Hello guys, first of all, I'd like to thank @jock for your very powerful work, very patient with all us newbies and thanks too @fabiobassa for your always fast answer.
I have the R29 box that didn't run HDMI neither WI-FI, so I tested the new multiboot and the new minimal firmware and as the most people, it works flawlessly boting in pendrive, I could install in internal EMMC and everything is OK. So, to go ahead I tried to install the XFCE desktop environment in armbian-config, but wen I did it, the HDMI stopped working. The system still works behind the screen with my pi-hole server, but without Image in HDMI.
I just see and it still in led7 option. There are anything I could do to try? Could a desmeg of my board help? Or is necessary both, before and after desktop installation to help?
Any test could I do to help you guys to improve this firmware?