In example programs. Just open Psoc Creator and select open example programs. Tell it your kit part number and you will find the program To Regenerate the bootloader.hex and .elf
spend 2 days to figure it out :( ... its is in the "Start Page " Tab ... Nowhere in the menu ..
In General this tab is used for help files ,start up tips , recently opened project .. Never thought the link will be here ...
Actual Folder is C:\Program Files\Cypress\CY8CKIT-049-42xx\1.0\Firmware\SCB_Bootloader
That also misled me ... hope this helps someone ...