Downgrading firmware on my A05 dvdr drive

i have installed the 1.30 2xall firmware and wanna downgrade back to 1.00 firmware. who can i do it if i flash it it terminates with errors. can some one please help me. Thanks…

Go over to firmware flash forum, browse to the downgrade firmware section, download the firmware, and type in all uppercase (lowercase will not work) “UPGDVD /F”