Pardon me, as I might have to ask some very basic questions, as I never dealt with these things on that level.
An easier option to try is to mount the MicroSD card in your computer. You should see a bunch of
.dtbfiles
I suppose the card in question is the one I burned the nerves firmware to. In my case, it would be the internal eMMC of the CM5, accessed via usbboot.
But there I can only see a single *.dtb file, not “a bunch” as mentioned above.
inode Permissions Links Size Blocksize User Group Date Modified Name
36300 drwx------ 1 - - dw staff 5 Jan 12:47 .fseventsd
36024 .rwx------ 1 78Ki 79Ki dw staff 1 Jan 1980 bcm2712-rpi-5-b.dtb
5898 .rwx------ 1 486 512 dw staff 1 Jan 1980 cmdline.txt
5894 .rwx------ 1 1.8Ki 2.0Ki dw staff 1 Jan 1980 config.txt
4 .rwx------ 1 8.3Ki 8.5Ki dw staff 1 Jan 1980 fixup4.dat
5899 .rwx------ 1 15Mi 15Mi dw staff 1 Jan 1980 kernel8.img
3 drwx------ 1 - - dw staff 1 Jan 1980 overlays
21 .rwx------ 1 2.9Mi 2.9Mi dw staff 1 Jan 1980 start4.elf
Nonetheless, just copying the mentioned bcm2712-rpi-cm5*.dtb files to that eMMC location and boot with these files does not change anything. No output anywhere. Feeling a bit dumb right now, but someone has to start somewhere.


















