I consider myself a newcomer to the iPhone world, so I expected waste time (and gallons of sweat) to jailbreak an iPhone 4 but after I tried (and claimed the refund from) iphonejailbreakunlock.org I was lucky to find a post at iphoneros.com (spanish) site[2], telling that the Evad3rs Team were able to jailbreak iOS up to 6.1.2!
No redsnow, no .IPSW files, I just downloaded the (tiny) package from the main site[3], ran it and voila! Everything worked like a charm. :)
More information:
- http://www.macworld.com/article/2010812/bugs-and-fixes-troubleshooting-ios-6.html
- http://iphoneros.com/30416/evasi0n-1-4-para-ios-6-1-2-ya-disponible
- http://evasi0n.com/