Cannot run configuration utility through serial console port

What I mean can be read from this manual chapter: [https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/pg_viprion2400/2.htmlc_viprion_cluster_management_about](https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/pg_viprion2400/2.htmlc_viprion_cluster_management_about) In particular, I'm trying to set the IP Cluster by the way explained in next URL: [https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/pg_viprion2400/2.htmlt_reuse_configuring_cluster_ip_address_config_util](https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/pg_viprion2400/2.htmlt_reuse_configuring_cluster_ip_address_config_util) I don't see anything when I log in by the serial console, neither a welcome message nor anything I type unless I enable the putty echo options. If I type config or tmsh putty doesn't show anything. It just replies something (actually the AOM menu) when I press the combination ESC (: B --- Set baud rate C --- Capture blade console I --- Display platform information P --- Power on/off blade R --- Reset blade Q --- Quit menu and return to console