Hello,
( sorry for my english )

I bought a Garmin GPSMAP 420s in second hand ( It's from 2007 )
It was shipped with a map of Bretagne ( north west of France ) , But I live in the South ( Méditerranean sea ) .

So i'm looking for a Map of the south.

My problem : I have tried to use Gimgunlock with a map of an other GArmin Mediterranean sea SD card ( wich is ok on my 420s ) , but it doesn't works.

I'have tried to with the original map of bretagne : make a copy of the SD card, and use also gimgunlock, but it doesn't work to .


Please, could you tell me what I have to do ?

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What is ma mistake ?

Thank you for your help

( I hope my english writen is readable ! )

toby64 Reviewed by toby64 on 15th May 2024. Maps for Garmin GPSMAP 420s ... Hello, ( sorry for my english ) I bought a Garmin GPSMAP 420s in second hand ( It's from 2007 ) It was shipped with a map of Bretagne ( north west of France ) , But I live in the South ( Méditerranean sea ) . So i'm looking for a Map of the south. My problem : I have tried to use Gimgunlock with a map of an other GArmin Mediterranean sea SD card ( wich is ok on my 420s ) , but it doesn't works. Rating: 5

i have a solution