IRecovery

iRecovery is a client to communicate with various modes of the iPhone via USB.

Give thanks to "wEsTbAeR– and Tom3Q"

DFU 2.0 (0x1227)
It can upload a file, such as an iBSS, so that you can unplug and spawn a shell with 0x1281.

Recovery 2.0 (0x1281)
You can either send a file to 0x9000000 with ./iRecovery -f file, or you can spawn a shell with two way communication by issuing ./iRecovery -s

Download
Latest version always in the Chronic Dev SVN