the official update is only available for devices whose processor and memory are officially certified by the manufacturer for the new software version.
Checking compatibility and preparing the device
The first step should always be a thorough diagnosis of the current state of the gadget. You shouldn’t blindly believe advertising promises or forums that claim that “everything will work.” You need to know exactly the processor model and the amount of RAM, since Android 8.0 it places higher resource demands than previous versions. If the device was originally released with minimal specifications, the new system may be unstable.
Be sure to check the availability of free space in the internal storage. The update process not only requires space to download the installation package, but also an additional buffer for unpacking files and temporary operations. It is recommended to have 3-4 GB free, even if the archive itself weighs less. Clear the cache, delete unnecessary videos and applications that you do not use.
Battery charge is another critical parameter, ignoring which can lead to fatal consequences. During the flashing process, the device may consume energy intermittently, and if the battery dies while system files are being written, it will be extremely difficult to restore the phone. Connect the gadget to a charger or make sure that the charge level is at least 60-70% before starting the procedure.
⚠️ Attention: If your device was purchased in China without global firmware (Global ROM), the automatic update may never arrive or may result in Google services not working. In such cases, a complete flashing via a computer is required, selecting the correct region.
Do not forget to make a complete backup copy of all important data. Even if you plan to simply update over the air, the risk of losing contacts, photos and correspondence always exists. Use cloud services or copy files to your computer. After the update, the folder structure may change, and it will be more difficult to find your data.
Official update method OTA (Over-The-Air)
The easiest and safest way to get a new version of the OS is to use the built-in update mechanism. The manufacturer tests the assembly for a specific model in advance and sends it out to users in stages. If you receive a notification, consider yourself lucky: this means that OTA update is already available for your region and specific device modification.
To start the process, go to the settings menu and find the section responsible for the system. The path may differ depending on the manufacturer's shell, but the logic remains the same. Typically you need to click the check for new versions button. If the server has responded, the package will begin downloading.
- 📱 Go to
Settings → About phone → System update(or a similar path in your model). - 📶 Make sure the device is connected to a stable network Wi-Fiso as not to waste mobile traffic.
- ⬇️ Click “Download” and wait for the process to complete without turning off the device screen.
- 🔄 After downloading, click “Install now” or “Reboot”, the phone will perform all the necessary operations.
It is important to understand that the installation process can take from 10 to 40 minutes. The screen may flash on and off, and the Android logo may appear with a progress bar. At this moment, you should absolutely not interrupt the power supply or try to reboot the phone manually. The system makes changes to the system partition, and any intervention will violate the integrity of the files.
If the update has been downloaded but is not installed, try clearing the Google Play Services and Download Manager application cache before trying again.
Manually installing the firmware via a computer
When the OTA update does not arrive months or gives an error during installation, the manual installation method comes to the rescue. This method requires a computer, a USB cable and precise knowledge of the model of your device. You'll need to find and download an official firmware image (often in ZIP format) specifically for your model from the manufacturer's website or trusted resources.
The process looks more complicated than OTA, but gives more control. Manufacturers often provide special PC utilities that take care of the main work. For example, Samsung uses Odin or Smart Switch, Sony — Flash Tool, and Xiaomi — Mi Flash. Using third-party software without understanding the risks can lead to damage.
The algorithm of actions usually includes putting the phone into a special boot mode. This could be Download Mode, Fastboot or Recovery. The key combinations for entering these modes are different for everyone: most often it is holding down the volume down button and the power button when the device is turned off.
adb reboot bootloaderThis command, entered in the computer command line with the phone connected (with ADBinstalled), will put the device into bootloader mode. Next, a new system image is recorded through the computer. Make sure that the drivers for your device are installed correctly in the Windows or macOS operating system.
☑️ Checklist before manual firmware
Using Recovery mode for updating
If you already have a firmware file in ZIP format, but do not have the ability or desire to use the computer, you can use the built-in recovery mode - Recovery Mode. This method allows you to install the update locally, from the memory of the smartphone itself. However, on stock firmware this function is often hidden or limited.
To get to the Recovery menu, you need to turn off the phone and hold down a certain key combination (for example, Volume Up + Power). In the menu that opens, navigation is carried out using the volume buttons, and selection is made using the power button. You need to find the item “Apply update from storage” or “Install from SD card”.
After selecting the update file, the verification (signature) process will begin. If the file has been modified or is not intended for this model, the installation will fail. This is a security mechanism that prevents the installation of corrupted files. If everything goes well, select “Wipe cache partition” after installation to clear the temporary files of the old system.
⚠️ Attention: On many modern devices with a locked bootloader, installing firmware via Recovery is impossible without first unlocking it, which erases all data from the device.
Do not confuse this mode with a full reset (Wipe Data/Factory Reset). The latter will delete all your personal files, settings and apps, returning the phone to its out-of-the-box state. Use the reset only as a last resort if the system does not work correctly after the update.
Comparison of Android update methods
The choice of update method depends on your technical skills and the current situation with the device. Each method has its own advantages and disadvantages that must be weighed. Automatic updating is convenient for the average user, while manual updating gives control over the situation.
The table below shows a comparison of the main characteristics of different updating approaches from Android 7.0 to Android 8.0.
| Characteristics | OTA (Over the Air) | Via PC (Official software) | Via Recovery (Local) |
|---|---|---|---|
| Difficulty | Low | Medium | High |
| Risk of data loss | Minimal | Medium | High |
| PC requirements | Not needed | Required | Not needed (file required) |
| Process speed | Depends on the Internet | High (via USB) | Medium |
Please note that manual methods often allow you to “jump” over intermediate versions, which are required for OTA updates. This saves time, but requires more caution. If you are not confident in your abilities, it is better to wait for the official notification or contact the service center.
What to do if applications are missing after the update?
Some old applications may be incompatible with Android 8.0. Check Google Play Market for updates for them. If there are no updates, the developer may have stopped supporting the software for new versions of the OS.
Typical errors and ways to solve them
Even if you follow all the instructions, unforeseen situations may arise. One of the common problems is the message “Failed to check for updates” or an endless bootloop. In the first case, clearing the update service cache or changing the DNS server in the Wi-Fi settings often helps.
If the phone is stuck on the logo after installation Android 8.0, try resetting the cache via Recovery. If this doesn't help, you may have to do a Factory Reset, which will require restoring your data from a backup. Driver errors when connecting to a PC can be resolved by reinstalling USB drivers or changing the cable.
Another common problem is rapid battery drain and heating in the first days after the update. This is normal: the system is indexing files and optimizing applications in the background. Usually after 2-3 days everything stabilizes. If the problem persists longer, check which applications are consuming the most energy.
⚠️ Attention: Settings interfaces and menu item names may differ depending on the shell version (MIUI, EMUI, OneUI, etc.). Always check the official documentation for your specific device model.
The most common reason for a failed update is an unstable Internet connection or user interruption of the process. Let the system complete its work.
Questions and answers (FAQ)
Is it possible to update Android 7.0 to 8.0 if the phone is old?
It depends on the manufacturer. If official support for a model has been discontinued, you will not be able to update using standard methods. There are unofficial firmwares (Custom ROM), but their installation requires unlocking the bootloader and carries high risks.
Will my data be erased when updating to Android 8.0?
When updating via OTA or official software, the data is usually saved. However, there is always a risk of failure, so creating a backup copy before starting any work is a mandatory rule.
Why is the update not arriving on my phone?
There may be several reasons: the manufacturer has not yet released an update for your model or region, device support has ended, or the phone is a “gray” imported version with incompatible firmware.
Is it safe to install Android 8.0 manually?
It is safe only if you use official images from the manufacturer’s website. Installing firmware from unverified sources can lead to infection of the device with viruses or its complete breakdown.
Is it possible to return to Android 7.0 after updating?
Technically, this is possible through the Downgrade procedure, but it is complex, often requires unlocking the bootloader and is guaranteed to delete all data. In addition, some manufacturers block the ability to roll back to older versions for security reasons.