Download iOS 4.2.1 (8C148) for iPhone 4 (GSM)

You will have to note that you can only restore signed IPSW firmware files using iTunes or 3utools.

❌ This IPSW firmware is not being Signed by Apple

Firmware Identifier iPhone3,1
iOS Version 4.2.1
Release Date 1970-01-01
Update Date 2010-11-18
Sha1sum
b8b485c111fc25515487dbada0f2e630b66ccdb1
Sha256sum
md5sum
93957e7bd21f0549b60a60485c13206a
Size 0.61 GB
FileName
iPhone3,1_4.2.1_8C148_Restore.ipsw
Status

Download IPSW (0.61GB) Check device info
No Information About the release Notes available at this moment.