Navman S90i

Hi I have two of these that are a little unstable as far as maps are concerned. I have been back to Navman who say they no longer support these units ......Does anyone know if I can wipe these units and install a new system on them .... and if so how ... I am fairly PC savvy but not that deep into programming etc ... so easy to follow format would be appreciatted if you have an answer
kind regards

Paul

You have a choice...

http://www.navitotal.com/showthread.php?8169-Run-iGO-Primo-2.0-on-Mio-Moov-and-Navman-S-series-(and-some-F-series)-in-ten-steps.

http://www.navitotal.com/showthread.php?8018-Run-Tomtom-on-Mio-Moov-and-Navman-S-series-(and-some-F-series)-in-ten-steps

Primo is better as Tomtom is very basic in comparison.

And you are forgetting this : http://www.navitotal.com/showthread.php?5399-No-need-to-unlock-Navman-S-series-%28S30-example%29