About This Firmware
iOS 15.1.1
(build 19B81) is an official Apple IPSW
for the iPhone 13,
released on 2021-11-17.
The download is 6.16 GB and is served directly from Apple's CDN.
This firmware is no longer signed by Apple. Standard downgrades are not possible, but the file remains available for reference and advanced use.
Verify the download using the checksums below.
Filename
iPhone14,5_15.1.1_19B81_Restore.ipsw
Checksums
SHA-256
ade900107c1df6099ebcff65f9eb64103e7c4638c838ec2d08191464b1444e5a
SHA-1
483fc8e76e9c89f30a4d289c1c45cc1db5239276
MD5
24e13706631b365b2e96ebfb2479892e
Direct URL
https://updates.cdn-apple.com/2021FallFCS/fullrestores/002-34718/591DB3FA-9100-4B75-B107-A3CDA12F2337/iPhone14,5_15.1.1_19B81_Restore.ipsw
Other Devices
iPhone 17e
iPhone18,5
iPhone 12
iPhone13,2
iPhone 12 Pro
iPhone13,3
iPhone 14 Pro Max
iPhone15,3
iPhone 14 Plus
iPhone14,8
iPhone 5c (GSM)
iPhone5,3
How to Restore with This IPSW
iTunes / Finder
macOS & Windows- Download the .ipsw file to your computer.
- Connect your iPhone 13 via USB.
- Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina+) and select your device.
- Update (keep data): hold Option (Mac) or Shift (Windows) and click Update, then pick the .ipsw file.
- Restore (erase & install): hold Option / Shift and click Restore iPhone…, then pick the .ipsw file.
- Wait for the process to finish - do not disconnect.
Restoring will erase all data on the device. Back up first.
3uTools
Windows- Download and install 3uTools from 3u.com.
- Connect your iPhone 13 via USB and trust the computer on the device.
- Go to Flash & JB > Easy Flash.
- Click Import and select the downloaded .ipsw file.
- Choose Flash mode: Update keeps data, Restore wipes the device.
- Click Flash and wait for the progress bar to complete - do not disconnect.
Only flash firmware that matches your exact device model.
DFU Mode
Recovery tipIf your device is stuck in a boot loop or iTunes/Finder does not recognise it, enter DFU mode first, then select the .ipsw file as normal.
iPhone 8 / X and later
- Quickly press & release Volume Up
- Quickly press & release Volume Down
- Hold Side button until screen goes black
- Hold Side + Volume Down for 5 s
- Release Side, hold Volume Down 5 more s
- Black screen = DFU active
iPhone 7 / 7 Plus
- Hold Sleep/Wake + Volume Down for 8 s
- Release Sleep/Wake, keep holding Volume Down for 5 s
- Black screen = DFU active
iPhone 6s and earlier
- Hold Sleep/Wake + Home for 8 s
- Release Sleep/Wake, keep holding Home for 5 s
- Black screen = DFU active