Apparently so, there's also a way to trim the ps4 files from 29gb to 14gb and migrate the savegame from the Japanese version to the English version.
I'll reply if it's successful, trying to download 30 gb from my own MEGA folder takes some time.
Edit: First try with the cleaned up files didn't...
My game works fine with 250 songs and there's also a mod to bypass the long game intro load screens.
There's a Chinese BBS forum where you can download the full 30+ GB Megamix files, just need to copy paste into your SD card. You can try Google'ing for "switch初音未来 音乐补齐补丁 (248首)".
Do note that...
Tried your method, doesn't work. It just flashes green, ReiNX 1.6 loads and gets stuck at "Patching OS" and just stops. Had the microSD card in two different directions, no dice.
PC can't read it as well.
Edit: Stupid me didn't rename the payload. They should really include instructions on a...
Try going to the website and searching for the card only option, you can't find it unless you already have the link. The only results are the 2 acekard bundle with compulsory microsd and the cheapest is $34.