I'm using greenpois0n but when I enter DFU mode, the processing stalls on a certain step - noting that it has "failed to get appleS5L69... after 1
...after 2
...after 3
...and so on. I've done exactly what the instruct video mentioned: hold down home and power for 10, then continue holding home for 20, then click jailbreak. Any suggestions? Thanks.