Says memory full and will not work

I have Nuvi 250. Suddenly it started to say "Memory full" and "Waypoint memory full". It shows maps but d't routing.
Connected to PC I see about 52 Mb free space.
So saved files from POI folder ( custom POI) and GPX folder (current) then disconnected Nuvi and OFF.
Next step- depressing LOWER RIGHT corner of screen get ON.
I got " Are you realy want to erase all user data?"- Yes
And now problem solved!!

Yuo must again make your settings and copy poi and gpx back.

Spydee,
Awesome post. Helped me!
Thx!!
/Swede

Hi dogman33,

This is a common problem with the nuvi 660s with older firmware.

Garmin's solution is to perform a "hard reset" and to upgrade the device firmware.

Upgrading firmware is an easy procedure, just visit Garmin's website (www.garmin.com) and download the software called WebUpdater. Run that and follow its directions.

Here is how you can perform a hard reset to clear all your waypoint memory:

MAINTENANCE MODE:
Step 1. Turn your Nuvi unit off, remove any SD cards from the SD card slot and make sure that the unit is not plugged into any computer.
Step 2. Place a fingertip on the upper left hand corner of the touch screen and keep it there while turning the unit on, a prompt should read " Do you really want to start in maintenance mode?"
Step 3. Select the yes button.
Step 4. Enter your PIN if enabled.
Step 5. Main Maintenance Mode screen should have 4 selections:
System information
View Diagnostics
Clear User data
Clear Waypoints
Step 6. Choose "Clear Waypoints". After some time the unit should reboot.

Hope this is helpful!
spydee

Hello is anyone out there that can help me my garmin has a green screen on it after trying to update it for the first time from the Gramin website and it will not shut off or read when it is connect to my computer Pleas HelP!

THIS WORKED VERY GOOD FOR MEMORY FULL.

go to your trash on your computer or mac and empty it when your garmin is plugged it .it worked for me seemds the unit still thinks files are there even when in the trash 

I put Solution #5 w/o login as Guest. If some questions&