The ST10 flasher is a free tool which is available for all I/O Terminal tool users.
It allows reading and writing access to the ECU memory via bootstrap loader
C167/ST10 Internal/External memories. User defined reading address/size.
C167/ST10 External memories 29F200/29F400/29F800 – Read/Write
ST10F168 – Read/Write
ST10F269 – Read/Write
ST10F275 – Read/Write
ST10F280 – Read/Write
ST10F296 – Read/Write