915 Is

Hi

I am trying to find out why a 915 misses when on takeoff, light flicker at same time. Tried changing battery didn't have any effect. Next option was to download BUDS. Seems as much use as trying to read brail with ski gloves on. Contacted service agent who suggested sending the extracted file by emailing to him. Easier said than done. No information anywhere as how to do it. Seems the file is hidden deep somewher in the computer system. Can you help me. This diagnostic system is useless for people who break down thousands of miles from help on a weekend. Its hard for people in Australia to fly to America to do a course in a pandemic. Maybe an online course would be helpfull ???