Botched Map Update

[revrnd]

Tonight when I plugged my Montana 700 into my laptop, I got a message saying an update was available. I opened Garmin Express & it showed an update for Topo North America. OK, I use it all the time. I go thru the steps & then get an error message. When I opened BaseCamp, no listing for the 3 sections of Topo. I check the GPS & no Topo maps on the 'layers'. Then I go to Map Manager & again nada.
 

Has anyone heard of an update removing an installed map (it was included w/ purchase) from the GPS?

 

(Sorry about the shading) - Fixed - Moderator

Edited November 30 by robertlipe
Fixed unreadable color choices

[+GeoTrekker26]

I would guess that the update was not trying to delete the existing map set but was overwriting it. The error made the file unreadable so the effect was to delete it.  Maybe Garmin will be able to help you. 
 

Any chance you made a backup before you did the update, even an older one?

[revrnd]

16 minutes ago, GeoTrekker26 said:

I would guess that the update was not trying to delete the existing map set but was overwriting it. The error made the file unreadable so the effect was to delete it.  Maybe Garmin will be able to help you. 
 

Any chance you made a backup before you did the update, even an older one?

Unfortunately no. I have contacted Garmin.

[dave and jaime]

This is ironically close what happened to me and what me here after being away a good number of years...

 

Mid-November I was trying to update the topo maps on my map 78s and it corrupted - now it 'work' but no basemap, wont power on for a 2nd cycle unless batteries pulled and only stays connected to PC via USB for a few seconds when trying to pull existing data iff it.  Garmin was no help, but I did find a group in gErmany that says that can bootstrap the firmware but $$$ are not practical so i ordered a new 79s...

 

Anyone have experience correcting corrupted firmware to recover 1 of these handhelds?