This firmware requires use of the .NET Micro Framework v4.2 Beta 1 SDK. Users must completely erase and reflash their Netduino Pluses to use this firmware.

WARNING: This firmware is pre-release firmware. It may temporarily cause your Netduino to cease functioning properly. If this firmware does not work for you, you will likely need to erase your Netduino completely and re-flash the production v4.1.0.6 bootloader using Atmel SAM-BA tools (on a 32-bit Windows installation) and the production v4.1.0.6 firmware using MFDeploy.

NOTE: This beta firmware must be used with a beta version of the Microsoft .NET Micro Framework SDK.

If you’re an early adopter and would like to help us test and refine these new features, this beta release may be for you.

This firmware includes the following updates:

1. Visual Basic support (including Visual Basic Express 2010)
2. StringBuilder support
3. Extension method support
4. Dozens of bugfixes

More details, download link and discussion can be found here:   Version: 4.2.0 BETA 1 (version 4.2.0.0 b1)

With this firmware, you will have the following resources available for your code:

64KB Flash
28KB+ RAM

This firmware includes the following updates:

1. Early support for some 4GB+ MicroSD cards (courtesy of community member KodeDaemon)
2. Early UsbClient support (requires deploy/debug via serial)
3. Pushbutton (SW1) now returns true when pushed, false when not pushed

This update also includes updates that were in the prior BETA releases… the complete list of all the upates can be found here on the Netduino forums.

Version: 4.1.1 BETA 1 (version 4.1.1.0 b1)

There is also a special “extra memory” edition of the v411 Beta firmware. It has 50% more available ram.

Version: 4.1.1 BETA 1 (version 4.1.1.0 b1) – 50% More Ram!

Same form factor as the Netduino.  But with some extra goodies.

Processor and Memory

• Atmel 32-bit microcontroller
• Speed: 48MHz, ARM7
• Code Storage: 48 KB

• without networking: 128 KB

• without networking: 60 KB

This has the same number of ports, pins, etc as the Netduino… but it now includes an onboard MicroSD card slot, and an onboard RJ45 Network connector.