Download and Install iOS 4.1 (8B117) for iPhone 4 (GSM) / IPSW Downloads

iOS 4.1 (8B117) for iPhone 4 (GSM)

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

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Download (590 MiB)

This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore. The instructions below are included for reference only.

Windows

Install the latest version of Apple Devices from the Microsoft Store.
Plug your iPhone 4 (GSM) in to your PC.
Open Apple Devices, and navigate to your iPhone 4 (GSM).
Hold the Shift key on your keyboard, and press "Restore".
Select the iPhone3,1_4.1_8B117_Restore.ipsw file that you downloaded.
Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

macOS

Plug your iPhone 4 (GSM) in to your Mac.
Navigate to your iPhone 4 (GSM) in Finder.
Hold the Option or Alt key on your keyboard, and press "Restore".
Select the iPhone3,1_4.1_8B117_Restore.ipsw file that you downloaded.
Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

Linux

Install idevicerestore.
Plug your iPhone 4 (GSM) in to your PC.
Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
To perform a full erase restore, type idevicerestore -e iPhone3,1_4.1_8B117_Restore.ipsw and press enter.
Wait for the restore to complete, and the iPhone 4 (GSM) to reboot.

Windows

Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
Type Get-FileHash iPhone3,1_4.1_8B117_Restore.ipsw -Algorithm SHA1
The output of the command should match the following checksum: a3f8a333ca181146b862ca6a59c9a6e7c27eba0b. If it doesn't, you may need to redownload the file.

macOS

Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
Type openssl sha1 iPhone3,1_4.1_8B117_Restore.ipsw
The output of the command should match the following checksum: a3f8a333ca181146b862ca6a59c9a6e7c27eba0b. If it doesn't, you may need to redownload the file.

Linux

Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
Type openssl sha1 iPhone3,1_4.1_8B117_Restore.ipsw
The output of the command should match the following checksum: a3f8a333ca181146b862ca6a59c9a6e7c27eba0b. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum	`f8471bedfa17a1fdf5816782c8263a4d3403c2beb528b9be5917c6cdb3f88bee`
MD5sum	`f8471bedfa17a1fdf5816782c8263a4d3403c2beb528b9be5917c6cdb3f88bee`
SHA1sum	`a3f8a333ca181146b862ca6a59c9a6e7c27eba0b`

Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

iOS 4.1 Software Update

This update contains improvements, including the following:

• Game Center

- Send and receive friend requests

- Invite friends to multi-player games over the Internet

- Play multi-player games by auto-matching with other

players

- View Leaderboards and Achievements

- Discover new games from friends

• High dynamic range (HDR) photos on iPhone 4

• Support for TV show rentals on iTunes