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In-Field Update .NET micro framework



I’m using the In-Field-Update code form your website for my Cobra II and after some changes everything works fine. But I have two questions:

  1. It takes a very long time to create an application development for my update with MFDeploy. Is it possible to create an .hex file for the In-Field-Update with Microsoft Visual Studio?

  2. After updating the system reboot with the new Software, but the display isn’t calibrated. So I used the Reset Display Code:

static void ResetDisplay()
             Configuration.LCD.Configurations lcdConfig = new Configuration.LCD.Configurations();

            lcdConfig.Width = 320;
            lcdConfig.Height = 240;

            // Only use if needed, see documentation.
            //lcdConfig.PriorityEnable = false;

            lcdConfig.OutputEnableIsFixed = true;
            lcdConfig.OutputEnablePolarity = true;

            lcdConfig.HorizontalSyncPolarity = false;
            lcdConfig.VerticalSyncPolarity = false;
            lcdConfig.PixelPolarity = true;

            lcdConfig.HorizontalSyncPulseWidth = 41;
            lcdConfig.HorizontalBackPorch = 27;
            lcdConfig.HorizontalFrontPorch = 51;
            lcdConfig.VerticalSyncPulseWidth = 10;
            lcdConfig.VerticalBackPorch = 8;
            lcdConfig.VerticalFrontPorch = 16;

            lcdConfig.PixelClockRateKHz = 10;

            bool bNeedReset = Configuration.LCD.Set(lcdConfig);



and after ResetDisplay I reboot my System with Microsoft.SPOT.Hardware.PowerState.RebootDevice(true);

if (SystemMetrics.ScreenHeight == 0 || SystemMetrics.ScreenWidth == 0)

But the hardware reboot doesn’t work and I have to reboot extern with the reset button.
Then everything works fine.

Can anybody help me?

Thank you.



Hi Stefan,

Define “very long”? For me it’s a couple seconds for ~1MB of code. How much does it take for you?

I guess your problem is here:

The thread sleeps forever so Microsoft.SPOT.Hardware.PowerState.RebootDevice(true) is never called.


@ Stefan Kraus - which board are you using?


Cobra II.


Hey Gus and Simon,

@ Simon.For a small Programm ( max. 1 MB ) it takes 30 minutes!
I transfer the data with MFDeploy from my board over USB.

MFDeploy -> Target -> Application Development -> Create Application Development

Oh cool. I will try it!! Thanks!

@ Gus. At the momemt I’m using the FEZ Cobra II with the G120, but this is just our test board. Later we will use a board with the G400.



That’s obviously too much. Are you using WinUSB drivers or legacy ones?


Oh yeah, I thought so!

It could be that I don’t use the WinUSB driver!

Now I’m installing the new Version of your SDK. I saw there is a new version from oktober!

Will the WinUSB driver be installed by the new SDK?


No, now you’ll have to manually remove drivers from Device Manager, and then point the new ones.


Okay Simon! I will try it!

Thank you!


On EMX for a hex file of about 750kB it takes a second to create the file using mfdeploy over USB. It’s a bit longer when I use COM (less than ten second).
Same speed is achieve using legacy or winusb driver in my case