Without preboot mode it's not recoverable.
To absolutely sure it can't enter preboot check these points:
- Ensure that the PC has [Only registered and activated users can see links. ] loaded (preboot mode won't be recognized otherwise).
- Try with several different USB cables.
- Find another Windows computer (even an old XP PC will do as long as Garmin USB Drivers are loaded).
Also, try this method to reach preboot:
- Ensure the 1310 is completely OFF (hold the power button down until the Garmin logo disappears and the screen is blank).
- Open Device Manager on a desktop PC and leave the window visible.
- Plug a 'known-good' miniUSB cable into a REAR USB2 port (don't use a front port, a hub or a USB3 port).
- Firmly hold the top left-hand corner of the screen then plug the miniUSB plug into the nuvi (Don't touch the power button).
- Watch to see if "GARMIN Devices" pops up in Device Manager which indicates it's connected in preboot, wait for several seconds at least to see if it's recognized.
- If it doesn't work then start over and keep trying ensuring it's powered off each time. Even if it only connects one time in twenty it can eventually be flashed with Cure firmware to re-enable MSM.
If it still fails to be recognized after that test is done numerous times then it's permanently bricked and only good for parts.
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