Iii) Click link for 1.20d (scroll way down to find this) Ii) Click link for 1.20c (part way down 1st page) Not need to download and install the Reign of Chaos patches separately). Only need to install Frozen Throne patches if you have Frozen Throne expansion installed (You do The Frozen Throne PATCHES (1.20c and 1.20d)
Note you need both 1.20c and 1.20d patches to be current (see below). Try that if you haven't been able to patch.
I had to move the downloaded patches to the 'WarCraftIII Folder' in Applications, in order to get these patch to run. MOVE PATCHES TO 'WarCraftIII Folder' BEFORE APPLYING