Jailbreak iphone4 on IOS 4.0

[maximus96]

I plan to sell my iphone4 when the 4S gets here. Its still on 4.0. I plan to keep it at 4.0 to be able to unlock it and fetch a higher price. Whats the best way to re-jailbreak it? I used jailbreakme.com at the time, does that still work or it is for newer IOS versions only?

 

[Crystal-RX]

I plan to sell my iphone4 when the 4S gets here. Its still on 4.0. I plan to keep it at 4.0 to be able to unlock it and fetch a higher price. Whats the best way to re-jailbreak it? I used jailbreakme.com at the time, does that still work or it is for newer IOS versions only?

Jailbreakme still work on 4.0.