Here is the latest version of PrimoBinatones are easy...
Download the above file and your required maps from the
map section
Extract everything, rename the downloaded Primo folder to Primo2
Then create a text file with...
\SDMMC\Primo2\Primo2.exe
And save it as SHELL.ini NOT SHELL.ini.txt, Double check this!
Place your map file in the Primo2\Content\Map folder
Copy SHELL.ini and the Primo2 folder onto a blank SD card and place into device, reboot device and Primo will load instead of the original app.
Post back when you've got this far and i'll guide you through the setup.