PLEASE HELP! sony u18a to liteon 832sw

i just bought my first dvd±rw sony u18a and i changed the firmware to liteon 812 and then 832sw but i cant burn any dvd i load again the sony firmware u18a and i get no error but when i try to read the image or only data like mp3 there is nothing on the dvd and i get an error of disc, please help! :bow: :bow:

You must patch all SOHW-832S firmwares that you wish to flash to your drive to enable crossflashing before using them. Use OmniPatcher for this.