Struggling with installation on the DF Robot IoT Router Carrier Board

[widert]

Hello, I have a IoT Router Carrier Board that I'm not able to connect to. This is what I've done so far:
Connected the RPi CM 4 with the IoT Router board. The RPi CM I'm using has 1GB RAM (eMMC) and 16GB Flash.

Flipped over the switch on the IoT Router board.

Connected a Usb A to my Ubuntu running PC.

Installed rpiboot on my server, started it up and verified that the IoT was connected through sdc.

Downloaded the (special) image and wrote it to sdc:

sudo dd if=openwrt-21.02.3-bcm27xx-bcm2711-rpi-4-ext4-factory.img of=/dev/sdc bs=4MiB

Verified that the disk was ok:

sudo fdisk -l

Device     Boot  Start     End Sectors  Size Id Type
/dev/sdc1  *      8192  139263  131072   64M  c W95 FAT32 (LBA)
/dev/sdc2       147456 2113535 1966080  960M 83 Linux

Resized the sdc2 partition using the method stated on the DF Robot webiste, checked again:

Device     Boot  Start      End  Sectors  Size Id Type
/dev/sdc1  *      8192   139263   131072   64M  c W95 FAT32 (LBA)
/dev/sdc2       147456 30535679 30388224 14.5G 83 Linux

Flipped over the switch again and rebooted. Connected a PC through the ETH1 port, but no connection at 192.168.1.1?

Any suggestions on why it isn't working. Any ways I can do error checking? Will e.g a USB-C to HDMI cable give me screen output from the IOT Router board?

Thanks and regards,
Tom

[slh]

I would assume eth0 to be LAN (and eth1 WAN), but check bother nevertheless, as the enumeration order might be different from their labelling.

The easiest approach would probably connecting a (USB2)serial adapter and checking what's happening, but with RPi device, connecting screen and keyboard might also work.

[widert]

Seems like it was something wrong with the OpenWrt image provided by DFRobot, sorted now by changing some of the boot files