Check out my guide to watching videos on DSi without a flashcard. (tuna-viDS guide for DSi) Nintendo DSi (v1.4J) w/ TWiLight Menu++ nightly Nintendo Switch v1 unpatched (Hekate 5.6.5, latest Atmosphere) New Nintendo 2DS LL Orange and White (11.15.0-47J) [Luma3DS v11.0] [not region changed] Nintendo Wii U (broken gamepad, not modded)
DSi and New 2DS XL SD card specs: DSi: 128GB FAT32 SanDisk Ultra Class 10 microSD + standard SDXC adapter (obviously overkill, might do an SD swap) 2DS: 64GB FAT32 SanDisk Class 5 microSD Flashcard: 64GB PNY microSD
My DS flashcards: 2021 R4 3DS Upgrade SDHC Revolution GOLD Pro RTS r4isdhc.com