Here is my experance with the G3 and Garmin .
Have longed for this update for months .
I checked on their website , to make sure my older 740s , was compatable , for this G3.
It clearly stayted that it was .
Got it , installed it , and it was complete garbage .
Nothing worked .
Reread your post , and realized I needed to update software to 4.3.
Ordered the update from Garmin.
Installed the update.
Put in G3 and nothing .
Called Garmin , and the tech stated that my unit , being older , was not fully compatable , it would only do very limited things .
Well after telling them , their website fully stated that it was compatable , he put me on another 30 min hold .
When he came back , he told me that I was 100% correct and their webpage should of stated that .
His supervisor was very appologetic , and asked me how Garmin can help .
Long story short ... I still won’t habe a Simrad with FMT yet .
Garmin took a 100% refund on the G3 vision card and is sending me a 2019 Echomap plus 74sv with G-3 preloaded for $150 more than the price of the G-3 Vision card was .
🙏🏻 We will see 🙏🏻