hi. i just got a ipod tocuh (I think is second generation since its 8gb) and its on 4.2.1. version mc086LL (8C148)
is there any jailbreak for it? or a way to downgrade it?
iPod touch
* iPod touch 1G
* iPod touch 2G old bootrom
*
iPod touch 2G new bootrom (up to, and including, 4.1)
* iPod touch 3G (up to, and including, 4.2.1)
NOTE: There is NO such thing as an "8 GB iPod touch 3G." It is an iPod touch 2G with a newer bootrom.
* iPod touch 4G (up to, and including, 4.2.1)
You've correctly identified your device: you have an iPod touch 2G (new bootrom).
I have some good news and bad news about it, though (I'll start with the latter
).
The bad news is, there's no 4.2.1 jailbreak for your particular iPod. But don't despair; you can downgrade to
iOS 4.1 and use greenpois0n or limera1n for an untethered jailbreak.
Be sure to save your device's SHSHs for iOS 4.1 with Cydia/TinyUmbrella, to keep your ability to use those jailbreak tools!
QUOTE(metamaster @ Jan 27 2011, 11:33 PM) You can jailbreak it with Redsn0w, but it will be tethered (you will have to plug your device into your computer and rejailbreak everytime you want to turn it on). You might as well wait for a few days, since a new untethered jailbreak for 4.2.1 is going to be released soon (probably an updated version of Greenpois0n).