pepar

No. You don't need to build an image. You modify the DTB by editing the files on the micro-SD file system (you need to mount it/work as root from another linux system). But it should be the last option you try since you are "kind of new to this ...". Don't worry about the "Failed to start console-setup...." it mostly affects the way the console "looks" on your HDMI monitor. The USB enumeration is more of a problem. It suggests that your port/cable is not working properly. Since you are "new" at this, may I suggest a few things: 1. power the board using the "DC_IN" micro-USB port with a good USB supply/cable 5V/2A. 2. use the "OTG" port with your OTG cable and USB keyboard only (important). 3. use KISS: flash and boot the simplest images (no desktop, I like debian, ...) 4. test the keyboard (ONLY device attached to the OTG cable, no hub/mouse/... ). IF it does not work, try a different OTG cable with the same keyboard and without rebooting. 5. if it still does not work for you then flash an Armbian "current" image (maybe Armbian_23.8.1_Bananapim2zero_bookworm_current_6.1.47_minimal.img.xz), then edit /etc/modules and comment the "g_serial" line (as root, on the micro-SD card, put '#' as the FIRST character on the line) and repeat the previous steps. As I mentioned earlier, be VERY methodical (work on one issue at a a time), it will work. By the way, how are you reading the boot log messages? USB serial/UART cable or mini HDMI to monitor cable? P.S. If your networking skills are good AND you have a USB-Ethernet adapter, you can use it instead of the keyboard and check your router for the IP lease issued to the USB-Ethernet MAC address, then you can SSH into the BPi-M2-Zero using that IP ... ie. once you get the micro-USB host mode enabled/restored, a lot of USB devices will "just work". Hope that helps. Keep tinkering.

In case anyone stumbles upon this thread, check this one https://forum.armbian.com/topic/30140-banana-pi-m2-zero-otg-port-not-working-with-keyboard/ for answers. The RJ45 Ethernet connector needs to be manually added/soldered onto the board and then follow previous post's instructions ... OR just use a USB Ethernet adapter (AFTER reading the thread in the link above to re-enable USB host mode). Hope this helps. Keep tinkering

In case anyone stumbles upon this thread, check this one https://forum.armbian.com/topic/30140-banana-pi-m2-zero-otg-port-not-working-with-keyboard/ for answers. Hope this helps. Keep tinkering

@Werner Thanks for clarifying the issue. While trying to figure out what the problems/posting rules were, I did not find any clear answers. Maybe the rules (or a link to them) should be included in the validation email <= just an idea.

Answers to your questions below the addendum. As an addendum to my previous comment (seems that I am not ALLOWED to edit it???), a third option to re-enable micro-USB host exists: OR as mentioned by Tomash here, you can modify the Device Tree Blob by editing/recompiling the .dts file (the main advantage being, it should withstand/survive updates better) Yes, images listed under that heading have USB host mode enabled (amongst other features). Not necessarily. First, depending on your level of comfort with SBCs/BPi-M2-Zero/linux cli, pick your method to address the USB host mode (flashing an aforementioned image being the "easiest") and then boot your BPi-M2-Zero. Now try with your supplied OTG cable => keyboard should work. If not, without rebooting, try a different OTG cable. Be methodical, one known issue at a time ... Hope that helps. Keep tinkering.

The correct answer(s) (harder and harder to stumble upon these days) documented here: Banana Pi forums: BPI-M2-Zero Can’t get keyboard to work Quick synopsis for posterity: 1. Armbian disables micro-USB host mode since 5.17 => as mentioned by Erik, use images under the heading "... support emmc, usb wifi, emac" OR as mentioned by August, if you know how to edit /etc/modules (on the flashed micro-SD card as root), comment out g_serial 2. as mentioned by Mickey, BPi-M2-Zero OTG port does not work with ALL OTG cables (ask me how I know!! <= wasted hours ...) Hope that helps. Keep tinkering.