its like this -
1. if its files of the type u just talked bout (flash_installer...), where u do not see any file extension at the end, then u can just execute them by typing "./file_name" in the same directory as the file is in.
2. if u see files of the type xxx.bin or some else , then most probably u might have to change its file type to executable which u will do by typing (in the terminal, in the directory where the file is):
chmod a+x file_name
the above command will make that file executable.
and then u do the same as earlier - "./file_name"
since ur on rh, u might wanna look at stuff here as reference: