Considering that the Chinese "okayvision.com" company's web site is now a porn site, I don't think your chances are finding much are very good...sorry I can't be of any help.
Perhaps another forum member has some ideas or information. Unfortunately, many of the cheaper Chinese cameras offer very little support so if anything your assistance will likely come from a private individual such as a member of this or another forum. It may take so time so I suggest you be patient....and good luck!