?> **Remarque** Votre carte SD devra être formatée en FAT32. Si votre carte SD n'est pas formatée en FAT32, utilisez [GUIFormat](http://ridgecrop.co.uk/index.htm?guiformat.htm) avec 32k (32768) en taille d'unité d'Allocation pour la formater. **Ne nommez pas** la carte SD en tant que `wiiu` ou cela causera des problèmes avec les homebrews.
- The <ahref="docs/files/Patched_IOS80_Installer_for_vWii.zip"download>Patched IOS 80 Installer for vWii</a>. ([Source](https://github.com/Lazr1026/Patched-IOS80-Installer-for-vWii))
1. To make sure you don't lose the files, copy the `slccmpt.bin`, `otp.bin` and if you chose to go with a full backup, `seeprom.bin`, `slc.bin`, and `every mlc.bin.part` file to your computer.
!> If for any reason, the Wii U is turned off while patching IOS 80, your vWii will be bricked. This can be fixed by either extracting the IOS 80 from your previously made NAND backup and then replacing it over FTP or by [reinstalling IOS 80](recover-vwii-ioses-channels).
!> Installing custom System Menu is a definite brick risk and you should always have an effective backup before installing one but when done right, won't brick the vWii.