Thread: GarminCure3 tool - the new way to create cure firmwares for Garmin devices

1) Execute (admin mode needed) GarminCure3 with previously downloaded Zumo firmware version 4.80 in my case as input file.
2) From within GarminCure3 select Cure and Make firmware button. New folder for your firmware will be created in same directory as GarminCure3.exe.
3) Click on Updater.exe button in Cure3 window.
4) New Updater window will apear where you will need to selct Connection Setting as usb. The USB pull down menu will be blank.
5) Turning to Zumo you will need to put it in pre-boot mode.
6) Remove battery cover and make sure Zumo is powered off.
7) Hold your finger on bottom left part of LCD screen and keep holding.
8) Connect the usb pc cable and hold power button down as Zumo boots up while still holding finger on LCD screen.
9) You only have a few seconds to react but as soon as you see your Zumo ID appear in puldown menu of updater, release finger from LCD screen, and
OK updater menu.
10)When you see the new progress bar appear, release your finger from power button. Your Zumo will be flashed with Cure3 firmware, which does not contain map loader.
12) Cure firmware will allow you to go into mass storage mode, which is where I deleted my corrupt gmapsupp.img file.
13) Pull usb cable out of pc and shutdown zumo.
14) Execute GarminCure3 once again with the same input file (firmware version 4.80 in my case) but this time select Original and click Make firmware.
15) Once you see rgn file in text box, click Updater.exe and follow exactly the same steps as above to flash to original firmware.

If all the steps are done, you should have a working Zumo again, and as for me, I am going to bed happy my Zumo is working once again.
Thank you all.

Credits to Polanski (On Another Forum)

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