Ipwndfu

ipwndfu is a jailbreak utility from axi0mX, released on 2017. The bootrom exploit, alloc8 enabled flashing custom ipsws, and thereby jailbreak or downgrade without SHSH blobs on both variants of the iPhone 3GS. It now also uses a new bootrom exploit, checkm8 to support A5 to A11 devices.

Uses

 *  enter pwned DFU mode 
 *  untethered downgrade 3GS and below
 *  untethered downgrade A5-A11 with SHSH blobs
 *  tethered downgrade A5-A11 without SHSH blobs
 *  decrypt any img3 or  img4 file with a KBAG using the GID Key
 * '' dump bootrom
 *  verbose boot on the iPhone X

Dependencies

 * libusb
 * pyusb

Credit

 * pod2g - steaks4uce
 * iPhone Dev Team - 24Kpwn
 * axi0mX - alloc8, checkm8
 * geohot - limera1n
 * posixninja, pod2g - SHAtter