I have a similar problem in moving 1.86 to 1.87 (went well!) then error on 1.87 to 2.03. The orange light does come on for about 10 seconds, then blue forever......No video/audio...I tried all the suggestions in this forum, but nada, just a blank screen and blue light.
In order to avoid confusion, I moved your posts to a dedicated topic just for your issue.
Please describe what happened when you tried to upgrade from 1.87 to 2.03. Did you the flashing procedure fully complete to 100%?