Yo..
I am still rockin' a 3.2U OG model where everything works without any difficulty - ever; however, a friend has a 4.3U and I'm helping them out.
In the "package" wad directory there is this file: IOS80-64-v6943[TB+NAND].wad
A. What is the purpose of this?
2. Is it safe to replace IOS80...