update firmware USG60 from 4.20 to 4.73 (latest)

zusg60

I need to update firmware a USG60 from version 4.20 to 4.73(latest).
What intermediate firmware do I need to perform to prevent the risk of configuration disappearing.

PeterUK

You should be able to to go to latest without risk

backup config is a good idea

PeterUK

I'm not sure the encryption for password will work from unit to another but you can do the following

Whatcan I do, if I forgot my USG FLEX/ATP/VPN password or cannot accessit anymore? – Zyxel Support Campus EMEA

PeterUK

You should be able to to go to latest without risk

backup config is a good idea

zusg60

thanks for the reply. One more question. How can I clone the configuration from one USG60 (version 4.73) to a backup USG60 (version 4.73)? is it possible to clone the configuration to 100%, or will it need to be further configured after cloning?

PeterUK

I'm not sure the encryption for password will work from unit to another but you can do the following

Whatcan I do, if I forgot my USG FLEX/ATP/VPN password or cannot accessit anymore? – Zyxel Support Campus EMEA