Reading blake2b-256 hashed blocks in JS-ipfs

I use this for creating blake2 blocks - GitHub - multiformats/js-blake2: BLAKE2 multihash hashers for JavaScript multiformats It works. How do I tell js-ipfs to use this for reading and verifying blake2 hashed blocks?

go-IPFS can do blake3 blocks. What happens if I access blake3 block on node which can do only blake2 ? Will be block rejected or just not verified?