You could use a tool like srec_cat to convert those files to binary (and back), but if you could do that you could probably load a regular hex editor, too. The design and usability of HexEd.it is ...

Let’s say you use an SD card-base portable audio recorder ... You can do it yourself with a hex editor, though, and it’s actually pretty easy. The software required for this feat of data ...

Also called a "binary editor," hex editors are used extensively in program ... THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.