I've been thinking about this for a while.
A lot of people have the problem of the Nuvi not fully booting due to a corrupt recently installed / updated map.
Would these commands work to remove corrupt map and make the nuvi boot fully or at least get USB Connectivity.

"here we could put commands to first copy the maps to the memory card"

copy,0:/Garmin/gmapsupp.img,1:/Garmin/gmapsupp.img
copy,0:/.System/gmapsupp.img,1:/gmapsupp.img
copy,0:/.System/gmapprom.img,1:/gmapprom.img

"then we delete selective files."

del,0:/Garmin/gmapsupp.img
del,0:/.system/gmapsupp.img
del,0:/.system/gmapprom.img
del,0:/Map/*.img
del,0:/.system/GUPDATE.GCD
reboot

Please give me your views.