plesk update 12.0.18 to 12.5.30, not 17.0.17

Good evening,

I have a vps server at OVH (France)

When I get the vps there is plesk 12.0.18 with a webpro license.

Once I logged in plesk asked me to do the update

See picture

Capture d’écran 2017-03-31 à 15.48.03.png

But twice I upgraded to version 17.0.17 and twice I had a problem, I could not connect to my plesk.

I would like to know if I can do the update version plesk 12.5.30?
Because this version stays and works very well on my other server with...

plesk update 12.0.18 to 12.5.30, not 17.0.17