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External USB Hard Drive if you want to install and launch titles from USB.A computer capable of reading SD card and internet access.Make sure your SD card has no name or you use lowercase letters. Do NOT give your SD card a name with capital letters.At least get otp.bin and seeprom and you'll be fine. I recommend using " GuiFormat" *note* If you don't want to backup your entire nand that's okay. You'll need to use a third party tool to do so. Windows will not format your large SD card to fat32. For example, if you have a 32gb Wii U then you'll need a 64GB SD card. You'll need the next size up from your Wii U internal memory size. You can copy the vWii stuff back after we're done.) Make sure that your SD card is large enough to backup your entire sysNAND. Blank SD formatted to FAT32 (IF you have one that you are using for vWii just copy all your data to your PC first and reformat it to FAT32.Read up on everything so you can make an informed decision on what will work best for you. Unlike other guides I will not simply give you a set of instructions and tell you to follow it blindly. This guide will give you all the current hacking options and give you a choice on what works best for your situations. This version was the best for a long time because it had a more stable web exploit, but now a new stable version is available for 5.5.3 ! There's no reason to stay on 5.5.1 anymore. I think it's better to go to 5.5.3 right away and forget about the problems you'll have if you stay on 5.5.1 (game update not working, game launching giving an error, no eshop access, CBHC removed after updating to 5.5.3).
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Even if it's entirely possible to stay on 5.5.1 version and fully hack the console, it had some disadvantages: It required more steps and tools to hack it, and at the end you'd had more issues staying on a lower firmware. This guide used to cover multiple firmware version (5.5.1, 5.5.2 and 5.5.3), but I decided to drop support for hacking the Wii U on lower firmware. Last updated (added new stable web exploit for 5.5.2-5.5.3)
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