What firmware should i jailbreak my iPhone 3G on?

OMFGWhatssup

New member
K,so i just jailbroke my iphone 3G under 3.1.2 firmware. About 30min before that i had it jailbroken on 4.2.1, i restored it to 3.1.2 becuase it was soo slow it wouldnt get out of safe mod. So my question: should i keep what i have: 3.1.2 jailbreak, or should i move up yo 4.0 jailbreak. Its obiously a MB model, im just thinking about speed and stuff i can do. Because 4.2.1 was very slow. its also a 8GB
 
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