Originally Posted by ZaX
Why would you stick to an old unsupported dev build? You can change to the latest one by only changing "dll" file and modules
And includes, configs, data and all other important stuff. Picking the files you want to replace will result in an abomination of different versions that js guaranteed to cause problems.
You/He should replace everything except user-modified .cfg/ini files in the configs folder. You may also leave the plugins unchanged as well, even though changes have been made there as well.