Hello to all, i am a owner of the "broken"1490 without T (hope for now).
After install 6.2 via webupdater the GTM has update too.
In screen shots on service menu in every five minutes has a loop message "Bounce GTM" and antenna start search again.
And /ecc/ change every second from e1 to e2, nothing else.
I think this GTM update is a point to research (currently ver.3.10, last and only downloadable via myDashboard).
And other strange things, with web updater i can"t reach additional updates like cars, voices and keyboards.
Every time say has a new ver.6.20 and loop (in device version of fw is 6.20).
Garmin Express say no connection wit the device too (with installed USB drivers of Garmin, no mater of OS XP or Win7x64).
Only chance to reach additional updates is via myDashboard on the official website (not all updates, but most).
I research how to downgrade version of GTM but no success for now, the icon for traffic subscription has gone.
I attach a device .xml for research, and one more.
Custom fw has based on sg/mal version of software, this is very strange for me -
Its TW came from old custom version or is coincidence?006-B0972-00620nГјvi 1490*********IQ33TW5
Thx in advance, i hope help masters to resolve this mystery with TMC on nuvi 1490 with 972 board.
Sorry for bad English, write without stupid g**gle translate.
try to clear traffic providers list, master reset with attach antenna too, but no success.
There is a shot from service menu when press and hold battery indicator:
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