Modern smartphones require regular operating system updates to ensure security and stability. However, situations often arise when the home router is unavailable, and public Wi-Fi is unstable or requires browser authentication, which blocks the download of system files. Device owners Apple find themselves in a difficult situation, since the standard update mechanism through Settings By default, it searches for a wireless network.
Luckily, the company Apple We've provided several workarounds for these situations. You can use a 4G/5G mobile network if your carrier offers this option, or connect your device to a computer to force the new version to install. iOSThere are also specific DNS settings that can sometimes help bypass ISP restrictions, although this method doesn't always work.
In this article, we'll take a detailed look at all available methods for installing updates without a traditional Wi-Fi connection. We'll cover the nuances of using mobile data, working with desktop programs, and the process specifics for different models, including iPhone 13, iPhone 14 and older versions. It's important to understand the risks of interrupting the process and properly prepare the device.
⚠️ Attention: The menu interface and item names may vary slightly depending on the version of the operating system installed. If you don't find the option you're looking for, check the official help for the most up-to-date information. Apple Support for your specific model.
Using mobile internet for OTA updates
Since version iOS 15, company Apple has introduced a long-awaited feature that allows you to download system updates directly over a cellular network. Previously, this was impossible without a computer or hotspot, which created significant inconvenience for users with limited data or a weak Wi-Fi signal. Now the process is significantly simpler, but requires certain conditions.
To activate this option, your device must have data service enabled and sufficient network coverage for a stable connection. The update file size can range from 2 to 6 gigabytes, so make sure you have a suitable data plan. Otherwise, your carrier may block the download or charge a significant fee.
To start the process, go to the settings menu and select the section Main. Next, click on the item Software updateIf the system detects a new version and your connection meets the requirements, you'll see the option to download the file over a cellular network. If this option isn't available, your current network configuration or carrier restrictions prevent you from completing the action.
- 📶 Make sure the icon 4G or 5G displayed in the status bar next to the battery charge indicator.
- 💾 Check your available space: unpacking the archive requires more space than the size of the update file itself.
- 🔋 Connect the charger, as the process requires a lot of power and will not start if the battery is low.
It's worth noting that download speeds over a mobile network may be slower than over fiber optic internet. This is due to traffic prioritization and the congestion of cell towers in your area. If your download is stuck at the "Time Estimate" stage, try switching your device to airplane mode for 10 seconds and then back to refresh the network connection.
Updating via a computer using iTunes and Finder
The most reliable and time-tested method for installing a new firmware version remains using a personal computer. This method is ideal if mobile internet is unstable and Wi-Fi is completely unavailable. You will need a cable to do this. Lightning or USB-C (depending on the model iPhone) and installed software.
On computers running Windows or older versions macOS (before Catalina) you need to use the program iTunesMake sure you have the latest version of the app installed, available from the official website or store. Microsoft StoreOn modern Macs, updates are performed through the system Finder, where the device is displayed as an external storage device.
Connect your smartphone to your PC and wait for the device to be detected. If this is the first time you've connected these devices, a prompt will appear on your phone's screen asking "Trust this computer?". Click Trust and enter your screen unlock password. Without this step, the computer will not be able to access the phone's system partitions.
☑️ Preparing for the update via PC
Once connected, select your device in the program's sidebar. In the "Overview" or "Summary" section, click the button Check for updatesThe program will automatically download the required package from the servers. Apple will use your computer's wired internet connection and transmit it to your phone. This method is much more stable than wireless options.
Create a Wi-Fi hotspot from another device
If you don't have access to a fixed router, but have a second smartphone with unlimited data or a tablet with a SIM card, you can set up your own network. This method allows you to use one device's mobile data to update another, bypassing restrictions on direct downloads over the cellular network on some plans or iOS versions.
Enable tethering on the donor device. In Settings iPhone this is done through the item Cellular communications → Modem modeSet a strong password to prevent unauthorized access to your data. On the device being updated, find the newly created network in the list of available Wi-Fi networks and connect to it.
Now your phone sees the connection as a regular Wi-Fi network, which allows you to run the standard update procedure through Settings → MainHowever, there's an important caveat: if both devices are running iOS, the system may recognize the internet source and still offer to update via cellular data if the corresponding option is enabled.
| Parameter | Direct update (4G/5G) | Via an access point (Hot spot) | Via a computer (iTunes) |
|---|---|---|---|
| Stability | Average | High | Maximum |
| Speed | Depends on the signal | Depends on the donor signal | Depends on the PC |
| Battery consumption | High | High (on both devices) | Low (charging) |
| Complexity | Low | Average | Average |
⚠️ Attention: When using an access point, monitor the heating of the host device. Simultaneously transmitting and receiving data in modem mode can cause the communication module to overheat and automatically disable the modem function.
Download problems and their solutions
Even with a stable internet connection, users often encounter errors when downloading updates. The most common issue is the message "Unable to check for updates." This may be caused by a server outage. Apple, incorrect date and time settings, or a conflict of network settings.
First, check that the date and time are set correctly on your device. Inconsistencies in the time can cause security certificate errors, which can block the connection to the update server. Go to Settings → Main → Date and time and turn on the option Automatically.
If the issue persists, try resetting your network settings. This will delete all saved Wi-Fi passwords and cellular network settings, returning them to factory defaults. Path to this function: Settings → Main → Transfer or reset iPhone → Reset → Reset network settings.
- 🔄 Reboot: Simply turning your phone off and on solves 50% of network problems.
- 🚫 VPN and proxy: Disable any active VPN services, they may be blocking the connection to update servers.
- 🗑️ Deleting a file: If the download is interrupted, delete the temporary update file from the storage and start again.
Where is the update file located and how do I delete it?
Temporary update files take up storage space. To delete them, go to Settings → General → iPhone Storage. Find the iOS version (e.g., iOS 17.1) in the list and tap "Delete Update." This will free up space and reset the download process.
Updating via recovery mode (DFU)
In cases where standard methods don't work or the device gets stuck in a reboot loop after an unsuccessful update attempt, you'll need to use recovery mode. This "heavy artillery" allows you to reflash your phone even if the operating system won't load correctly.
To enter this mode, you need to perform a certain sequence of actions with the buttons, depending on the device model. iPhone 8 and newer, you need to quickly press and release the volume up button, then the volume down button, then press and hold the side button until the screen goes dark, but continue holding it while connecting the cable to the computer.
The computer will detect the device in recovery mode and offer options Restore or Refresh. Select Refreshto attempt to reinstall iOS without losing data. The program will redownload the latest firmware version and perform a clean installation. The process may take up to 15 minutes, and the phone's screen will be black.
The importance of backup before the procedure
Any software intervention carries a minimal, but existing, risk of data loss. Before downloading and installing an update without Wi-Fi, especially from a computer or in recovery mode, it's crucial to create a backup. This will allow you to restore your contacts, photos, and messages in the event of a failure.
You can create a backup via iCloud if you have a stable, albeit slow, connection, or locally on your computer. A local copy is more reliable and faster, as it doesn't rely on internet speed at the time of the backup. iTunes or Finder Select "Create a copy now" and wait for the process to complete.
Don't neglect this step, even if you're confident your network is stable. File system errors or a sudden power outage during an update installation can corrupt the device's database. Having a fresh copy will save you hours of trying to recover information.
Frequently Asked Questions (FAQ)
Is it possible to update an iPhone via Bluetooth?
No, it's not possible to update the operating system via Bluetooth. The bandwidth of this protocol is too low to transfer gigabytes of data. Bluetooth is only used for initial pairing of some accessories or transferring small files, but not for iOS system files.
How long does it take to update via mobile internet?
The download time depends on your network speed (3G, 4G, 5G) and the size of the update. On 4G, downloading a 3GB file can take 15 to 40 minutes. On 3G, this process can take several hours, which is not recommended due to the risk of connection interruption.
Will my data be lost when updating via computer?
Selecting "Update" in iTunes or Finder preserves your data. However, if you accidentally select "Restore," your phone will be reset to factory settings. Always read any warnings on your computer screen carefully before pressing any buttons.
Why is the update button greyed out and inactive?
This could be due to several reasons: Apple servers are temporarily unavailable, the device doesn't have enough free space, or the battery is below 50% (if not connected to a charger). Also, check if your device has an enterprise management profile blocking updates.