Serial bootloader for TMS320F28377S

I want to update firm ware of TMS320F28377S using GSM modem by UART of microcontoller. I am able to update firmware using serial boot loader provided by TI. But when we try to update firmware remotely then there are chance of data corruption so I want that , microcontroller its self diagnose the program faliour and jump to bank 1 which contain a backup. I have no experience of writing boot loader so please giude how I can do this?