Thread: SD Authentication

Hello. I've read many posts and still can't find something that would help me get an updated map to work on my GPS. The GPS I have came with the car I bought, factory installed, in dash (it is a Honda Navigation unit, which has DVD, radio, GPS, USB).
The Navigation software is Garmin, but it stores all of its map information, voices, vehicles, etc on an SD Card. (The SD Card contains the gmapbmap.img, gmapprom.img, Gmapprom.unl & gmaptz.img files in the Garmin folder, it also contzaind more files in that folder as well as several other folders like Fonts, Help, Voices, Vehicle, POI, etc) See attachment for a list of all files in the SD Card.
Since I was trying to get an updated map but didn't want to mess up the SD card, I made a RAW copy of it into another SD Card, but when I put that copy into the unit, I get a cannot read map data, check SD card message. So I guess the map is locked to the SD Card.
I then deleted the gmapprom.img & Gmapprom.unl files from the SD Copy and copied an UNLOCKED gmapprom.img file instead. When I put it into the unit I get a screen titled SD Authentication with an input box that reads "Please input the password." and I get a keyboard with the a-z & 0-9 keys. I'm able to enter up to 16 characters (The keyboard doesn't allow symbols nor spaces).
How can I get that SD card password? I tried running the Hardware_IDExtractor tool on the copy SD, but it won't show anything under "Real Hard drive ID (hardware)". Although I don't think that would help much, as that would be the ID, not the password :/
The facts are:
- All the garmin information from the unit is stored in the factory SD Card
- A RAW copy of it doesn't work, without modifyng its contents, I get a cannot read map data message
- If I add an unlocked map to the RAW copy, naming it gmapsupp.img, I get a cannot read map data message
- If I delete the gmapprom img & unl files from the raw copy and copy an unlocked map with filename gmapprom.img, I'm asked for the SD password.
I would really appreciate any help; I've been reading full posts for the last couple of weeks and can't find a way to make the unit to accept a new SD Card & unlocked map.