Update from 9.1.6 to 10.0.3

Server
1

Hello!
Tell me please, how correctly to update the server owncloud 9.1.6 to 10.0.3?

System:
Ubuntu 14.04.5
Apache 2.4.7
Php 5.5.9
MySql 5.5.57

I correctly understand, that my at first need to update php and mysql?
I'm planning a manual update!

Thank You!

2

Please double check the docs - manual upgrade is in depth documented
https://doc.owncloud.org

3

I do not quite understand, can I immediately upgrade to 10.0.3?
Or do I need to update step-by-step (using intermediate versions)?

Thank You!

4

https://doc.owncloud.org/server/latest/admin_manual/maintenance/upgrade.html#upgrading-from-9-10-to-10-0-2