Let's Encrypt on a Big-IP

Where can I get the 11.4 hook.sh & dehydrated scripts? I get error: + Done! + Creating fullchain.pem... Syntax Error: "default" unknown property

Looks like 11.4 using older syntax: ltm profile client-ssl /Common/clientssl { ca-file none cert /Common/default.crt cert-lifespan 30 cert-lookup-by-ipaddr-port disabled chain none client-cert-ca none crl-file none handshake-timeout 10 key /Common/default.key

while newer versions indeed using the "default" statement: app-service none cert /Common/default.crt cert-key-chain { default { cert /Common/default.crt key /Common/default.key } } chain none inherit-certkeychain true key /Common/default.key passphrase none }