Morning.
COM4 and COM3 were tried, 9600 Baud. It was not always that PUTTY can access the CORE2 after successful booting, which was given by the green blinks. Every boot, it blinks but it was not every time that I could access CORE2 via PUTTY. By the way, PUTTY was active, but no access to CORE2. Tried also eMMC boot, the official ROMs (Debian NAS as tried as well), it did give scuccessful access just 2-3 times of 20 successful booting.
Armbian, I tried several times. Armbian shut down the red LED but only the green blinks indicates successful booting. All the time, there were successful booting, but no success to get access via PUTTY.
Desperate to this CORE2, bad support from NANOPI. Document from the web is kind of unclear in my case.
1. Could SD card problem? I doubt so. I formated it with FAT32 every burning
2. Could power supply problem? I tried 2 supplies 5V2A.
3. Could router problem? Could router rejects LAN connections, NB my router is 192.168.10.1 given by Altibox. The router does offer DHCP, I have a NAS that works fine.
4. Could img too new without careful testing?