dont install winterboard its not ready yet and will put your phone into safe mode and you'll have to restore ! and don't install anything that requires winterboard cos it installs it at the same time ! I just found thids out the hard way 
1. Please make sure your using Windows XP 32bit on a physical machine. not a VM or 64bit version etc... Windows XP inside bootcamp seems to work fine.
2. If you dont meet this criteria then you will get random crashing of the exe file.
3. Please make sure you have the latest version of itunes installed.
4. backup your iphone contents before even starting the process.
I backed it up, but if everything goes right, will it restore my iPhone, or will it keep all of my info on there?
If everything goes through perfectly then all your existing contents will still be there.
Is it safe to restore phone back to original state via iTunes?
Ok I got the picture of the guy holding the iPhone. But that's it nothing has happened yet been about 6 minutes.
Plugged in -Yes
Windows-XP 32 bit
iTunes 8.2 installed
everything backed up.
What to do?
Wow, that was by far, the easiest jailbreak ever.
Total time, about 3 minutes.
Its a good feeling when it all works![]()
repeat the above process i've listed.
i.e. unplug, switch off iphone and close purplera1n, plug in phone and re-run purplera1n.
Yep - I had that problem. Did some searching elsewhere though, got it working and didn't need to restore. Here's how I did it:
1. Run the app - says "Done, waiting to reboot" or something - nothing happens.
2. Close the ra1n app
3. Unplug the iphone & switch it off
4. Plug it back in again
5. Re-run the app
6. Bingo - the rain guy appears on the screen. App says waiting to reboot again - this time it happened after a minute or so.
7. After reboot (& entered my passcode), new icon Freeze somewhere on the Springboard - run that, and press the Install Cydia button. Bingo.
I now have a JB 3GS 32GB :-D in UK on O2. Running SBSettings and Five Icon Dock, and that's it cos I'm new to this scene... better go and look for something useful!