Not me, i'm neither paranoid or not paranoid [just ignorant, which is bliss]. I agree that no preboot is a big worry though. Even with my limited fw experience i've been able to 'un-brick' plenty of nuvis using your Cure3 and earlier methods. The things without preboot like early SPs, GVNs and these navis must have some secret recovery methods known only to Garmin surely. JTAG or via the hidden usb maybe? I wouldn't know of course but it would seem to be quite cavalier of garmin not to have some method of recovery. But then 'Garmin is so Garmin' .... I don't blame you at all for feeling your way slowly with this. Seems more prudent than paranoid maybe.
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