Apple might have fixed the exploit that uses the new devices LimeRa1n iOS

As we read in the ModMyi forums , some users who have recently purchased a iOS iPad 4.2.1 Jailbreak preinstalled can not LimeRa1n using the exploit.

Confirmed the news, the iPhone 4, the 3G iPhone, iPad, iPod 4G and Touch 2G Apple TV are purchased from next week could bring this new hardware revision that prevents jailbreak using the elaborate exploit by Geohot.

If any of you we can confirm the same problem would be appreciated.

Source: Redmond Pie