upgrade ISSUE from OMV 1.19 to 2.0.15 RPi2

hi all,

please, i would like to have a newest OMV for RPi 2.0.15 on my Rpi, but still im running on 1.19, kernel that im running on is:

root@raspberrypi:~# uname -a
Linux raspberrypi 4.1.6-v7+ #810 SMP PREEMPT Tue Aug 18 15:32:12 BST 2015 armv7l GNU/Linux

and on the OMV website is available the iso file. i must reinstall my whole server when i want the 2.0.15 version of OMV?

Thanks

ok, i found it here:

update from 1.17 to 2.0 on RPi2

after update performance statistics for network interfaces stopped working

also when i want add or edit nginx server, nothing happen....

and third thing that doesnt work are downloading torrents ... so i have now little messed up NAS