MSP430FR2355: BSL , signature and mass erase

I am trying to get BSL to work with my MSP430FR2355. This is my scripter info:

---------------------------------------------------------
BSL Scripter 3.4.0.1

PC software for BSL programming
2018-Oct-12 08:58:08
---------------------------------------------------------
Input file script is : X:/Engineering/ProjectFolders/ProductConf

//
//Script example FRxx UART BSL
//
//Device : MSP430FR6989
//Comm Bridge: MSP-BSL Rocket
//
//Download blink application through
//UART BSL in FRAM device
//
LOG
MODE FRxx UART 9600 COM11
VERBOSE
        Verbose mode is now on!
//gives wrong password to do mass erase
RX_PASSWORD pass32_wrong.txt

...etc...

Here is my invocation simplified to the very minimum:

#include <msp430.h>


/**
 * main.c
 */
int main(void)
{
    WDTCTL = WDTPW | WDTHOLD;    // stop watchdog timer

    __disable_interrupt();
    ((void (*)() )0x1000)();
    return 0;
}

I am getting nothing back from the target.

I can trace the dissassembly to the spot in the code where it loops forever, but I cannot find any BSL source for the FR family of products, and I can't intuit what the code is getting hung up on. 

Any ideas?