I'm developping an application for Motorola MC3000 that use WinCE 5.0.
It seems that the machine is using the .NET CF 2.0, I just want to update it to .NET CF 3.5 but I don't know how to do it on the machine.
Any help on this?
The .NET Compact Framework installs side-by-side. You can simply copy the CAB file to the device, and run it. On your PC, you will find it at %ProgramFiles%\Microsoft.NET\SDK\CompactFramework\v3.5\WindowsCE\NETCFv35.wce.armv4.cab.
If you need it to be reinstalled on a cold boot (user pressed 1 + 9 + power, or left the battery out for too long) you will need to write some code to reinstall it. See the documentation for wceload for silent installation, and see Motorola's StartUpCtl for a way to control the order that things are run at start-up.
Some of Motorola's Windows Mobile devices had updates to allow the ROM version of .NET Compact Framework to be updated - for example the MC70 from 1.0 to 2.0 - but I'm not aware of any that had updates to replace it with 3.5.