LPC2148: dump_image file type

Hi all, i have an LPC2148 using openocd to interact with my device;

i type the command to backup my flash image:

dump_image my_image 0x00000000 0x0007d000

and i have a 500KB image of the flash.

now, i wish to know what type of file it is… il’s a binary file ? is a image file (like nero image or something ;))? how can i export this file in hex ?

i have to use some arm-toolchain to convert this image in hexadecimal ?

tnx in advice

dsk