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flashcard-archive
Discontinued An archive of all the firmwares for Nintendo DS flashcards [Moved to: https://github.com/DS-Homebrew/flashcard-archive] (by lifehackerhansol)
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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.
Looking at my R4, that indeed looks like a original R4, apparently you dont even need the NTR Launcher I linked in the other comment, if you already have TwilightMenu++ installed on ur 3ds you can boot into it using that and the firmware you should use is this https://github.com/lifehackerhansol/flashcard-archive/tree/main/R4_original_M3_Simply
If you want to skip all the button pressing and launch the R4 right from the HOME menu, you should get NTR Launcher. Will place an icon on the HOME menu that instantly boots the Slot-1 card.