Application 8.37 problem
Just upgraded to 830 with application 8.312. Tried to update application to 8.351 but couldn't (it looks like from above it's not available for US.) Following TomTom Tech's instructions, I finally got notice of a new application, 8.70, so downloaded it. Ran on TomTom, but Home wouldn't "Operate my Go". Upgraded to TomTom Home 2.7, no help, so removed it (2.7 was never offered again).
Finally deleted everything (several times) including Home, TomTom internal, removed micro SD, and copied original Windows backup to internal memory. Upgraded map to 830, worked ok, upgraded application to 8.37, can't operate Go from computer. Now I'm back to 830 with 8.312 and waiting to hear from TomTom.
There has been a lot more done in two days of dinking, but the bottom line seems to be that there is a problem with TomTom Home 2.6.4 "Operate my Go" for 740 Live running application 8.37.