Quote Originally Posted by alanuae View Post
It seems my reply last night went missing.
Probably you tried to post at the same time the previous posts were being moved here from the other thread.

Regarding what I did previously, I had updated my lifetime maps on my 3597 which had previously been patched.
How was it 'patched' any why? 3597's firmware doesn't have MSV presently so there's no need to patch with the [Only registered and activated users can see links. ]. It can simply use maps unlocked with latest gimgunlock.

I bought it second hand. I had a second map installed on a micro sd card. After updating I couldn't see the map on the sd card. That's when I tried to patch the GPS to accept the map. I flashed a GCD file from the Garmin Cure3. After that it doesn't boot now. Only goes to the blue Garmin logo then switches off after a few seconds. I can see the files on the GPS and SD card in Windows Explorer. Any suggestions please?

I removed the file GUPDATE.GCD as suggested but no difference.
Don't put the GCD file back, it's not needed anyway. Maybe the map on the card is faulty. Remove the microSD card if it's still in the device, then flash the device with ORIGINAL (not patched and not cured) V5.50 firmware as an RGN in preboot and see if it boots. If it boots properly, turn it off and put the card back in to test.

Report back and don't worry as we have plenty more to try in steps if that doesn't work. Don't forget to tell us in full detail what you did first before this happened.