How to unlock an iphone 3g/3gs 4.2.1 ,4.1

This is an easy way to jailbreak and unlock your iphone 3g/3gs not for 4
Jailbreak in 4.2.1 is untethered (3g/3gs) with old bootroom and tethered with new bootroom... In 4.1 is untethered both (old and new bootroom)
If you have an iphone 3g/3gs in 4.2.1 with new bootroom and an apple computer you can do untethered jailbreak with redsnow 0.9.7b3.. from here: sites.google.com/a/iphone-dev.com/files/home/re…
For windows will be released soon... if you do this with redsnow 0.9.7 b3 you must restore it before that... (is the same way with the redsnow 0.9.6 (VIDEO)
rapidshare link for redsnow 0.9.6 b5 (i prefer this): rapidshare.com/files/433818081/redsn0w_win_0.9.…
dev-team blog (blog.iphone-dev.org) link for redsnow 0.9.6 b6:
windows : sites.google.com/a/iphone-dev.com/files/home/re…
mac : sites.google.com/a/iphone-dev.com/files/home/re…
if redsnow doesn't open or work perfectly in windows 7 try this: run redsn0w as Administrator in "XP Compatiblity Mode"
!!!!!!SOS!!!!!!! IF YOU HAVE AN IPHONE 3GS/3G WITH NEW BOOTROOM AND YOU JAILBREAK IT IN 4.2.1 IF YOU REBOOT IT THE CYDIA WILL CRASH (DON;T OPEN) TO OPEN CYDIA DO WHAT EXACTLY IN VIDEO BUT NOW CHECK ONLY "JUST BOOT TETHERED NOW' AND YOU ARE READY... YOU NEED TO DO THIS EVERY TIME THAT YOU REBOOT YOUR IPHONE 3GS/3G (NEW BOOTROOM) UNLESS YOU DON'T NEED THE CYDIA: youtube.com/watch?v=hhU1zUj8Rs8