Palm Database ImageViewer
From Just Solve the File Format Problem
Overview
Palm Database ImageViewer format is a type of PalmOS Database file. It contains a bitmap image. It is associated with the Image Viewer III and FireViewer applications, and is sometimes known as FireViewer format.
It appears to be a paletted format supporting up to 16 colors. Images may be uncompressed, or use RLE compression.
Identification
ASCII characters vIMGView
appear at byte position 60.