Companies used to use custom flashes for their flashcarts until Nintendo started blocking them, hence the result of spoofed flashes of normal games now on just about every flashcart you see. The problem with the R4i SDHC Dual-Core 20XX, R4i SDHC Gold Pro 20XX, R4i SDHC RTS Lite 20XX, and the R4i SDHC 3DS RTS/B9S isn't related to the flash, but the actual kernel itself.
From DS Ntrboot flasher's release page, "R4i SDHC cannot support restore feature; it related NDS memory limit" and "These mean if you haven't compatible backup, you will lose permanently flashcart feature, if you have backup, you can restore using ntrboot_flasher", the latter of which is for the 3DS. I really don't know why there is this limitation as r4i sdhc firmware is 2MB (vs R4i Gold which is 4MB), so the memory limit thing confuses me. If you have a 3DS, though, it should be quite doable. You could, of course, try building a custom version of ds ntrboot flasher with a second flash cart if you're adventurous.
Last edited by kuwanger,
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