Dear
I would like help to install 860 map on my go 740 device.
I give a try, and can't success.
My Device (working well, before try):
map 810
bootloader: latest available (I think 5.5.20, didn't have my device at work now)
navcore 9.058
Hardware thing:
I had a 4GB SDHC Card, except internal.dat on internal memory and autorun.inf, all date are exactly the same between internal memory and SD Card.
My computer is Win ...