Thread: Nuvi 1690 turns off when selecting "System"

Originally Posted by mallard2

regionfileonly GCD
GCDfileonly.GCD
Boot.bin

Anywhere I can read up on the above ??
Regards

The region file is meant to be used in conjunction with WebUpdater which downloads this file directly from Garmin and transfers the file to the nuvi. You can also download the region file (if you get the link from Update page source) and drag it to WebUpdater. Both methods will do the same thing and copy the region file to the nuvi as GUPDATE.GCD. After a power cycle, the nuvi will be updated to the version contained in GUPDATE.GCD.

Basically GCDfileonly.GCD is the same as the above regionfileonly GCD, see:

Code:

Please Login or Register to see the links

This name is used for Asian firmware to distinguish it from other kind of updates using .exe files and which don't need Webupdater, but just nuvi connected USB.

GCD file contains 3 sections:
1 - boot.bin (It makes start your nuvi)
2 - logo.bin (Logo at splash screen=region 16)
3 - fw_all.bin.
You can disassemble *.GCD with turbooccc RGNTool ,look at what's inside and extract parts.

Lol Neil was faster