Colibri iMX6ULL on Colibri Eval Board - UARTB Loppback not working

Hi,y error message. Is thstrong textere anything missing in this guide?
I used the following link Basic UART usage - Colibri Evaluation Board - Colibri iMX6ULL
I used every step as mentioned till step 5. But no message appears on terminal. I don’t get any error message too. Is there anything missing?
Thanks for your help,

Got it working. Jumper 16 on the Eval Board has to be shorted so that the RS232 line driver/receiver is in FORCED_OFF state. It is working now. I think the Basic UART usage has to be updated.