I've previously used GIR_Editor in everything from XP to 10 and now 11 presently, no problem with it in any 64-bit OS.

The BIN file dump from a 2597's region 16 should be exactly 3 MiB (3,145,728 bytes) in size. Please supply a copy of your logo_2597.bin for comparison and advise its source (i.e., whether dumped from your own device, or from where it was downloaded).