I use ubunta jammy 1.0.8 for desktop, a 32 GB sd drive, and I was able to achieve a new result: the image was recorded (there were problems with the sd card) and now I just have a red light on all the time, and the operating system does not boot, so the image is not displayed on the monitor, no

Hello, can someone help me with Armbian for this Android box, which seems to have a good configuration for a media center? I would like to know how to flash it and which firmware image I can install on it. Thank you. BBox 4K Specifications: Dimensions: 15x15x3.6cm SoC: Marvell BG4-CT Processor RAM: 2 GB Internal Memory: 16 GB 4K – UHD: Ultra HD, for 4 times better image quality DTS and Dolby sound with S/PDIF and HDMI audio output 128 GB TV recorder, to be completed with the media of your choice Connectivity: SD card reader / 2 USB 2.0 ports Wi-Fi Bluetooth

Which image are you using to boot?

Thanks for compiling that overlay in to a DTB - i've just tried putting that in to /boot/dtb/rockchip/rk3588-nanopc-t6.dtb, rebooted, and it successfully booted and used HS200 mode for the MMC! [ +0.015056] mmc0: SDHCI controller on fe2e0000.emmc [fe2e0000.emmc] using ADMA [ +0.006109] dwmmc_rockchip fe2c0000.mmc: IDMAC supports 32-bit address mode. [ +0.000031] dwmmc_rockchip fe2c0000.mmc: Using internal DMA controller. [ +0.000008] dwmmc_rockchip fe2c0000.mmc: Version ID is 270a [ +0.000023] dwmmc_rockchip fe2c0000.mmc: DW MMC controller at irq 95,32 bit host data width,256 deep fifo [ +0.000004] mmc0: new HS200 MMC card at address 0001 [ +0.000045] dwmmc_rockchip fe2c0000.mmc: Got CD GPIO [ +0.000236] mmcblk0: mmc0:0001 A3A444 230 GiB [ +0.002488] mmcblk0: p1 [ +0.000267] mmcblk0boot0: mmc0:0001 A3A444 4.00 MiB [ +0.000759] mmcblk0boot1: mmc0:0001 A3A444 4.00 MiB [ +0.000672] mmcblk0rpmb: mmc0:0001 A3A444 4.00 MiB, chardev (243:0) I'm puzzled as to why that worked, but the overlay didn't work. I would have grabbed some logs if I could, but there was no display output so I think the only output would have been on the UART? Unfortunately, I bought the version that comes in a case and the UART is on the top side of the board that I can't access. Searching around, it doesn't look like it is easy to pop it out of the case either. Just in case putting it in to user overlays was wrong, I tried reverting to the original DTB, putting the overlay in /boot/dtb-6.12.44-current-rockchip64/rockchip/overlay/rockchip-rk3588-nanopc-t6-emmc.dtbo, activating it via armbian-config, and rebooting. Unfortunately I hit the same issue as before where it wouldn't boot. Is there a way I can debug why the overlay isn't working without getting access to the UART header on the top of the board?

That's already a topic (with a solution): https://forum.armbian.com/topic/55129-trixie-apt-warning-policy-will-reject-signature-within-a-year/