What is Pluvia? =============== Pluvia allows you to untethered downgrade your iPhone 4 without SHSH blobs! It uses the iOS 7.1.2 iBoot exploit "De Rebus Antiquis" by @xerub and @dora2-iOS. Beta 1 Limitations ================== Only for Mac! Only supports iPhone3,1. Only supports iOS 6.x, 7.0.4, and 7.0.6. Can only jailbreak iOS 6.1.3 NOTE: 8GB iPhone 4's can only run iOS 6 and newer, NOT iOS 4 or 5. This almost certainly can't be fixed. How to use Pluvia ================= 1) Creating the patched IPSW Run ./make_ipsw.sh <Input_IPSW> jailbreak (if you want to jailbreak) Or run ./make_ipsw.sh <Input_IPSW> (if you don't want to jailbreak) 2) Restoring the firmware Connect your iPhone 4 and put it in DFU mode. Run ./restore.sh <Patched_IPSW> Wait for that to complete. When your phone reboots the Apple logo should blink and then it will boot the older iOS! IMPORTANT: The second time you open Cydia (right after "Preparing Filesystem"), it will crash. I don't know why. Just reboot your iPhone and it will work. Getting out of recovery mode after restoring to stock iOS ========================================================= Run ./make_ipsw.sh <Any_Supported_Input_IPSW> reset Connect your iPhone 4 and put it in DFU mode. Run ./restore.sh <Reset_NVRAM_IPSW>