Hello i have sadly flashed the Openwrt image in the second partition, but it has to be in the first partition.
Now its not booting and i get no IP.
Is there a way to reset it to choose the other image with original firmware.
But hold a second before buying anything - The initramfs image, which is the one you're supposed to flash from OEM, should boot from the second partition. How exactly did you install OpenWrt and what did you try to connect to it?
Note that LED configuration might be wrong, so don't put too much into a dark LED.
You power the switch as usual and connect only TX, RX and GND to the adapter. The adapter is powered by USB.
Yes, looks fine. A bit expensive maybe, but we can hope it's not a fake... Make sure you set the adapter for 3.3V. That's the IO pin voltage - You should not connect Vcc as already mentioned.
I have seen that openwrt is flashed successfully but the ip is on other subnet, now i can connect via 192.168.1.1 to luci and ssh is working. Still need to flash the sysupdate image.
I have flashed via original firmware web ui.
Even better. The serial console header is fortunately easily accessible on these devices (just 3 standard Philips head screws and the populated header is marked and ready), with serial console access, these devices are pretty resilient.