SDKManager "OS image ready" but nothing gets installed

Dear @SivaRamaKrishnaNV,
I could not execute stty -F /dev/ttyUSB1 115200, I had to use sudo
I could not execute the following echo commands, I had to use sudo su
(sudo alone did not work)

After successfully executing these commands I have tried to flash, and it worked.
Thank you for finding a workaround.

So, I will try to upgrade the p2379 as well. Which commands do I have to execute for flashing p2379?
Thank you.