Thread: Firmware downgrade for 721xs to recognize custom maps

I have installed GCCMaps0.0.3 (from the link above in boote-forum) and Visual Basic 6 Runtime Files (from sourceforge)
I copy the .img that show "map format not admitted" in gccmaps directory.
I drop the *.img file over the gccmaps program and it says "File patched correctly" in some .img and

I07246EF: No need to patch the tile
I07246FA: No need to patch the tile

in another .img

The .img is in the same directory of the GCCMaps, i pick it and drop over the GCCMaps.exe and the messages appear but no change in file, modified date of file, like if nothing would have been doone to the .img

I copy the .img to sd and put it in 721 software firmware version 6.80, not 6.50 not 4.2. This is the last one that blocks returnning to old firmwares and maybe blocks gccmaps too.
Message "map format not admitted" appears again


What am i doing wrong?

It is correct i pick the file in the gccmaps directory as it were "modified" or should i pick it from other place?

May be that version 6.80 introduces new system to block the possibility to patch .img´s?