Just a quick question am new here

How do you update your server? I know guide's also how to use data installer but :/ i have no idea from where i can get new (up to date) datapack and server files.
am getting this crush report error.
Assertion failed: i<=ArrayNum [File:f:\work\ct26_p4\2011_01_26\warfare2110\core\inc\UnTemplate.h] [Line: 405]
am sure that about server files.
Thanks