Hi @Shivani_Elavena ,
Thank you so much for your interest in our products and for using our community.
First , I see you set SW1 : 0001 , it is right mode(Serial Downloader mode).
Second, The Serial boot provides a means to download a boot image to the chip and execute the
image over the following serial peripherals:
• LPUART
• USB-HID

If you want use USB serial peripheral, Please connect J20.
If you want use UART serial peripheral, Please connect J86.
Wish it helps you.
If you still have question about it, please kindly let me know.
Wish you a nice day!
Best Regards
MayLiu