Don’t do this, use a wallet which supports this option natively! Mempool charges you a extremely high fee for building the transaction for you
Discussion
Jade hardware i dont think supports rbf
you can throw that private key into an electrum installation and do it there.
Not a good idea because this will corrupt your key. Just connect the hardware wallet with electrum
Connect your jade with specter, electrum or something else and do it with that. Your key will be safe. You just use a different program to interact with your hardware wallet