fat-squashfs & backup-loader

[jenom]

my router model ) has 4 gargoyle files listed
what are backup-loader and fat-squashfs files good for ?
thanks

[jenom]

nobody knows ?

[Lantis]

30 seconds on google revealed this:

Fat images

Since Attitude Adjustment beta 2, some images are suffixed with "-fat" to indicate they will be able to use more flash that the factory firmware uses by default. It does this by moving the wireless interface calibration data at the end of the flash. This is a dangerous operation and should only be performed if you know how to back this flash partition (/dev/mtd5). To upgrade, you'll need to copy the whole image in /tmp and use sysupgrade -i the caldata question. Downgrading to a non-fat image will get the caldata back in place so it can be used by the factory firmware, after upgrading to a fat image, you must downgrade before getting back to a factory image.

I believe the backup-loader is the same as the normal file but accepted under certain circumstances by default dlink firmware name checking.

Essentially, I'd avoid both of those images.