iPhone 6s+
Unsigned iOS

iOS 13.5.1 (17F80)

iPhone 6s+

iPhone_5.5_13.5.1_17F80_Restore.ipsw
Device
iPhone 6s+
Identifier
iPhone8,2
OS
iOS
Version
13.5.1
Build
17F80
Release Date
2020-06-01
Upload Date
2020-05-28
Size
3.70 GB
Status
Unsigned
SHA1
20319108c677170882b004a8aa1ec150d6c182a1
SHA256
d38ac5f5863ef96306d60dbb44c8d8c0d6a2263a8d26985eac360f2c47cc4508
MD5
89d3bdce2a641f2c660796fe26bfe222

iOS 13.5.1 Release Notes

iOS 13.5.1 provides important security updates and is recommended for all users.

Some features may not be available for all regions or on all Apple devices. For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

How to Restore iOS 13.5.1 IPSW

🖥

iTunes (Windows / macOS Mojave and older) & Finder (macOS Catalina+)

  1. Download the iPhone_5.5_13.5.1_17F80_Restore.ipsw file to your computer.
  2. Connect your iPhone 6s+ to your computer with a USB cable.
  3. Open Finder (macOS Catalina+) or iTunes (Windows / older macOS) and select your device.
  4. To Update (keeps data): hold Option (Mac) or Shift (Windows) and click Check for Update.
  5. To Restore (erases data): hold Option (Mac) or Shift (Windows) and click Restore iPhone/iPad.
  6. Navigate to and select the downloaded .ipsw file, then confirm.
  7. Wait for the process to complete — do not disconnect the device.
⚠️ Note: This firmware is no longer signed by Apple. iTunes/Finder may reject the restore. Use a tool like futurerestore if you have saved blobs.
⌨️

idevicerestore (Command Line)

An open-source command-line tool that restores IPSW files without needing iTunes. Useful for advanced users, automation, and custom restore workflows.

  1. Install via Homebrew: brew install idevicerestore
  2. Connect your device and put it into DFU mode.
  3. Run the restore command:
idevicerestore -t iPhone_5.5_13.5.1_17F80_Restore.ipsw
Common flags:
-eErase restore (factory reset) -uUpdate restore (keep data) -dEnable debug output -nDry-run — don't actually restore
🔓

futurerestore (Saved Blobs / Downgrade)

futurerestore allows restoring to unsigned firmware like this one when you have saved APTickets (blobs) from a tool like TSSSaver or shsh.host.

  1. Download futurerestore from github.com/futurerestore/futurerestore.
  2. Ensure you have a saved .shsh2 blob for iOS 13.5.1 (17F80) on your iPhone 6s+.
  3. Put your device into DFU mode and run:
futurerestore -t your_blob.shsh2 --latest-sep --latest-baseband iPhone_5.5_13.5.1_17F80_Restore.ipsw
⛔ Warning: Using --latest-sep requires the latest SEP to be compatible with iOS 13.5.1. Always verify compatibility before restoring to avoid a bricked device.
📲

Entering DFU Mode

DFU (Device Firmware Update) mode is required for most manual restores. The button combination varies by device:

iPhone 8 / X and later / iPad with Face ID
Press & release Volume Up → press & release Volume Down → hold Side button until screen goes black → hold Side + Volume Down for 5 s → release Side but keep Volume Down for 10 s.
iPhone 7 / 7 Plus
Hold Side + Volume Down for 8 s → release Side but keep Volume Down for 10 s.
iPhone 6s and earlier / iPad with Home button
Hold Home + Sleep/Wake for 8 s → release Sleep/Wake but keep Home for 10 s.

💡 Tip: In DFU mode the screen stays completely black. If you see the Apple logo or a "Connect to iTunes" screen, you entered Recovery mode instead — try again.

⇓ Download IPSW Firmware (3.70 GB)
iPhone 6s+
Other Signed iOS Versions
1 items iOS 13.5.1 (17F80)