Hi

I'm quite new to car audio equipment, and I wondered if F700 units can be flashed to F900 (for scientific purpose of course) ?

I understand there are some hardware differences (like speed sensor), but i guess some features like DVD playing could be enabled on F700 ?

No the F900 and F90 have CD/DVD combo drive. F700 only have CD drives.

The 900 also has hardware for dead rekoning via the VSS wire, the 700 can't make any use of it.

The 900 also has hardware for dead rekoning via the VSS wire, the 700 can't make any use of it.

What is this BTW?

The 900 also has hardware for dead rekoning via the VSS wire, the 700 can't make any use of it.

 

What is this BTW?

Its a nautical term. Without GPS (heaven forbid), when I'm underway to another location I have to keep track of where I think I am. Based on the speed of my wheels (propellers), correcting for wind and sea putting me off course, I can make a good guess as to where I think I am. I take that best-guess and then take a measurement by the angle the sun or some stars are to the horizon and I can get my location within about a quarter mile.

In the AVIC, the VSS is used for keeping track when you're out of LOS to the sky, like in a parking garage or a tunnel. This makes the GPS calculations a bit quicker when picking up a GPS signal again; instead of starting from scratch not knowing where you are, the unit can throw out about a dozen calculations and get to the fine tuned math problems that pinpoint you to within 20 ft.

SO is this why when i make a hard turn the system lags because my f700 doesnt actually have a VSS so it can tell as fast that im slowing down and possibly turning?

SO is this why when i make a hard turn the system lags because my f700 doesnt actually have a VSS so it can tell as fast that im slowing down and possibly turning?

pretty much

Thanks for making that clear gentlemen