A few thoughts…
I ran into a problem of not having enough power to my Dreamcatcher 2.03. It would start and get a little way into the boot process and then shut itself off. I think I got 3 or 4 leds, but not much blinking. Using a better power adapter resolved that issue for me.
I didn’t have any luck with the uart at a baud rate of 9600. I tried 115200 and it worked fine. 115200 is probably excessive and I suspect there are other baud rates that would work as well, but I just stopped experimenting as soon as I found one that worked.
Also, is this the serial adapter you’re using? I’m just curious to make certain that yours is on 3.3v rather than 5v.
– Nate - KE0PFS