Quote Originally Posted by jeff8643 View Post
我下载了type9（想用于Nuvi200）， oregon450，以及 Venus 2013.30 Detailed Map with content of old QSI+ISM， 为什么三份文件的地图文件都是一样大小的？

I downloaded type9 (think for Nuvi200), oregon 450, and Venus 2013.30 Detailed Map with content of old QSI + ISM, why the three documents are the same map file size?
As shown in the table of post #5, there are only 4 different kinds of detailed maps. Both type9.zip and 83803.zip (for Oregon 450) contain the same detailed map with QSI+ISM, hence the same size and content. The Venus version of detailed map with QSI+ISM is derived from the official QSI+ISM version, hence also the same size, but different content as the shifted coordinates have been corrected.