@all
I think the best advice is to stop using GE. This 'all-in-one' updater is making devices act weird and it's hard to know exactly what has caused the problem when everything is updated together [fw, maps, voices, text, wotever!]. Garmin needs to fix it. I have an NA 3597 which functions fine and has never been touched by GE. I use WU, MU & MI only, usually with a 'nuvi stunt-double' on a flash drive. I won't even use GE if the unit's within warranty, too many hassles.
@isg
I agree with Loly who is always right anyway. That is really abnormal behaviour for your unit. It should enter preboot only by holding over the 'G'. Can you clear NV ok? Even if you don't have a files backup, i would be reformatting with RMPrepUSB also and if still plays up restore NV if you have a backup of that. The unit must be under warranty in any case so flick it back to Garmin if you can't fix it soon.
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