Create backup of your Remotesw folder and trafficprovider.xml from your .System folder and extract rar in .System folder and try if GTM will work
http://www26.zippyshare.com/v/58948169/file.html
Try downgrade FW to 6.60 maybe then will GTM work like before.
Create backup of region 139 and 140 and we will compare to 139 and 140 from working nuvi 2495.
p.s.
Anybody have nuvi 2495 with working GTM reciver and can share region 139 and 140?
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