Hello SaiPrasadAB_1919,
The flash bootloader can communicate using the OpenSDA/UART or USB-HDI interfaces. The tools available are available for use with the flash loader are available on the link below (please note that you may need to login to download this file).
https://www.nxp.com/webapp/Download?colCode=FLASHLOADER-RT106x-1-GA&appType=license
Inside you will find documentation on the different tools on the doc folder. The tools themselves are located on the Tools folder. The Manufacturing Tool (mfgtools-rel) would be the tool that provides a GUI in case you are interested in this feature.
For more information on how to use the flash loader please see Application Note 12238 (link below)
https://www.nxp.com/docs/en/nxp/application-notes/AN12238.pdf
I hope that this information helps.
Regards,
Gustavo