How To Brick A Yaesu FT-991A…
…Diligently upgrade it with Yaesu FT-991 *NOT ALPHA* firmware… The end result of uploading the wrong firmware was that the radio still seemed to work fine, but the spectroscope/waterfall no longer functioned. Nearly sent it back to Yaesu for warranty repair! Luckily reinstalling the correct firmware fixed it right up (and only took me three …