MF problems

This is a quick tutorial on how to get your midifighter into bootloader mode if the four corners method does not work.

The four corner method should result in a checkerboard pattern on the midifighter LEDs, if you do not get this when attempting the four corner method then you should take the steps detailed here.

These pictures use an unassembled midifighter, you do not need to unassemble yours to follow this tutorial.

If you have tried the boot jumper method before please try this again, I have used this method to fix 80% of returned midifighters.

Take note of the two unpopulated footprints on the top left corner of the PCB labled RESET and BOOT. These are what we will be using to access the bootloader.

Update: All midifighters made in the last 3 months have two micro switches fitted in these footprints. If you flip you midifighter upside down and see two red circles you do not need to use paper clips.

Step 1: Plug the USB into the MF and the computer.

Step 2: Use a paper clip or pin to press the little red button furthest away from the USB connector, hold this button down.

Step 3: Using another paper clip or pin press down then release the other red button, make sure the first button is held down as you do this.

Step 4: Done! Your MF is now in bootloader mode, remember this method does not result in the led pattern, once you have done this run the MF update application and ignore the instructions at the start - it is ready to update already.

If you don't have the red micro switches on the bottom of your PCB



Step 1:

Fit a jumper (a piece of uninsulated wire or solder) across the BOOT terminals as shown in the photo below.



Step 2:

Connect your USB cable to your computer and then the midifighter



Step 3:

Fit a jumper across the RESET terminals as shown in the photo below.



Step 4:

Remove the jumper from the RESET terminals.



The midifighter should now be in bootloader mode, please note this method does not result in any particular LED pattern so do not expect anything to change visually.

The BOOT jumper does not need to be removed before you attempt to flash the midifighter however you must remove it after sucesfully flashing the device.

Please note you must fit the jumpers exactly as shown in the pictures for this method to work.