Diagnose firmware update in Windows

If you cant get firmware to update/install on your device do these steps.

Try boot into DFU mode by:

1. Plug device into computer
2. Press and HOLD the DFU button, While still holding the DFU button, press and release the reset button (WHILE STILL HOLDING THE DFU BUTTON).

Note : in some particular H2 (ex H2R4 with battery ), reset button does not make a proper reset , it just freeze the screen , and do not allow you to enter in DFU . In that case, unplug it from the computer, switch off the unit with two short pushes to the big encoder knob button (power off). And then keep pressing DFU button , a short push button to the encoder knob button (power on) leads you into a proper DFU Mode. And now you can plug it through USB cable to the computer, and continue with process.

3. Check Windows device manager and see if you have LPC showing up

4. If it shows up then make sure you download the latest version of mayhem_vx.x.x_FIRMWARE.zip from GitHub here https://github.com/portapack-mayhem/mayhem-firmware/releases/latest. You can then run "dfu_hackrf_one.bat". Now double check the file name as they look quite similar.
5. Once it opens, press enter on your keyboard and you should see the following:

6. Once that is done, you need to check device manager and see if you can now see a new device showing up

7. If this device is showing up, then you can now run "flash_portapack_mayhem.bat" and press enter. You should now see the following:

8. Once that is done, you should be able to press the reset button and your device will boot up. If not, then please refer to the wiki here: [Won't boot](https://github.com/portapack-mayhem/mayhem-firmware/wiki/Won't-boot

Unknown device

If you see Unknown device then you will need to install your device drivers.