Quick video where we see the upgrade process to Veeam Backup and Replication v11a, Veeam Cloud Connect v11a, and finally, Veeam Service Provider v6.
Hope it gives you some ideas, like enable the maintenance mode at the start, and disable it at the very end :)
00:00 - Intro
00:15 - Welcome and quick overview to Veeam v11a/VSPCv6
02:44 - How-to upgrade VBR/VCC to v11a
09:43 - How-to upgrade to Veeam Enterprise Manager v11a
12:53 - How-to upgrade to Veeam Service Provider Console v6
18:53 - Quick overview to VSPC v6
21:10 - Quick recap and goodbye