Thanks for voting for me!
But it is not true that your issue was left unanwered for two days.
In fact both demi gods of this forum (in TT matters) tendriver and downunder tried helping you.
To be frank, it is quite an accomplishments what both gentlemen do without any financial reward for all those people dealing with updates for their devices.
The fact remains that it is no normal matter that ttgo.bif is not created. That does indicate some error within the device.
But on the other hand you stated that it worked if you reinstated the backup (including ttgo.bif).
Although unusual I would think it not impossible that your TT would work if you would create a ttgo.bif manually with the correct data for the navcore (and map). I stated this idea a few days earlier.