MSP430F5529: BSL - Can't prevent mass erase on wrong password.

Hi,

Using BSL via USB for in field updates. We don't care about a password, it just adds too much complexity for the user across different firmware versions. I am using MSP430 USB Firmware Upgrade Example v.1.3.1.

I wish to disable "mass erase" on a wrong password as our device has calibration data that must not be erased.

Document slau319m section 2.7 details the BSL password options and states that if the memory address directly below the interrupt table is 0x0000 then the BSL will not force a mass erase on an incorrect password.

I have set the address 0xFF7E to 0 as 0xFF80 is the bottom of the interrupt vector table on MSP430F5529 according to slas590m section 6.3.

This is also confirmed in the .map output file.

.TI.bound:u16BSL_Password 
*          0    0000ff7e    00000002     
                  0000ff7e    00000002     msp430_bsl.obj (.TI.bound:u16BSL_Password)

Yet despite the password failing, mass erase is always performed.

How do I stop this from happening on MSP430F5529?

Thanks

Stomp!