I have purchased a Sony camera in Japan, and it does not allow me to change the base interface language. I believe I can use the English firmware to flash the camera and change it to English, but when I try with the most recent version, it quits before updating because it is technically the same version as the installed firmware.
I would like to see if it is possible to reverse engineer the firmware, and remove the command that causes it to quit if it finds the same version already installed. The firmware also needs to be able to proceed with the English version of the installation, even if it finds Japanese already installed.
The original firmware can be downloaded from here: https://esupport.sony.com/US/p/swu-download.pl?mdl=DSCRX100&upd_id=10230&os_group_id=6
The project will be considered successful if I am able to load the English firmware onto my camera.