Below 3.8V they are due to be replaced, and the indicator will say BAT LOW. If
you are using NiMH rechargeable batteries or the optional LiPo built in
rechargeable battery , change the battery type setting in the EXTRAS menu to
corresponding type. This will set the right threshold value for BAT LOW
indication (3.6V for NiMH and 3.7V for LiPo).
Going into the ABOUT menu, you will also see the set battery type and a
rough approximation of remaining battery percentage.
Battery replacement (AAA and AA)
With the NuRAD/NuEVI switched off and disconnected from USB or DIN
MIDI, unscrew the frontmost thumbscrew on top of the controller and loosen
the one at the back of the battery compartment slightly. Slide the lid forward
and lift it off the controller. Replace the batteries (3xAAA or 3xAA, Alkaline or
NiMH type) and slide the lid back in place. Get the front thumbscrew in place
first, then tighten both screws. Only finger gripping power should be applied.
Do not use pliers or similar tools or you will most certainly scratch the plastics of
your instrument.
Firmware updates
Updates for the NuRAD/NuEVI firmware are supplied in .hex format when
new features or bug fixes are released. The current firmware version is shown in
the NuRAD/NuEVI display while powering on. Firmware upload is done using a
software tool called Teensy Loader. It can be downloaded from https://
www.pjrc.com/teensy/loader.html, where you also find instructions for using the
Teensy Loader to upload the .hex file. To restart the NuRAD/NuEVI in program
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