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- Jan 19, 2011
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I have a iPhone 4 on 4.2.1 and a pc is there currently a jailbreak I can do that is untethered?
Before 10th of Feb for 4.3 to be released officially I was told by a developer.
Looking forward to an untethered JB. If you got your iphone from the shop with 4.2.1 on it like I did, you wont be able to have an untethered JB at all yet as you cant downgrade to 4.2b.
You could always downgrade it if you have the SHSH files
SHSH files are unique to every device. You don't need to be on a firmware to get the SHSH's if you use cydia, but you have to be able to load cydia when the firmwares are still being signed by apple...