mode, making it visible to the Teensy software, press all four buttons by the
display simultaneously while the display is not active (or open the case slightly
and press the program button on the Teensy). If you get a message in the
Teensy loader app that the hex file you selected is too big, just ignore it and put
your instrument in program mode. The board version will be recognized and
the hex file can be uploaded. If the app is in Auto mode it will upload as soon
as you get the instrument in program mode, otherwise you need to click
Program and Reboot after the Teensy chip has been recognized and the Teensy
picture in the app has gone from faded to normal. Firmware update releases for
NuEVI and NuRAD (they have separate .hex files for update) are found at
https://github.com/Trasselfrisyr/NuEVI/releases
Factory restore
Only if you are sure this is what you need to do – to restore the factory
default settings, including sensor adjustments, hold ENTER and MENU buttons
when switching on the NuRAD. Do not touch keys/sensors. Release buttons
when the orange LED glows steadily. Make sure you take notes or take photos
of settings and sensor adjustments before doing this. Your sensor calibrations
will be off target when reset, and you have to set them right to have a well
performing controller. Note that some older instructions for firmware update
mentions doing a factory reset. This is not needed anymore and should better
be avoided.
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