iPhone 3G · iPhone1,2

iPhone 3G · iOS 4.2.1

8C148Signed

Catalog data · Last updated: Oct 22, 2026, 9:03 PM UTC

Restore IPSW for iPhone 3G: iOS 4.2.1, build 8C148.

Firmware information

Version: iOS 4.2.1
Build: 8C148
IPSW: Restore IPSW
Size: 0.32 GB
Release date: Not available
File name: iPhone1,2_4.2.1_8C148_Restore.ipsw
Download host: secure-appldnld.apple.com

IPSW download

Check the model and signing status before downloading.

Download IPSW

Download hostsecure-appldnld.apple.comiPhone1,2_4.2.1_8C148_Restore.ipsw

Back up before you restore. A restore can erase the data on the device. The identifier has to match, and a file you can download may still be rejected for restore.

Checksum

SHA-25698e5969c3baed660c9a26e94cd7ed4b3cdb7175900f448bcc2223bf885835ce0

SHA-1d2ed58586e8ca2153f2e2ec585bba8afc5173378

MD58b1657935408a1638b69740b282f62b3