MC75 OS upgrade WM 6.5

Hi everyone

 

I'm working with Motorola MC75 handheld

 

OEM Name: MOTOROLA MC75

VERSION  1.27.0003

Windows Mobile version:   6.1

Microsoft .Net -compact Framework: [ 2.0.7045.0]

 

I would like to know if there is any upgrade to have the OS working with windows mobile 6.5, if so what would be the way to get this firmware upgrade.

 

Thanks so much in advance.