GARMIN GPSMAP 62 ISSUES
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If you´ve bricked your GPSMAP 62 there will be a good chance to recover it. 
 

A. Forced USB Mass Storage Mode
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If your GPSMAP 62 is freezing or crashing during startup, it is commonly a recently added map, image, gpx or other file that is creating the issue.
This procedure forces your GPSMAP 62 into USB Mass Storage Mode so that you can delete, remove or rename any recently added files:

- Power the GPSMAP 62 off (press and hold power button ~10 seconds to force power down if necessary)
- Remove the batteries from your GPSMAP 62
- Connect the GPSMAP 62 to your computer with a USB cable
- Immediately press and hold the D-PAD (Up) button
- If necessary, cycle the (Power) button to initiate a power on sequence
- Release the D-PAD (Up) button after the USB symbol is displayed on the screen

The GPSMAP 62 will enter Forced USB Mass Storage Mode
- Remove or rename any recently added maps, images, gpx or other files that may be causing the issue
- Disconnect the GPSMAP 62 from the USB cable
- Install previously removed batteries
- Power the GPSMAP 62 on
- Repeat all steps as needed until the GPSMAP 62 boots properly


NB: ALWAYS USE A MEMORY-CARD TO STORE MAPS. IF SOMETHING GOES WRONG WITH A MAP, YOU JUST HAVE TO REMOVE THE CARD AND THE GPSMAP 
BOOTS WITHOUT ERRORS.  



B. Forced RGN Firmware Installation
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This procedure (Windows only at this time) will force a low level installation of the GPSMAP 62 firmware
After completing this procedure the GPSMAP 62 will be running the firmware version provided by the RGN file
Warning: Flashing firmware to a device other than that for which it is designed will render the device permanently inoperable


B.1 Preparation

- Create a new empty directory on your computer desktop and name it 'RGN'
- Download RGN_Tool.exe to the \RGN\ directory you created
- Download Updater.exe to the \RGN\ directory you created


B.2 Extract RGN from GCD

- Copy the desired GCD file from the Firmware page to the \RGN\ directory you created
- Extract the GCD file from the downloaded .zip file
- Delete the .zip file
- Rename the GCD file to gupdate.gcd
- Drag the gupdate.gcd file to RGN_Tool.exe
- Verify the HWID displayed in the RGN_Tool window matches your GPSr HWID
  GPSMAP 62, 62s, 62st HWID = 1113
  GPSMAP 62sc, 62stc HWID = 1340
- In the RGN_Tool window, select 'File > Save to RGN' and save as gupdate.rgn in the \RGN\ directory you created
- Delete the gupdate.gcd file from the \RGN\ directory you created
- Close the RGN_Tool


B.3 Verify Progress

The \RGN\ directory should now contain these files:

RGN_Tool.exe
Updater.exe
gupdate.rgn


B.4 Flash RGN

All steps must be completed before the GPSr enters Forced USB Mass Storage Mode.
If this happens, restart the Flash RGN process.

- Disconnect all GPSr from your computer
- Drag the gupdate.rgn file to Updater.exe
- After the Updater window appears, select the 'USB Device:' radio button
- Power the GPSMAP 62 off (press and hold power button ~10 seconds to force power down if necessary)
- Connect the GPSMAP 62 to your computer with a USB cable
- Immediately press and hold the D-PAD (Up) button
- When your GPSMAP 62 appears in the 'USB Device:' window, select 'OK'
- Continue holding the D-PAD (Up) button
- When the GPSMAP 62 displays "Software Loading", release the D-PAD (Up) button
- The Updater will display a download progress bar
- When the flash is complete, the updater will display a 'Successful Update' message
- The GPSMAP 62 will restart with the new firmware version installed




