I have a board from flyduino with the correct labels on the back, but I am having problems getting v 2.2b uploaded to the board. 2.1 works fine, but after uploading 2.2b the board does not boot up (red led, but no green comes on) and the GUI cannt connect.

This works: avrdude -c arduino -p atmega328p -P /dev/cu.SLAB_USBtoUART -D -V -U flash:w:/Users/muthm/Downloads/SimpleBGC_2_1.enc.hex

But this does not avrdude -c arduino -p atmega328p -P /dev/cu.SLAB_USBtoUART -b 115200 -D -V -U flash:w:/Users/muthm/Downloads/SimpleBGC_2_2b2.enc.hex

Here is what the GUI java command like says:

When I run the 2.2 GUI and firmware i can see this in the java log after I hit connect in the GUI:

19:53:01,841 INFO Opened /dev/cu.SLAB_USBtoUART / EDT
19:53:04,901 INFO Starting board connection.. / ConnectThread
19:53:04,904 INFO Send command: [V,0][]0 / ConnectThread
19:53:05,205 INFO Setting baudrate: 57600 / ConnectThread
19:53:05,207 INFO Send command: [V,0][]0 / ConnectThread
19:53:05,507 INFO Setting baudrate: 38400 / ConnectThread


When I do it with the 2.1 GUI (and firmware) I get this:

19:58:06,275 INFO Opened /dev/cu.SLAB_USBtoUART / EDT
19:58:09,334 INFO Starting board connection.. / ConnectThread
19:58:09,336 INFO Send command: [V,0][]0 / ConnectThread
19:58:09,340 INFO CMD received: V / SerialPort
19:58:09,340 INFO boardVer: 100, frwVer: 21, betaVer: 0, deviceId: [-49, 7, -35, -91], licenseKey: [0, 0, 0, 0, 0, 0, 0, 0], activated: true / SerialPort
19:58:09,637 TRACE Saving application settings... / ConnectThread
19:58:09,646 INFO Starting realtime data thread.. / EDT
19:58:09,647 TRACE Saving successully connected port "/dev/cu.SLAB_USBtoUART"... / EDT

I have tried various hex uploaders on win and mac as well as doing it with power, no power and motors connected not connected.