Programming the TW8820-LA1-CR On-Screen Display

Hi, I have the OSD of TW8820-LA1-CR programmed to show an English word in the upper-left side of the display. But, now I want to change the word to something different. Is it possible to reprogram it to show a different word or will I need to use a new TW8820 for the changes I require? Also, if reprogramming is possible please provide me a guide for the same.