It's quite common to need to urgently update your smartphone's software but have no wireless network access. This can happen while traveling, at your vacation home, or in the office where your corporate Wi-Fi router blocked access to Apple servers. Many users mistakenly believe that the procedure is impossible without an internet connection, but this is not true. There is a time-tested method that allows you to use a wired connection to transfer data.
To complete this task, you'll need a computer (laptop or desktop) with internet access and an original or certified Lightning to USB-C cable. The process takes a little longer than a standard OTA update, but it guarantees stability and the absence of errors when downloading large firmware files. It's important to understand that iOS - is a complex system that requires data integrity during installation.
In this article, we'll cover all the steps involved in preparing and performing a USB update. You'll learn how to properly prepare your device, which operating system version to use, and what to do if critical errors occur. Interrupting the iOS update process via cable may render your device completely inoperable, so please follow the instructions carefully. We'll also cover the nuances of working with different versions of macOS and Windows.
Preparation of equipment and software
Before you begin, make sure your computer meets the minimum technical requirements. Windows users should install the latest version of iTunes from the Microsoft Store or the official Apple website. Mac users should ensure their operating system meets the minimum technical requirements. macOS Updated as older versions may not support the latest iPhone communication protocols.
Pay special attention to the cable. Cheap Chinese-made alternatives are often designed only for charging and lack the necessary contacts for data transfer. Using such a cable will result in the computer simply not detecting the phone. It is recommended to use the original cable included in the package or certified accessories with markings. MFi (Made for iPhone).
It's also critical to check the free space on your computer's hard drive. Firmware files for modern models, such as the iPhone 14 or 15, can take up between 3 and 6 GB of space. If the drive is full, the download will be interrupted mid-stream. It's recommended to free up at least 10 GB to ensure the software runs smoothly.
Be sure to back up your data before making any changes to the system software. Although updating usually goes smoothly, there's always a risk of losing contacts and photos. This can be done via iCloud or locally on your computer using the iTunes/Finder interface.
Instructions for Windows and macOS users prior to 10.14
For owners of computers running Windows or older versions of macOS (Mojave and later), iTunes remains the primary tool. It's a versatile application that manages your media library, syncing, and, crucially in our case, firmware updates. The process begins with connecting the device to the PC.
After connecting the cable, click the device icon that appears in the upper left corner of the iTunes interface. If you see the message "Trust this computer?", be sure to click "Trust" on your smartphone's screen and enter the digital passcode. Without this step, the computer will not be able to access the phone's system partitions.
In the device overview window, find the "Summary" section. This displays basic information about the device's model, capacity, and current iOS version. This section contains the "Update" button. Don't confuse it with the "Restore" button, which completely erases data. Clicking "Update" will check for a new software version.
☑️ Check before updating in iTunes
If iTunes prompts you to create a backup first, accept it. This will take extra time, but it will be your insurance. Once the backup is complete, the program will automatically download the required firmware package from Apple servers and begin the installation. Your phone's screen will turn off, and the Apple logo with a progress bar will appear.
⚠️ Caution: Do not disconnect the cable or turn off the computer during the update process. Losing power while the system files are being written could brick your iPhone, requiring a complex restore in DFU mode.
It's important to note that iTunes may be unstable on some Windows 11 builds. If the program constantly crashes or doesn't recognize your device, try reinstalling the Apple Mobile Device Support drivers through Device Manager. This often resolves the device recognition issue.
Updating via Finder on new versions of macOS
Starting with macOS Catalina (10.15), Apple deprecated iTunes, dividing its functionality across several apps: Music, Podcasts, TV, and Finder. Managing iOS devices was completely integrated into the default Finder file manager. This simplified the process for Mac users, making it more native and faster.
Connect your iPhone to your Mac using a cable. Open Finder and find your device in the left sidebar, under "Locations." When you first connect, you'll need to trust both devices, just like with iTunes. After authorization, you'll see several tabs: General, Music, Movies, and more.
The "General" tab contains all the necessary information and management tools. Here you'll see the current iOS version and the "Update" button. It works similarly to iTunes: it checks the server, downloads the distribution, and installs it. The only differences are in the interface and performance, which is typically faster on a Mac.
Why is Finder more stable than iTunes?
Finder is a system component of macOS, optimized by Apple to work with the file system. iTunes, on the other hand, was a third-party application ported to the Mac, which often resulted in resource conflicts and sync errors.
If the "Refresh" button is grayed out, check your computer's internet connection. Also, make sure your antivirus or firewall isn't blocking Finder's connection to Apple servers. Sometimes, restarting Finder using "Force Applications to Start" (Option + Command + Esc) helps.
For owners of Apple Silicon chips (M1, M2, M3), the process is extremely smooth, as the processor and operating system architecture are completely unified. Intel Mac owners also have no need to worry, but they should monitor their laptop's temperature, as the unpacking and installation process can put a strain on the processor.
Troubleshooting common upgrade errors
Even if all the rules are followed, the technical process can go wrong. Errors during iOS updates are common, and they are often accompanied by codes that frighten users. Understanding the nature of these errors will help you quickly resolve the issue without having to contact a service center.
One of the most common issues is an error related to insufficient space or a disconnected connection. If iTunes reports "unable to update iPhone," try restarting both your computer and your phone. Then try again, closing any unnecessary programs on your PC that may be consuming bandwidth or USB controller resources.
Another common issue is a freeze at the "Waiting for iPhone" stage. This often indicates a problem with the cable or port. Try a different USB port (preferably USB 2.0 if you're having problems with 3.0) and a different cable. It's also worth disconnecting all other USB devices, leaving only the keyboard, mouse, and phone connected.
| Error code | Probable cause | Solution method |
|---|---|---|
| Error 9 | Problem with equipment or cable | Replace the cable, try another PC |
| Error 4013 | Connection to the server was interrupted | Check the internet, disable the antivirus |
| Error 3194 | Blocking Apple servers (hosts) | Check the hosts file, change DNS |
| Error 14 | Unstable USB connection | Use the port on the back of the system unit |
If errors persist, it's possible that conflicting drivers or outdated library versions are installed on your computer. In this case, a complete reinstallation of iTunes (removing all Apple components through the Control Panel) often helps clear software conflicts.
Using Recovery Mode
If a standard update fails or your phone gets stuck on the Apple logo, you'll need to use recovery mode. This is a special diagnostic mode that allows the computer to interact with the device at a low level, bypassing the standard operating system boot process.
To enter this mode, you need to perform a specific sequence of button presses, depending on your iPhone model. For models with Face ID (iPhone X and newer), quickly press and release the volume up button, then the volume down button, then press and hold the side button until the screen turns off, and continue holding it until the cable and computer image appears.
The procedures are slightly different for the iPhone 8, SE (2nd and 3rd generation), and 7/7 Plus. For example, on the iPhone 7, you need to hold down the Volume Down button, while on older models, you need to hold down the Home button. The computer should detect the device as being in recovery mode and offer the options to "Update" or "Restore."
⚠️ Note: Selecting "Restore" in this menu will completely erase all data from your phone and install a clean iOS version. Select "Update" to try to save your information.
In recovery mode, the update may take longer as the system performs a more thorough file check. Your phone's screen will remain black with a cable icon. Don't panic if the process is slow—this is normal for a deep system update.
Alternative methods and third-party utilities
In situations where Apple's official methods don't work, you can resort to third-party software. Several utilities, such as 3uTools, iMazing, or Tenorshare ReiBoot, offer advanced iOS functionality. They can often fix errors that iTunes can't handle.
For example, 3uTools allows you to download specific firmware versions (IPSW files) and flash them to your device. This is useful if iTunes can't download the file due to network issues. You can download the firmware via a browser with a good connection speed, then specify the path to the file in the installation program.
However, using third-party software carries its own risks. Not all utilities are safe, and some may install adware or work incorrectly with newer versions of iOS. Always check the digital signatures of apps and download them only from the developers' official websites.
It's also worth mentioning the ability to share your internet connection from another smartphone. If you have an Android smartphone with an unlimited data plan or a larger data plan, you can share Wi-Fi with your computer and update your iPhone via iTunes, using your mobile data as a gateway. The main thing is that the connection is stable.
Frequently Asked Questions (FAQ)
Is it possible to update iPhone directly via 4G/5G mobile internet?
Starting with iOS 12, Apple allowed over-the-air (OTA) updates via a mobile network if the update file is less than 150-200 MB (usually small security patches). However, full iOS versions, which are several gigabytes in size, still require a Wi-Fi connection or a computer with a cable.
How long does it take to update iPhone via USB?
The time depends on your internet speed (for downloading the file) and the speed of writing to the device. On average, the process takes 15 to 40 minutes. Downloading a 4-5 GB firmware file can take 5 to 20 minutes depending on your plan, and the installation itself typically takes 10-15 minutes.
Will my data be lost when updating via computer?
When you select the standard "Update" procedure, all data, settings, and applications are preserved. Data is only deleted if you specifically select the "Restore" option or if the update process is interrupted at a certain stage, damaging the file system.
What to do if the computer doesn't recognize the iPhone?
Try the following: replace the USB cable with a known-good one; connect the device to a different USB port (preferably USB 2.0); restart your computer and phone; make sure you tapped "Trust" when prompted on your phone screen. Also, check the Device Manager for any unknown devices.
Should I turn off my antivirus when updating?
In some cases, antivirus software or a firewall may block the connection between iTunes/Finder and Apple servers or interrupt data transfer. If you encounter network errors (such as 4013), we recommend temporarily disabling your antivirus software while downloading and installing the firmware.