By "root explorer" you mean exactly? I see 50 root explorers when I type this at google play! Can you give me a direct link? Are there any settings that I need to set? Sometimes the file begins to get copied, but its so slow that it will take 4 days for it to be copied.
I need it to transfer files to my root directory, since according to a few internet istructions, I need to access these files later with virtual terminal. The terminal shows the files are not there "there is no such directory of file".