Updating your wii
It utilizes homebrew as a stepping off point, but Custom Firmware is still the goal.
Nintendo Wii owners who received notification that a new firmware update (4.2) is available need to hold off on upgrading.
That means the following: “Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience”.
Prior to today, Wii U’s last update was in September 2018.
Out of nowhere, Nintendo has released a new update for Wii U.
Version 5.5.4 is now live for all system owners worldwide.
Nintendo's technical support forum is currently lit up with reports that consoles are locking up while downloading the update, and will not reboot when unplugged and restarted; Neo GAF is also listing similar reports, with "non-HBC" Wii owners claiming "bricking" as well."The problem appears to lie with an incredibly shoddily programmed update to boot2 of the Wii," reads this forum announcement on Neo GAF.
"boot2 is basically the area that "starts up" the Wii.
This guide has the end goal of taking a completely unmodified Wii U from stock firmware to Coldboot Haxchi powered Custom Firmware.Nintendo has yet to publish any notes about today’s firmware upgrade.