Problem: editing items / updating client files

Hi everyone,
I've got a pserver (v0.15.12) and want to change the values, level requirements and special options of some items.
e.g. "Zodiac Weapons" shall give x1.05 accurancy.

I've allready edited inside the serverfile DR2_def - TB_DefItem the value for "LevelLimit" an "Abi03".
Under TB_DefItemAbil I added a new line containing probrably the correct data.
But in the game I neither see a change of required level nor an additional option.
(Both for the weapon I've allready got and for the one I can purchase at NPC)
Out of this I guess the information for the client stands in Data\4_Item.dat . (Please correct me if I'm wrong.)

Does anyone know how to update the client files? Or at least has a clue how those files are encrypted?

Thank's for reading and every hints or solutions.
BlackMagic09

you need to update your client table, you can find your last table on ...\Patch\Contents\

Thank you Levi7851, it worked.
(So the task really was only to copy TB.BIN and TB2.BIN from Serverfiles to Client :-) )