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by thinkmassive 1681 days ago
In the Future Improvements section on the linked blog post to the original mod it says "HS400 mode is supported by hardware but it's not currently supported by the sunxi-mmc drivers in the Linux kernel."

So it seems plausible that support for the faster HS200 mode (that's enabled by this mod) was added after the original devices shipped. Just a guess though.

If you do the mod and it causes issues, you can revert to the original DDR52 mode through software, assuming you didn't break anything while soldering.