Thread: Garmin GB Discoverer 1:50K - Full Coverage (2.00)

Interestingly I also had a lot of problems unlocking this map. When I used the JetMouse on a Win7 (secured by Kaspersky) each calculated key failed. The same JetMouse program which has been transferred earlier from a XP PC to the Win7 PC using an USB memory stick produced correct keys on the XP PC itself.
After doing a file compare there was a mismatch by just one single byte in the exe file, no idea why this could have happened.

However, checking the resulting code by the KeyChecker is a brilliant time saving idea!

OK follow up to my previous post. I have been unsuccessful in all ways to read my SD card ID's via PC/laptop. However using Catymag's info on my NUVI 1490T I have been able to find the serial of my two cards, and using this in JetMouse I unlocked both cards for GB Discoverer without any hassle, and can see OS1:50,000 maps in both my 62S and 550T. The cards are interchangeable between the two units without issue.
I'll add my thanks now I'm here :-)
Ocicat

Why do you need the serial of your SD card? I thought the only things needed were GPS Unit ID and MAPid. Or am I missing something?

@redcap_be

Unlocking with a Unit ID will only unlock the map for the specific GPS unit. If the map resides on a memory card and it's unlocked using Card ID (CID) you can put the card in any Garmin unit and it will be unlocked also in all the other units. That's what ocicat meant with "The cards are interchangeable between the two units without issue".

Arrrrrggghhhh - This map has now become a challenge. Nothing I have tried yields a working copy on my GPSMAPP 62s.

Tried: Jetmouse Keygen (checksum fixed) using map ID 2043 & unit ID to generate gmapsupp.unl (many times) with same result "cannot unlock map"
Tried: fast IMG unlocker and it gets to 69 and stops like previous posters experience
Tried: GarminUnlocker - no joy
Tried: Unlocking map for mapsource (successful - whoopee) but then still the same "cannot unlock map" error after transfer to device

As soon as I can find a PC with >3GB RAM I'll try the "Fast IMG Unlocker v.1.3 update 5-10-2010"

If anyone has had any success with GPSMAP 62s and this map I sure would like to hear about it

Cheers, Sim

I have a 550T for which I bought GB Discoverer 1:50K ........... and then got another 550 (non T) ... (we both geocache) .. copied the GMAPSUPP.IMG to a new 4G Miscro SDHC and built a new GMAPSUPP.UNL for second GPS using unit ID and Garmin_kgen_1.5+Fix.exe worked perfectly .. thanks

Hi Ocicat,

Didn't spot you had a 62s even though I've read this thread over and over - D'oh

Sure would appreciate the help in generating a valid unlock code to put in my gmapsupp.unl file as none of mine work.

Here is the typical output from the 25 digit code checker - InfoUC_x32_v2.10.exe....

---------------------------------------------
UNLOCK KEY : #####-#####-#####-#####-##### - removed in case it contravenes something!!!
---------------------------------------------
KEY IS VALID: YES

Unit ID : ########## - removed in case Garmin frequent these forums
Family ID : 803
Product ID : 1
Region ID : 0
Vendor ID : 0
Date expire : never
Product name: Garmin Mobile XT
---------------------------------------------

As soon as my post count is 5 i'll PM you my unit number

Cheers, Sim

@simspos

The key you have generated are the one for "SW.UNL" in Garmin Mobil XT. That key is only to unlock GMXT in a mobile phone, nothing to do with a Garmin GPS unit. This field will always be fixed to MapID 803 and either PID 1 for Garmin Mobile XT or PID 3 for Garmin Mobile PC.

Use the second field at the bottom in the keygen and the generate button there. That's there you get the code for the "Select Map Product" and your MapID, PID, RgnID & VenID parameters.