The Wii U 5.5.6 system update was released on August 29, 2022. This update was released in North America only.
|Release date||August 30, 2022|
|Version.bin version||624 (0x270)|
This update does NOT break any existing exploits.
Official USA changelog:
- Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience
VersionData, User Settings and the System Menu were updated.
When making a child Nintendo Network ID in the USA, Nintendo requires credit card verification to ensure the parent account is owned by an adult. The Wii U menu in 5.5.6 added messages related to the verification process, notably a new message asking parent account creators to contact support in order to complete verification. Since 5.5.6 was released on the day of the Wii U eShop not accepting any new payments, this is likely due to the Wii U not being able to add a card anymore.
5.5.5 -> 5.5.6[check]