That's unfortunate because i don't know anyone with a 550/560. I've checked some nuvi splashes and it's almost identical to nuvi 7x5 splash with only a couple of bytes difference however standard US/EU 7x5 has JCV etc already enabled so maybe I'm on the wrong scent there.

Just in case 140 is protected from copying, please check if there is a file named "supported_features.html" (.System/Diag/html/supported_features.html) on your 500. If aera doesn't have .System folder then that html file won't exist. To show the hidden .System folder in Windows, go to Control Panel > Folder Options > View then enable the radio button for 'Show hidden files, folder and drives' and uncheck 'Hide protected ...etc.':

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Perhaps someone else has a senior model aera and will dump rgn16 ........ Can anyone help us with that please?