In case this might be of use to someone: I posted a new Github repo today on a new SD card bootloader for certain MSP430 parts. The bootloader takes up 1K of memory at the beginning of Main, and needs four pins to communicate via SPI with the SD or microSD card. This would replace all of the Scripter/Rocket/MSP-FET/Launchpad drama associated with firmware updates by an ultimate user in the field.
https://github.com/gbhug5a/SD-Card-Bootloader-for-MSP430
Included are bootloaders for the G2452 (USI) and G2553 (USCI-B), both written in assembler. In addition, there's a Windows program with C code which converts an Intel-HEX or TI-TXT file into the binary file needed by the bootloader.. Includes source and executables for everything.
At some point I may make a version for an FR part. That should be very close to the G2553 version, but would need no erasing.
