I think I broke my N2 by wrongly connecting my USB-UART adapter (not from odroid) to the UART port.
To avoid to connect my brand new N2 to the HDMI monitor I used a USB-UART adapter I had lying around. I found the pinout of the connector and connected GND,RX and TX, in the mean time I flashed armbian to the SD CARD. I plug the SD Card and powered on the board and it worked as expected, on the serial console I saw all the kernel messages but I couldn't write the username for the login.
So my brilliant mind thought "Well of course it didn't work, I didn't connect the VCC, let's do it", and I connected it. Worst decision of the day.
At first it didn't happen anything, later I rebooted the board and the issues started.
The PWR LED is completely off while the PSU is powered and connected, the ALIVE LED is always off, on the serial console no more messages only something like this "hw id:G12B:BL:6e7c85:7898ac;FEAT:E0F83180:2000;POC:F;RCY:0;EMMC:800;NAND:81;SD?:0;SD:400;USB:8;LOOP:1;EMMC:800;NAND:81;SD?:0;SD:400;USB:8;G12B:BL:6e7c85:7898ac;FEAT:E0F83180:2000;POC:F;RCY:0;EMMC:800;NAND:81;" .
I turned the switch to SPI, just to try, and only the ALIVE led blink, the power LED is still dead.
I finally connect the board to a monitor and when the switch is on MMC it doesn't show anything on the screen but when set on SPI I can see the petitboot menu but I can't interact with it using the keyboard ( Should it work like that right?).
So where is the mistake? Well, there was a reason why I didn't connect the VCC at first, I checked my adapter and the VCC is connected to 5V, so i think i fried the board .
tl;dr I connected the VCC of the UART port to 5V and I fried the board
I have some questions for you:
- Do you think the problem I see could be caused by my error?
- Could I recover it in some way?
Board: ODROID-N2 4G
PSU: 12V 1.5A
Thank you for any help you can give me.
PS. This is my first post here, I'm sorry if I broke some rules