I did not need any fancy disassembler to determine that there does not appear to be any trace of the items mentioned in your first link (ATP_GetInfo{1,2,3,4}) within any of the files you attached.
After looking through one of the files, I searched Google for PZMM_K_Fun3, which found a very informative document titled "Reverse Engineering and Exploiting the BT
HomeHub 3.0b" by Zachary Cutlip of Tactical Network Solutions. There is a key and IV for the config file encryption given in the document, although the document also suggests that there's nothing particularly useful that you can do by editing a config file.