After looking into available source code from other IM-ME hacks [Joby] found how the SPI baud rate is set, then went to work searching for that in a disassembly of [Travis’] binary. Once found ...

All hope is not lost though, as iOS hacker winocm has confirmed access to untethered jailbreak for iOS 6.1.3 via binary in his latest ... only confirmed that his code is tested with iOS 6.1.3 ...