SFOS 19.5.4 - Update to SFOS 20.0.1 MR1-Build342 - AP55 dead or not?

Hello,

Thanks for reaching out to Sophos Community.

Last supported SFOS for the mentioned AP above are SFOS 19.x (excludes the XGS series) 

Please refer to this KBA: https://support.sophos.com/support/s/article/KB-000035279?language=en_US

Thank you

Cheers,

I already found this article. But what will be the result when updating? Are the APs going to go offline or is there just "no official support for this device" anymore?

Hello,

After final software release (19.x), access points managed in SFOS will no longer be visible and can no longer be managed.

Regards,

that's bad news, but thank you.