Hello, i got the rs-97 some days ago, and tried to change the bootloader to be able to run the custom firmware from the external SD card... as a result (i was already using the custom firmware) not only i wasn't able to run the OS from the SD card, but the original OS never booted properly again... i'd like to know whereto find and how to reinstall the original bootloader so i can run the original firmware again... thanks in advance for any tips 