Nuvi firmware recovering - system software missing
I recently downloaded the Nuvi 660 firmware upgrade from the Garmin site to upgrade to v2.70. I did this as I read some other comments that the Garmin webupdater application has (in some cases) caused corruption.
I ran the firmware update as per the instructions from the Garmin website and two .bin files copied to the unit but the third file (I can't recall the extension) failed to copy with a file in use error. I could not work out a way to recover from this as the upgrade failed (not fully complete) and the only option was to reset the unit via the power button.
When the unit came back up again the following error came up on the screen:
2. HOLD down the power button and you will see "Pre Boot Mode" appear on the lower part of the display. KEEP HOLDING the power button down and the display will flicker, do this until the pre boot mode message disappears. This seems to take a long time (60 seconds at least).
3. Once the pre boot mode message disappears release the power button and your device will perform some activities to recover from the above problem.
Apparently this sequence will only work with the above error. I hope this assists other if they encounter this problem.
I still don't know why the firmware upgrade process failed BUT after performing the above sequence I found that the firmware upgrade had actually worked (strange).
Thank you, thank you for sharing the info on holding power button down. I just updated my Nuvi 660 from v.3.5 to v3.6 software and got the error message. Yes, it took at least 60sec for pre boot mode to disappear but once it did, unit was back to normal with v3.6 OS. Thanks again Nick!
Thanks You Nick!!!
Your procedure worked great,had the "System software missing" after a Webupdate_241. I was on WiFi late at night with very good speed,it all took only about 5 minutes. When I tried to do it again,I got the message that the 670 was already updated,tried to update again,got the message"The update file is corrupted".
But your procedure worked,took a good minute for the flicker and then the Pre-Boot message to disappear,then it started loading some Bluetooth update and then came back to the normal screen.
Your tip on holding the power button and waiting for the pre-boot sequence saved the day on my nuvi 350 when a software update to V6.0 failed and gave me the ill-fated "system software missing" error. When finished, the update had actually completed to V6.0