Question regarding downgrading to 3.1.3 from 4.2.1 on an iPhone 3G...
Accidentally posted this in the iPod forum, hopefully this is the right place. If not let me know where I need to post this for it to be "on topic".
I am downgrading my friends iPhone 3G to 3.1.3 because it's much too slow with 4.2.1.
I am using the following method:
I had a few questions, if you all wouldn't mind:
It is currently jailbroken using redsn0w, will this cause any problems?
Will this remove any and all installed apps/settings/etc from the phone, or will they be carried over? If it does, is there a method of downgrading that saves all of the/some of the above?
Thanks for any help you can give.