SOURCE: buttons and screen not responding on via michelin x-950t sat nav
stick a pin in the reset hole in the back.that should fix the problem.
SOURCE: MY GUIDE SAT NAV 3100 SERIES Car GPS Receiver: my guide sat nav 3100 series update...
switches on but no navigation. Press navigation and it bleeps only but will not change mode for search
SOURCE: My blaupunkt lucca 5.3 Sat Nav says PUK error
A
request for a PUK code ("Personal Unlocking Key") will appear on your
phone if your SIM card PIN code is entered 3 consecutive times
incorrectly.
Your SIM card will then become
"PUKed" or Blocked. This is a security measure to protect your service.
You
need to call the Customer Service department of your cell phone
provider and they will give you the PUK code which will unblock your SIM
card.
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