Your supplied project named UART_Bootloader_Host is missing the BootLoader component, so that will not work. I concentrated on the UART_Bootloader project which is written for a PSoC3 which I do not have.
I viewed at the definitions, found a bug in the Bootloadable2 and removed it from project.
One issue still remains: you connected Rx and Tx of the Bootloader to Port 0 Pins 0 and 1. what is the connection from those pins to your PC? You will probably need a level-shifter (like MAX232) to convert the 0..5V to +-12V for the serial interface connected to your PC. The MiniProg3 does not support an USB-UART bridge.
A way out could be to use an USB-UART component of the PSoC3 as the bootloader interface. This will appear on the PC as an emulated com-port and will be accessable by the Bootloader Host program on the PC.
Bob
