Mobile customized version, what do you mean?

Customized version means that you can choose the functions you need on the Russian OP website according to your own needs and make a special version of OPM.

If you don't need the download function of Russian OP, you can remove it when customizing, and there are some other functions to choose from, such as FTP management, which can reduce the size of Java programs and reduce the occupied space and memory needed for running.