I say it's probably 50/50 that it installs correctly the first time from what I've seen & then there still may be problems getting absinthe to launch or cydia locking up. If it doesn't do it right the first time you end up having to do a lot of unnecessary crap to attempt it again.
I'm not sure if there is an ETA. Here's what I'm going by:
"Once all the bugs in the flow are worked out, we’ll also incorporate it into the redsn0w GUI (but still leave the CLI freely available too). In order to maximize the chances of the jailbreak working for everyone, the redsn0w GUI will use native Apple iTunes libraries — this technique is slightly different than how the Chronic Dev GUI handles communications, and should provide nice combined coverage for all the odd computer configurations out there." - Dev Team Blog
Having a difficult time here. Takes me to the screen 'Beginning jailbreak, this may take a while....'
but nothing happens even after 30 minutes, it does not progress. I wasn't going to JB but I want to try the Siri Extension Assistant.
ughhh...what a pain. The spinning indicator in the status bar at the top stops spinning and disappears, and the whole thing just stops working. I'm using Windows and Absinthe v. 03