I have tried to install iGO 8.0 maps for Brazil on my AVIC-F90BT, but it seems that every ezrider.exe I try causes my unit to enter a reboot loop (unit appears to boot fine, but "system is starting up" message does not disappear from screen and it reboots later). Is there a working ezrider for these maps? I use firmware 2.008.

if you installed non-pioneer maps, then you will need to install "special" license files, and possibly a "modified" ezrider.exe to accomodate this.

you can find out exactly what is hanging igo (ezrider) by launching ezrider.exe (in \apl2\igo\ezrider.exe) from windows explorer from TESTMODE...