Moving SD card from Etrex 20 to Etrex 20x - Can't Authentcate Maps

**arc125** · 14th January 2018, 12:15 AM

Hello,

I've just purchased a Etrex 20x to replace a worn Etrex 20.

I cannot see any of my 1:25000 UK maps Garmin GB TOPO PRO maps on the maps list and I get the Can't Authentcate Maps message when i start the unit.

I've done an hour long sweep on this forum and others and I cant work out whats up. the only fault in JaVaWa is "Error: segment codes from this file reside in other files. This will cause problems with routing and/or displaying maps."

Any help would be greatly appreciated.

Thanks

Alex

**Butters** · 14th January 2018, 05:05 AM

You missed this: [Only registered and activated users can see links. ]

**arc125** · 14th January 2018, 07:47 PM

Thanks Butters - I did see this I was rather hoping to do it without such means - I'll have a look into it however these are devices for work thus if the risk too high I'll leave it alone.

Thanks again,

arc125

**Butters** · 14th January 2018, 10:01 PM

That was the wrong link I'm sorry, I didn't check properly. Your etrex isn't a protected device and you only need to unlock the map img files with gimgunlock. The thread has been removed but you can get get a download from this link:

Spoiler:

**mr_q80** · 17th January 2018, 10:46 PM

Try to.unlock the map using the latest map unlocker

**Butters** · 17th January 2018, 11:31 PM

@mr_q80
Actually, even the very first version of gimunlock will work for his etrex because it has "MVS: ---" and "GSV: ---". Certainly latest will work for sure as well as original though for an etrex.

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