Smartphone iPhone 5s remains a legendary device, despite its venerable age by industry standards. Many users still use this device as a primary or backup device, and it is crucial for them to keep the software up to date. The latest available operating system version for this model is iOS 12.5.7, which contains important security patches and stability fixes.
The easiest way to upgrade the firmware is to use the built-in mechanism OTA (Over the Air), which allows you to perform all actions directly on your device. You don't need a cable, a computer with iTunes, or complex recovery mode manipulations. However, the process requires certain conditions, such as a stable wireless connection and sufficient battery charge, to avoid critical errors.
In this guide, we'll walk you through each step of the process in detail, address potential errors, and provide recommendations for optimizing storage space. Properly preparing your device before downloading update files is key to ensuring the process completes successfully, without losing personal data or functionality.
Checking compatibility and current software version
Before you begin any active steps, you need to make sure that your device is actually ready for the procedure. Apple iPhone 5s has limitations in supporting new features, so it's important to understand which version you can upgrade to. Checking your current system build only takes a few seconds but provides a complete understanding of the situation.
Open the settings menu and go to the section Main, then select the item About this device. The line is displayed here. Software version, where the current numbers are listed. For the 5s, the maximum available value is 12.5.7, which is the final release for the Apple A7 chip.
⚠️ Note: If you already have iOS 12.5.7 installed, the system will report that there are no updates available. Attempting to install newer versions (iOS 13 and above) on this device is technically impossible and may result in instability when using third-party methods.
It's also worth paying attention to the amount of available memory. Update files are quite large, and unpacking and installing them requires sufficient space. If space is critically low, the process may be interrupted during the preparation phase.
Preparing your device for updating via Wi-Fi
Proper preparation minimizes the risk of errors during downloading and installing new files. Priority should be given to energy conservation and a good network connection, as a power or network interruption could damage the system partition.
Connect your smartphone to a power source. Even if the battery shows 80-90%, it's best to use the original cable and power adapter to prevent the device from running out of power at a critical moment. This process can take anywhere from 30 minutes to several hours, depending on your internet speed.
Make sure you are connected to a reliable network Wi-FiUsing 3G/4G/LTE mobile networks to download system files is not recommended due to the large amount of traffic and potential signal instability. Furthermore, cellular network settings often prohibit downloading large files over mobile data.
☑️ Checklist before updating
It is recommended to back up your data before making any system changes. This can be done via iCloud Or locally, if you have access to a computer, although for the purposes of this guide, we'll focus on the PC-free method. Keeping your contacts, photos, and messages safe is our number one priority.
Step-by-step instructions: Over-the-Air (OTA) update
The update process itself is intuitive and fully automated by the developers. You don't need programming skills; simply follow the on-screen prompts. The settings interface in iOS 12 remains logical and structured.
Go to the menu Settings, select a section Main and click on the item Software updateThe system will contact Apple servers, check for the availability of a new firmware version for your device identifier, and offer to download it.
Click the button Download and installA window will appear with the license agreement terms, which you must accept. After this, the data package will begin downloading. The speed of the download depends directly on the quality of your Wi-Fi signal.
- 📥 The system will download the required update package in the background.
- ⚙️ After downloading, the "Preparing update" stage will begin, which may take a long time.
- 🔄 Your device will prompt you to reboot for installation. Accept this or select "Postpone" if you need to use the phone immediately.
During the installation process, the smartphone's screen will turn off and the Apple logo with a progress bar will appear. At this point, do not interrupt the power supply or attempt to manually restart the device. Wait until the process is complete and the welcome screen or desktop appears.
What to do if the update is stuck?
If the progress bar hasn't moved for more than 2 hours, try performing a forced reboot by holding down the Home and Power buttons simultaneously. However, only do this as a last resort, as there's a risk of data loss.
Common errors and how to fix them
Despite the simplicity of the procedure, users often encounter technical difficulties. Understanding the causes of errors helps quickly find solutions and avoid panic. Most often, problems are related to network settings or full storage.
One of the most common issues is the message "Unable to check for updates." This often indicates a network settings issue or DNS problems. In such cases, resetting network settings can help. This doesn't delete your personal data but returns Wi-Fi and cellular settings to factory defaults.
| Error | Probable cause | Solution method |
|---|---|---|
| Not enough space | Low free memory | Delete photos, videos, or apps |
| Unable to verify | Network or DNS failure | Reset network settings |
| Installation error | Power interruption | Connect to charger and repeat |
| Incorrect password | Activation Lock | Enter the correct Apple ID |
If the system reports that there isn't enough space, but you don't want to delete important files, you can try an alternative. Sometimes deleting an already downloaded but not installed update file helps. To do this, go to Settings → Main → iPhone storage, find the iOS update file in the list and delete it, then try to start the process again.
⚠️ Note: The menu interface and item layout may differ slightly depending on the specific iOS 12 version currently installed on your device.
Freeing up space for system files
To successfully install the update iPhone 5s Free space is required, often exceeding the size of the boot file itself. This is because the system needs space for temporary files, unpacking archives, and creating backups before making changes.
Start by analyzing the storage in the section Settings → Main → iPhone storageHere you'll see a color chart and a list of apps sorted by space usage. Messenger apps like WhatsApp or Telegram, which store media file caches, often take up the most space.
Deleting apps is the fastest way to free up space. Don't be afraid to delete built-in apps like Stocks, Maps, or the iTunes Store if you don't use them. You can always redownload them from the App Store for free after updating your system.
- 🗑️ Delete heavy games you haven't used for a long time.
- 🎬 Transfer videos and photos to your computer or cloud storage.
- 🧹 Clear your Safari cache in your browser settings.
It's also worth checking the "Recently Deleted" folder in the Photos app. Files deleted by the user are stored there for another 30 days and continue to take up space. Clearing this folder will instantly free up gigabytes of space needed for the installer.
What to do if Wi-Fi doesn't detect the update
Sometimes Apple servers are available and the internet is working, but the smartphone stubbornly refuses to see any available updates. This could be due to caching of old software version data or temporary routing issues.
First, try simply rebooting your router and smartphone. This simple action often resolves network socket issues. If that doesn't help, change the DNS servers in your Wi-Fi settings. Try entering Google's addresses (8.8.8.8) or CloudFlare (1.1.1.1), which often helps to bypass local blockages or provider errors.
In rare cases, the issue may be with the date and time. If the time on your device is incorrect, security certificates will fail verification and the connection to the update server will be lost. Make sure that in the Main → Date and time The "Automatic" box is checked.
Frequently Asked Questions (FAQ)
Can I update my iPhone 5s to iOS 13 or 14?
No, the Apple A7 processor's technical architecture and RAM capacity do not support system versions newer than iOS 12.5.7. Any apps that promise this are fraudulent.
Will my data be erased when updating via Wi-Fi?
During a routine update via the settings menu, all data, contacts, and apps are preserved. However, creating a backup before starting the update is a mandatory rule of digital hygiene.
How long does it take to update iPhone 5s?
The time depends on your internet speed and the amount of data on your phone. On average, the process takes between 40 minutes and 1.5 hours. Don't interrupt the process, even if it seems slow.
Why does my phone get hot during an update?
The processor's active operation while unsteaming and installing system files causes increased heat generation. This is normal, but it's best to remove the case and place the phone on a hard surface for better heat dissipation.