Apple iPhone 3G iOS 4.0.1 IPSW firmware
Apple iPhone 3G
Not signed
iOS 4.0.1
Build 8A306 For iPhone1,2, n82ap
Global · IPSW
A newer version is available for this region: iOS 4.2.1
Apple no longer signs this version, so a normal restore with Finder or iTunes will fail. Use a signed version unless you know you need this one.
Download
305 MB
Downloads from secure-appldnld.apple.com.
File details
- Device
- Apple iPhone 3G
- OS
- iOS 4.0.1
- Region
- Global
- Type
- IPSW
- Released
- Size
- 305 MB
- File name
iPhone1,2_4.0.1_8A306_Restore.ipsw- MD5
8a952dbd03fa5e85da1a31092c651a25- SHA-1
940bd2b36c646f6673419eab661ac1f13248e592- SHA-256
6d3f2c695229d03b4fe9297c681ffb509eaf5f1d4a316af893d15f674f330a52
After downloading, compare the checksum with the one above. If they differ, the file is incomplete — download it again.
Before you download
- Make sure your device’s model number is one of: iPhone1,2, n82ap. You will find it in Settings → About phone, or on the box.
- This file is for the Global region. Installing another region’s firmware can remove features or block updates.
- Apple devices can only restore versions marked “Signed”.
- Back up your photos, contacts and files first, and charge the battery above 50%.
How to install
Use Finder on a Mac or the Apple Devices app / iTunes on Windows to install an IPSW file. Apple only accepts versions it is still signing, so check the “Signed” label before you download.
Read the guide: How to restore an iPhone, iPad or iPod with an IPSW file