@sledjunk
14xx has two HWIDs. Be certain that you're using the correct firmware and it's properly named "XXXX01000xxx.RGN" where XXXX is the 4 numeral HWID (either 0972 or 1104 for 14xx devices) and xxx is the software version (it seems you're using V5.90, the latest is V6.30). Find your HWID using G7ToWin or look at GarminDevice.xml in a backup if you have one: [Only registered and activated users can see links. ]

The difference between the two types of curing is that Quickcure doesn't involve the firmware in any way whereas the traditional method used by Cure3 does. The last message screen by Updater.exe means that region 14 where the main firmware is stored has not been able to be flashed which is concerning when combined with the fact that when flashed using Quickcure the device isn't seen in Disk Management. No drive letter allocated is not so unusual however not even being recognized in Disk Management is a worry. My advice would be to keep trying to flash cure3 derived fw, sometimes the flash will finally be accepted.

At worst this device may have physical damage to its flash memory. At best it's just stubbornly bricked. If persevering with the flashing of Cure3 doesn't pay off then please advice the background, how it became bricked (like after software or map update) and what symptoms it shows.... For instance: Is it stuck on the Garmin splash screen with copyright details or 'Loading Maps' at the bottom, or is it boot-looping.