Hello ,
Please test as below:
- Pressing ISP button on your board, and connect USB with P6, then release ISP button.
- Open Flash Magic tool, refer to the below link to test whether it can work well.
https://community.nxp.com/t5/LPC-Microcontrollers-Knowledge/Flash-Magic-Programing-LPC/ta-p/1152763
Only need check the part of "1.1 UART ISP Mode Demonstration" .
And you'd better take a video or screenshot show me the steps and result, includes when debug.
BR
Alice
Hello B. Vishnu,
Sorry we do not support call.
You can create a private case if need, https://support.nxp.com/s/
While I think the chip broken, if it can't enter isp mode.
BR
Alice
I don't have any experience using these boards but i went through the schematics and was able to see that vdd_target is high but the led isn't blinking. Therefore, the line connected to the MCU is open because somehow the configurations of MCU are corrupted and i want to check the conf files which i am unable to. Alice, can u please help me figure out what could be wrong? 
No I mistakenly tried to write to the bootloader using Mcubootloader utility. After that the led connected to the isp isn’t working. One pin to this led is from the mcu and I believe it became open after my write. Yes , I am unable to enter the ISP mode. I want to go back to the default configurations and am unable to do so.