Just faced an interesting connectivity issue when installing JHFA61.
Issue:
After entering username when connecting via SSH, we see the message
"No supported authentication methods available (server sent: publickey)"
Resolution:
clish
set ssh server password-authentication yes
save config
Please note this may happen on an existing appliance where you have uninstalled an old jumbo and then installed JHFA61.
When doing a clean build with R81.10 and then installing JHFA61 I did not experience this issue.
TAC are aware.