Just finish applying invisible shield after 2 hours of struggling. The end result is not what I expect. Lots of dust although because I was wrongly use bad quality tissues although it claim dust-free tissues. 

For any new owner, my advice:

1. Beware of dust, work in dust-free environment.
2. Apply back cover first to get some practice.
3. Use glove if possible.

Now my 5800 look ugly with all the trapped dust and bubble.   

But the touchscreen responsiveness still the same and I like the rubber feel. 

For my garmin with agps on, about few second will be locked while without agps take around 5minit+ and im using garmin 5.00.20

Which folder to find to delete the thing?

Show me plz....

your garmin what version?