How to Jailbreak (really simple):
Make sure you have your official sim which came with the iPhone originally
because when you upgrade or update to iPhone OS 4 --- 4.0.1 your iPhone has to be activated in order to jailbreak from your device directly
Instructions:
Step 1. Update to 4.0.1 or download firmware below
Step 2. Then restore your device
Step 3. After, on your idevice (your iPhone) open up safari
Step 4. On the address bar enter addy
Step 5. Read info, Then slide to jailbreak
There You Are Done!
Do it now before Apple put a stop to it
To unlock iPhone 3gs on iOS 4.1 you have jailbreak your device first.
yes
Jailbreak it?
Sure you can unlock your iPhone 3gs but before that you have to jailbreak iPhone 3gs.
use the newest version on green poision
Yes
If you have the iPod Touch 3G or 4G (current one), an iPhone 4 (not the iPhone 4S) or iPhone 3GS, or the original iPad (Not the iPad 2) then use redsn0w 0.9.10 to jailbreak. If you have an iPad 2 or, iPhone 4S, you cannot jailbreak it on iOS 5.0.1 yet
Yes you can jailbreak the iPhone 3Gs. There are several different ways of doing it and there is a matrix that you can match up your particular device's model, firmware, and boot loader information and it will tell you what program that is best recommended for your device. The link has been attached in the Related Links.
Here's a guide on how to jailbreak your iPhone iPod or iPad ios 4.2.1 and all previous models: http://reviews.ebay.com/How-to-Jailbreak-Your-iPhone-4G-iTouch-or-iPad-4-2-1_W0QQugidZ10000000020131595 I followed the step by step instructions and jailbroke my iPhone within minutes!
The easiest way is to go to the website Jail break me (located in the related links below) on your iPhone itself and it does the work for you.
iPhone/iPod Touch/iPad iPhone: 1G, 2G, 3G, 3GS, 4 iPod Touch: 1G, 2G, 3G iPad
Sorry, but if you have an iphone 3GS, then there is really no way to jailbreak it yet, atleast not a safe jailbreak that will work, but if you want to change the black theme on your apps page (behind all your applications) then go to settings, general, accesibilaty, and then you should see something that says white on black, change it to white and your iphone setup will be a lot cooler. Hope I helped a little.