I've been playing with a device similar to this one: EPC3208G. I've connected GND, TX and what i think is an RX pins via ttl adapter. Using minicom, 8N1 and baudrate of 115200, I managed to get some output after the device powers up. But, much like in the linked article on openwrt wiki, the serial console output just stops after some time. It stops on the same character every time, although not the same as in the article.
I was wondering what could be the reason for this behaviour?