Use recovery or DFU mode on a computer to erase and reinstall iOS when an iPhone won’t power on.
When a handset stays black or loops on the Apple logo, a clean reinstall can clear corrupt software and boot again. This guide shows safe ways to wipe and restore using a Mac or a Windows PC, what each mode does, and how to avoid data loss next time.
Factory Reset For An iPhone That Fails To Power On: What You Need
You’ll need a Lightning or USB-C cable, a Mac with Finder or a Windows PC with the Apple Devices app or iTunes, and a stable internet link to download iOS. If the battery is drained, give it at least 30 minutes on a charger before starting. If the screen stays blank after a full hour on power, move on to recovery mode. Apple’s page on phones that won’t turn on lays out the simple checks to run before you restore.
Reset Paths At A Glance
| Method | Use When | What It Does |
|---|---|---|
| Force Restart | Screen frozen or stuck logo | Reboots without erasing data |
| Recovery Mode | Computer sees “Connect to computer” screen or update failed | Lets Finder/iTunes update or restore iOS |
| DFU Mode | Boot loop, black screen, firmware fault | Deep reinstall that bypasses the current bootloader |
Prepare Your Computer For A Smooth Restore
Update macOS so Finder can fetch the right firmware. On Windows, install the Apple Devices app, or use iTunes if your build is older. Reboot the computer, quit VPNs and heavy download tools, and free up storage for a several-gigabyte file. Keep the lid open on a laptop so it doesn’t sleep mid-flash.
Use a short, data-capable cable. If your desktop has ports on the front and back, switch to a rear port that’s wired to the motherboard. Skip USB splitters during the restore. If you see numbered errors in Finder or iTunes, swap the cable and try again.
Step-By-Step: Use Recovery Mode To Erase And Reinstall
1) Connect To A Computer
Open Finder on macOS Catalina or later. On Windows, open the Apple Devices app or iTunes. Use a direct cable to the computer’s port; skip hubs while you restore.
2) Enter Recovery Mode
With the phone cabled: on iPhone 8 or newer, press and release Volume Up, press and release Volume Down, then hold the Side button until the “connect to computer” screen appears. On iPhone 7 and 7 Plus, hold Side and Volume Down together. On iPhone 6s and earlier, hold Home and the Top/Side button together. Keep holding until you see the cable-to-laptop graphic.
3) Choose Restore
Finder or iTunes should prompt to Update or Restore. Pick Restore to wipe the device and install a fresh copy of iOS. The download can be several gigabytes, so leave the cable connected and keep the lid open on a laptop. Apple’s official page on factory restore confirms that a restore erases all content and loads the latest iOS build.
4) Set Up Again
When the process ends, the phone restarts to the Hello screen. Follow setup prompts and sign in with your Apple ID. If you have an iCloud or computer backup, choose Restore From iCloud Backup or Restore From Mac/PC and pick the latest snapshot.
Go Deeper: DFU Mode For Stubborn Cases
If recovery mode fails, Device Firmware Update (DFU) can reload firmware at a lower level. Timing is strict. Read the sequence first, then try it with the phone connected.
DFU Steps For Face ID Models (iPhone X And Later)
Quick-press Volume Up, quick-press Volume Down, then hold the Side button for 10 seconds until the screen goes black. Hold Side and Volume Down together for 5 seconds, then release Side while keeping Volume Down for 10 seconds. The screen stays black, and Finder or iTunes should detect a device in recovery. Choose Restore.
DFU Steps For iPhone 7 And 7 Plus
Hold Side and Volume Down for 8 seconds, then release Side while continuing to hold Volume Down for about 10 seconds. The display stays off, and the computer should recognize the device. Start the restore.
DFU Steps For iPhone 6s And Earlier
Hold Home and the Top/Side button for 8 seconds, then release the Top/Side button while holding Home for 10–15 seconds. If the screen is black and the computer reports a device in recovery, proceed with Restore.
Why Restores Fail And What To Try
Most failures trace back to a flaky cable, a USB hub, antivirus that blocks the download, a full disk, or a laptop that sleeps mid-flash. Use a first-party or MFi-certified cable, switch to another USB port, quit security tools for a short time, and make sure the computer has free space for the iOS file.
If the firmware download finishes but the phone exits recovery before the flash starts, re-enter recovery and choose Update instead of Restore. Update keeps data while reinstalling system files; if that still fails, try Restore again.
Data, Activation Lock, And Privacy
A factory restore erases on-device data. If Find My is active and the device contacts the web after the wipe, Activation Lock will ask for the Apple ID that was signed in. That keeps lost phones from being reused. If you know the Apple ID and password, you can activate right away. If you don’t, you’ll need the original proof of purchase to get help at a store.
Safety Notes Before You Start
- Charge both the phone and the computer. A dead battery mid-restore can corrupt the install.
- Use the computer’s native USB ports. Dongles and hubs can cut power during large transfers.
- Close heavy apps on the computer so Finder or iTunes can keep the connection steady.
- If the restore stalls, force-quit Finder or iTunes, reboot the computer, and connect again.
Troubleshooting: Symptoms And Fixes
| Symptom | Likely Cause | Fix |
|---|---|---|
| Stuck On Apple Logo | Failed update | Recovery mode, try Update first, then Restore |
| Black Screen, No Logo | Firmware fault or low charge | Charge 60 minutes, then DFU restore |
| Error 4005/4013/4014 | USB or hardware line issue | New cable/port, different computer |
| Computer Won’t Detect | Drivers or cable | Reinstall Apple Devices/iTunes, swap cable |
| Exits Recovery Mid-Download | Long download timeout | Re-enter recovery, choose Restore again |
| Activation Lock After Wipe | Find My previously on | Sign in with the correct Apple ID |
Model-Specific Button Maps
iPhone 15, 14, 13, 12, 11, XS, XR, X
Use the Volume Up, Volume Down, then long Side press sequence for recovery. DFU uses the same buttons with strict timing while the display stays black.
iPhone 7 And 7 Plus
Side plus Volume Down handles both recovery and DFU with different hold times.
iPhone 6s, SE (1st Gen), And Earlier
Home plus Top/Side enters recovery; release Top/Side at the right moment to reach DFU.
When A Restore Can’t Help
If the phone took a hard drop or water hit, a software wipe won’t fix damaged parts. Signs include no vibration on mute, no charging chime, or odd heat near the logic board. In that case a repair visit is the next step.
Pro Tips To Prevent The Next Meltdown
- Keep automatic iCloud Backups on. Go to Settings → Your Name → iCloud → iCloud Backup.
- Make a full Mac or PC backup monthly so you have a local restore point.
- Leave at least 10 GB free on the phone before big updates.
- Update iOS on a charger with strong Wi-Fi to avoid half-done installs.
FAQs You Didn’t Know You Had
Will This Wipe Everything?
Yes. A restore erases content and settings. If you can, back up first. If the phone won’t power, the only path back to your data is a previous backup.
How Long Does It Take?
The download can take 10–30 minutes depending on your link. The flash and setup often finish in another 15–25 minutes.
Can I Erase Wirelessly?
If the phone doesn’t boot, remote erase can’t start. Use a computer. Some newer models can accept a firmware push from another device nearby when in recovery, but a cable restore remains the most reliable route.
What To Do Next If It Still Won’t Boot
Try DFU once more with a different cable and USB port. If that still fails, move to another computer. At that point, the odds favor a parts issue, not software. Book a visit and bring proof of purchase so the team can assist with Activation Lock after a board swap.
Pre-Restore Checklist
Before you wipe, run a short prep list on the computer and the phone. This reduces surprises during the flash and saves you from repeating steps.
- Turn off Bluetooth accessories near the phone so the restore screen doesn’t hand off by mistake.
- Disconnect other phones and tablets from the computer while you restore to avoid driver mix-ups.
- If you can still reach Settings, sign out of your Apple ID to speed up activation after the wipe.
- Write down Wi-Fi passwords and app logins you’ll need during setup.
- Keep a second cable ready in case the first one drops the link mid-flash.
After The Wipe: Setup Choices That Save Time
Once you reach the Hello screen, you can restore from iCloud, from a Mac or PC backup, or start fresh. A cloud restore brings back most app data and settings as soon as the phone signs in on Wi-Fi. A computer restore can be faster if you keep large photo libraries or many offline apps. Starting fresh gives the cleanest slate when you’ve chased random crashes for weeks.
Whichever route you pick, let the first backup after the wipe finish before you install lots of new apps. That first snapshot is your safety net if a fresh bug appears. After you land on the Home screen, open the App Store and redownload only the apps you actually use. That trims bloat and frees storage for the next update.