Hello @milan021 ,
Thank you for your time and for contacting NXP support.
We recommend to download the SDK for the LPC product you are currently using, please find a link to our SDK downloader.
Once you have downloaded the SDK drag and drop the zip file into the installed SDK window on the MCUXpresso IDE(installed_sdk_img).
The second step could be or either create a new project or select one of the SDK examples we have available(example_sdk_img).
Please let me know if you have any other question where I can help you I will be happy to assist you.
SDK Select Development Board