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vWii-Decaffeinator
vWii Decaffeinator allows you to restore your vWii without the need of a NAND Backup
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
And now for why I'm so casual about you basically losing half your Wii U's functionality-- You can easily get it back! Once you redownload homebrew (preferably via this guide), and have a NAND backup (this is important in case something goes wrong!) saved to a safe place (like a cloud storage service), download something called "vWii Decaffinator" from either the Homebrew Appstore on your Wii U, or just add it manually by downloading the latest version (as of writing) here and yeeting it into wiiu --> apps with all the other homebrew.