How to update from 0.9.8.519 version?

Apparently, with my hosting I got CWP version 0.9.8.519. 
At least that I can see from /usr/local/cwpsrv/htdocs/resources/admin/include/version.php
I can't access CWP page - it shows just blank page.

How should I proceed with upgrade? Note that I have CentOS7.

I tried with sh /usr/local/cwpsrv/htdocs/resources/scripts/update_cwp
but i got this:

PHP Fatal error:
The encoded file /usr/local/cwpsrv/htdocs/resources/admin/include/cron.php has expired.
 in Unknown on line 0

Thanks.

since it's expired you would need to do a manual update, the best would be that you try to contact support

since it's expired you would need to do a manual update, the best would be that you try to contact support

I managed to update it myself, but thank you anyway