下载校验与命令行
MD5
b7672a78105a067f15ab1558c882796d
SHA256
1a4be18ac8997aefe365feaa90508757cbf0bc3dff3ff11971bb3c2ed328e668
curl -O https://secure-appldnld.apple.com/iOS7.1/031-4642.20140310.FFN31/iPhone4,1_7.1_11D167_Restore.ipsw
# 校验文件完整性
md5sum iPhone4,1_7.1_11D167_Restore.ipsw # 期望 b7672a78105a067f15ab1558c882796d