Dump SHSH Blobs

Dumping shsh blobs allows you to downgrade iOS later.

Jailbreak your iDevice and install openssh

❯ ipsw idev proxy --lport 2222 --rport 22
   • Connecting proxy to device lport=2222 rport=22

❯ ipsw ssh shsh

   • Connecting to root@localhost:2222
      • Parsing shsh
      • Parsing IMG4
         • Dumped SHSH blob to 1249767383957670.dumped.shsh