The freeshop is ok. I have never used the freeshop launcher so I can't vouche for it. You will need though the encTitleKeys.bin file. If you have doubts about how to setup you should check the official freeshop page on github.
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Actually there's a gbatemp tutorial for this https://gbatemp.net/threads/wip-freeshop-open-source-eshop-clone.426573/
so the leaked ones are version 0 and the freeshop/eshop ones are version 16?