This is my first ever post. I was just doing a greenpoison jailbreak on an ipod touch 2nd gen and forgot to check the firmware. When I tried the Loader icon, it opened and closed. I checked the firmware version and it is at 4.1.

Since I used the 4.2.1 jailbreak on this device, what can I do to get everything to work? Can I just upgrade to 4.2.1 and Loader will work or will I have to restore, upgrade, and rejailbreak?

Advice please.