Sometimes, when you download a major iOS update, you can see the progress bar crawl or get stuck on “Preparing Update.” This slowdown is common, often caused by high server demand, poor Wi-Fi, or low device storage. Don’t worry, you don’t have to wait all day. In my complete, step-by-step roadmap, I will show you how to fix your stalled iOS download or installation, ensuring you get the update you’re waiting for. Also see our related guide: Can’t update to iOS 26? Here’s how to fix it.
Why it feels “stuck”
Major iOS releases can be several gigabytes and Apple’s servers get hammered in the first 48–72 hours. If your Wi-Fi is congested, storage is tight, Low Power/Data modes are on, or a partial file is cached, the download can crawl or stall at “Paused,” “Preparing Update,” or “Verifying.”
Before you start
- Keep the iPhone on a charger and above 50% battery.
- Use fast, stable Wi-Fi (preferably 5 GHz).
- Make sure you know your Wi-Fi password (you may reset network settings later).
- Back up to iCloud or a computer in case you need the cable method.
1) Force-quit Settings and retry
Open the app switcher, swipe Settings away, relaunch Settings > General > Software Update, and try again.
2) Toggle Airplane Mode
Turn Airplane Mode on for 10 seconds, then off. This resets radios without a reboot and often bumps a stuck download.
3) Pause, then resume the update
If the progress bar shows Paused, tap Resume. If it’s spinning forever, proceed to step 8 to delete the cached file.
4) Switch to a better Wi-Fi band or network
If your router has 2.4 GHz and 5 GHz, join the 5 GHz SSID. If possible, move closer to the router or temporarily try another trusted network.
5) Turn off Low Data Mode and Private Relay (temporarily)
Go to Settings > Wi-Fi > (i) for your network and disable Low Data Mode. If you use iCloud Private Relay, turn it off briefly while you download.
6) Disable VPNs, ad-blockers, firewalls, or DNS filters
VPNs and network filters can throttle or block Apple’s update CDN. Disconnect any VPN and pause tools like Pi-hole or custom DNS filtering until the update finishes.
7) Free up working space (aim for 8–10 GB free)
Go to Settings > General > iPhone Storage. Offload big apps, delete downloads or old videos, clear Messages attachments. iOS needs headroom to unpack the update.
8) Delete the partially downloaded update and redownload
Go to Settings > General > iPhone Storage. If you see iOS 26.2 listed, tap it and Delete Update. Return to Software Update and start fresh.
9) Reboot the iPhone and router
Restart the iPhone. Power-cycle your router/modem (unplug 15 seconds). Fresh routes often improve throughput to Apple’s servers.
10) Turn off Low Power Mode during download
Low Power Mode can slow background tasks. Go to Settings > Battery and toggle Low Power Mode off while downloading.
11) Set Date & Time to Automatic
Go to Settings > General > Date & Time and enable Set Automatically. Incorrect time can interfere with update validation.
12) Sign out of Beta, remove old profiles
If you previously ran developer/public betas, remove any Profile under Settings > General > VPN & Device Management and reboot. Mixed channels can confuse the updater.
13) Reset Network Settings (safe for data, resets Wi-Fi and VPN)
Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. Rejoin Wi-Fi and retry the download.
14) Try off-peak hours
Evenings EU/US prime time are the worst. Early morning or late night often sees faster server response.
15) Use a computer (Finder on Mac or iTunes on Windows)
Connect your iPhone with a cable. In Finder/iTunes, select your device, choose Check for Update > Download and Update. Wired updates sidestep flaky Wi-Fi and can be much faster.
16) Switch DNS (optional)
If you control your router or iPhone DNS, try your ISP’s default or a well-known resolver. Sometimes a resolver’s path to Apple’s CDN is suboptimal; switching can help.
17) Turn off iCloud syncs that are saturating bandwidth
Temporarily pause large iCloud Photos uploads, Files syncs, or big App Store downloads on other devices sharing your network.
18) Ensure plenty of charger power during “Preparing/Verifying”
Those phases can appear stuck; they’re unpacking and checksumming. Keeping the device powered prevents throttling or retries.
19) If storage is tight, update via computer
When space is borderline, the cable method (step 15) is more reliable because the Mac/PC handles the download and staging.
20) As a last resort: Recovery Mode reinstall (keeps data if you choose Update)
Back up first. Then use Recovery Mode from a Mac/PC to Update (not Restore). This replaces system files without wiping your data. Only use if the device won’t complete the update normally.
Tips
- If you manage a family’s devices, schedule updates overnight and stagger them to avoid saturating your home network.
- Keep at least 15–20% of your storage free year-round; iOS updates and photos will feel faster.
- After updating, leave the device plugged in on Wi-Fi; Spotlight and Photos indexing may continue in the background.
FAQ
It varies by device, network speed, and server load. On a solid broadband connection, the download is often minutes; on launch day or slow Wi-Fi, it can take much longer. “Preparing” can also run for a while. Don’t interrupt unless it’s clearly stalled (no progress for 30–45 minutes).
Yes. Delete the update in iPhone Storage (step 8) and redownload. Do not force-restart during “Verifying” unless frozen for an extended period.
Apple typically requires Wi-Fi for major releases and it’s not ideal due to size and data caps. Use Wi-Fi or the computer method.
Normal updates preserve your data. Still, always keep a current backup before big releases.
That phase decompresses and checks the file. If it never moves, delete the cached update (step 8), free storage (step 7), and retry on better Wi-Fi (step 4).
Summary (ordered steps)
- Force-quit Settings and retry.
- Toggle Airplane Mode, then resume.
- Switch to better Wi-Fi; disable Low Data Mode/VPN.
- Free 8–10 GB; delete the cached update and redownload.
- Reboot iPhone and router; turn off Low Power Mode.
- Set Date & Time to Automatic; remove old beta profiles.
- Reset Network Settings if needed.
- Try off-peak hours.
- Use the computer method (Finder/iTunes).
- As a last resort, Recovery Mode Update after a backup.
Final Thoughts
A stuck or slow iOS update can be infuriating, but almost every issue, from overloaded servers to a small network glitch, has a straightforward fix. By systematically working through these steps, starting with the simplest restarts and clearing cached data, you should be able to get your iPhone updated quickly. Once complete, your device will be running the latest software, ready for all the new features. For information on other common problems, check out our guide to all reported iOS 26 bugs.
Airplane mode sped the update up from 2 hours to a few minutes.
Thank you!!