If you just flashed the new opendingux firmware v1.2 and you cant wake the device back up after it sleeps you need the gmenu2x fix below.
Download then unzip the gmenu fix and copy the folder to your roms directory on the sd card. restart the rs-97 and run the command app. inside of command you have a left and right window pane. use the left window pane to navigate to the gmenu2x folder located in game/gmenu2x. use the dpad to arrow over to the right pane and navigate to roms/gmenu2x_fix folder. while you are in the folder, hit the y button and select all. Now hit the x button and select copy. It will ask if you want to overwrite. Say yes to all. Make sure both the left and right panes are in their respective folders so that you see the files.
The gmenu2x_fix can be downloaded from this link below
Download Gmenu2x.fix
Thanks to HercTNT Dingoonity for the above guide.