* [[BootMii]] as an [[IOS]], is installed to this slot.
* [[PatchMii]] installs to this slot.
* [[3.4]] included a copy of [[IOS9]] as IOS254 to overwrite PatchMii, as that was the last place (besides [[IOS16]]) the [[signing bug]] could be exploited. Each IOS9 update was then copied to this IOS.
* The [[4.3]] update included a [[Stub IOS]] in this slot, in an attempt to overwrite BootMii/IOS, which succeeded for BootMii versions earlier than 1.4. Versions 1.4 and above use version 65281 to prevent this.
| Included in
[[3.4 ]] update to block [[PatchMii]] (copy of [[IOS9]]).