My friend is trying to install some games to the Wii U but his SD card needs to be FAT32 to use WUP Installer.. how can he format an SD Card to FAT32 within the vWii or Wii U?
He also has an Android phone but is not rooted (fat32 formatters need the phone to be rooted)
No. Since the WiiU formats it´s own format (not Fat32). The WiiU DOES Support Fat32 only for SD-cards...but it doesn´t come with it´s own formating-tool dude.
Thus you need to format your SD-card via a (foreign) PC and/or smartphone/Tablet. The hell, some other gaming-console.
The WiIu only uses a propriatery Nintendo-format. The second you put in a new mass-storage it asks to format it and thus you cannot read it on a PC, since it´s garbled data (encrypted).
Sorry. There´s no workaround for that. You need a smartphone, with the necessary tool (and that means you have to use a unlocked smartphone, aka rooted) or a tablet. Some notebook/Laptop. Or a PC.
The hell- it doesn´t even matter how old your PC is. You can even use a Windows XP-PC if you have such an old machine. It would still work. You just need a Fat32-Tool.
Technically it would even work with a Raspberry Pi and a Fat32-tool lol.