I need Virtual Installers: Firewall OS for KVM in version VI-18.54_MR-4-1.KVM-429.zip

support.sophos.com/.../KB-000043162

Thank you very much for the answers, there I can see that this version appears, however I need exactly the version VI-18.54_MR-4-1.KVM-429.zip

Could you help me with that?

Sorry, these are the available downloads.
Maybe, if you have a subscription, you could try by raising a support ticket

Hello Ronald Tiapa,

Thank you for reaching out to the community, please find the links to download the virtual SFOS VM images below:
1.) VM images - https://download.sophos.com/firmware/VM/index.html
2.) SFOS Installers - https://download.sophos.com/network/SophosFirewall/installers/index.html