1) Etrex 20, WebUpdater says that it is uptodate, ID 3875015106
2) I disabled the UK Openstreetmap and enabled Worldwide AutoRoute DEM. Switched off and now it will not restart.
3) I switch on, it goes through all the normal start up procedures but when it reaches "loading profiles" or "Loading complete press any key to continue" it switches off.
4) Yes eg no problem reloading the last software update.
5) I have downloaded the UK Openstreetmap that I had disabled but no change.
I reloaded the last update and again no change.
6) Yes
7) That is the number in 1)
8) No
9) Yes
10) No

I hope you can help.

Thank you in advance.

Peter