How to patch unlock garmin img

Bloggeridge · 31st August 2010, 07:45 PM

These unlockers don't seem to work with GB Discoverer Full. One file is a Gig in size and the programs seem hang. So far I've not found a solution that I can make any sense of... There are rumblings I saw in a thread somewhere about a bug that is now fixed in Jetmouse V1.5, but I haven't figgured out how to use it with my map. All ideas and pointers welcome cos I'm pulling my hair out with this bloody Garmin product and feel it's more of a £400 paper weight at the mo!

**roderickhowie** · 2nd September 2010, 02:39 PM

Agreed - the img unlockers do fail on the largest file of the GB Discoverer Full file. You can get it to work (I did) by copying the locked img file directly to your SD card and by then adding an UNL file to the SD card too. You need the patched JM keygen as outlined in post 10 of the Garmin GB Discoverer 1:50K - Full Coverage (2.00) topic (sorry I don't have enough posts to post links..yet)

OlafVonZen · 28th September 2010, 05:26 PM

Used it on Astro. Working perfect. Thanx

oline57 · 4th November 2010, 01:04 AM

Originally Posted by OlafVonZen

Used it on Astro. Working perfect. Thanx

How did you get it to work on the Astro? I tried the steps in the OP but was not able to get it to work. Says can't unlock maps when it starts up. Anybody have any suggestions?

**catymag** · 2nd September 2010, 11:53 PM

all the tools are here
[Only registered and activated users can see links. ]

micked · 5th September 2010, 08:39 PM

small uppdate to the script to work with europa 2011.20

md c:\s
gmt.exe -s -o c:\s\ c:\gmapsupp.img
del /q c:\s\*.mps c:\s\*.unl
GarminUnlocker.exe imgset c:\s\
del c:\s\*.MD2
gmt.exe -j -o c:\gmapsupp.img -m "Garmin Unlocked" -f 555,1 c:\s\*.*
del /q c:\s\*.*
rmdir /q c:\s

Download: [Only registered and activated users can see links. ]

shanedillon · 7th September 2010, 05:01 AM

How do I add an Expire Date to the Unlock script? I need the img file to become locked at a certain date in the future so it can longer be used. My understanding is that I need to create an img file with a lock on it and then use an unlock file that will expire......thus re-locking the img file.

micked · 7th September 2010, 08:19 PM

you cant.
the best you can do is to get the device to promt that you have old maps and have to uppgrade, but after you hit ok the device will function as normaly.
this "old maps promp" is nothing that can be done with the script, its in the firmare of the gps.

shanedillon · 7th September 2010, 11:37 PM

I've read about a utility called cGPSmapperKey.exe that you can use to generate unlock files inwhich you can assign an expire date. Has anyone used this utility? See below..

"To generate unlock key for these maps using cGPSmapperKey the following information needs to be provided:

FID
ProductCode
RegionID
GPSID
Expiration date (if exist)"

**Tigertrader** · 17th September 2010, 02:17 PM

I have spent hours and hours searching for a tool to unlock locked .img files. There is tons of rubbish out there, but this method is brilliant and works as advertised! Thanks a million for your generosity in sharing this.
As an aside, I purchased 4 second hand maps from secondhandgpsmaps.com despite being very suspicious about them. It seems my suspicions were warranted as they only delivered two of the four maps I paid for. The maps are all locked. They have not responded to my email enquiries about the missing maps or given me an indication on how to unlock the maps. So beware!
But your method here has solved the problem nicely. Thanks again.

Thread: How to patch unlock garmin img

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