Had to reflash Lakka today since trying to play Satellaview corrupt my retroarch. Thought I would upgrade from Lakka 2.0 to 2.1 while I was at it. Unfortunately, 2.1 would not boot for me on my Rp3. It was for sure the correct Rp3 version 2.1 from the Lakka website and confirmed the MD5 hash. Yup, reflashed three times total to no avail. Reverted back to a clean install of 2.0 and it worked 1st try.
Same here. brand new card and downloaded and nothing shows. Just a blank screen.
Using Raspberry Pi 3 Model B+
Don’t know if you tried version 2.0 but that’s the one that is working perfect on my Pi 3.