I'm using the spl-token command line. What is the simplest way to change the token metadata (from the Metaplex Token Metadata program) and set mutable to false?


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After instigations, you can use metaboss CLI to apply change on your token metadata:

metaboss set immutable --keypair 'path of config.json keypair' --account 'mint token account'

Details available at : https://metaboss.rs/set.html

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