I think it would be really cool to have a battery powered ESP8266 that could write to the flash of an MSP430 via the UART BSL. There are 2 free GPIO on the ESP8266 that could toggle the RST and TST lines as well as the normal RX/TX. In operation, one could upload a small file to the ESP8266 via web interface and initiate the transfer via a button on the same. Also once could read/write the information segments as well.
Is there any existing project like this or any interest in the community for it?