My goal is to add Thai fonts so pdfs and web pages will display correctly. I installed z4root, ran root, then enabled SuperUser. In ES File Explorer, I went to the folder with the fonts I wanted. They were not write-protected and they were 8.3 format TTFs. I selected all, then copied them. A "clipboard" appeared with all the fonts there. I then went to the directory /system/fonts and ran the "paste" command from the clipboard. One by one, each font produced a "fail" message, the identical error that I got BEFORE I rooted the device. I did this several times and occasionally with just a single file, but always the same result. Can someone tell me what, if anything, I am doing wrong?