LUMO - Firmware Update - Instructions at bottom of page

Note: if your firmware is several versions out of date, you can jump straight to the latest version instead of installing each in order of release.

Version 1.4 - click here to download

Change notes:

  • Fixed ISO memory bug by giving two memory options in the menu. If you have the ISO memory bug, change your memory location to “FLA” on the S tab of the menu

  • Added ND filter option at the bottom of the main menu

  • Fixed bug where meter would shut down sometimes after a flash was detected

  • Added ISOs from 1 to 1024000 in 1/3 stop increments

  • Animated charging / charged indicator when plugged in (only when off/shut down)

  • LUMO can now be used when charging

  • Improved flash/ambient ratio calculation accuracy

  • High ambient levels warning when in low range flash mode - high ambient levels can swamp the flash detector, requiring you to switch to high range flash mode to detect the flash fire. This message is shown when you ready the meter for flash based on the ambient level at that moment.

Outdated Firmware Archive

How to Install

  1. Connect a USB-C cable into your computer’s USB port.  The included USB-C cable is ideal.  If not using the included cable, make sure the cable is not a power-only cable and has data lines, most cords included for devices that only need charging (flashlights, earbuds, etc.) don’t include data lines. Cell phones, USB hubs, any cable that came with device needing more than just power will have them.

    2. Turn off the LUMO if it is on

    3.  Hold down the right button

    4. With your other hand, insert the USB-C cable into the meter’s USB port.

    5. When prompted on the LUMO screen, release the right button and hold the left button

    6. Keep holding the left button until a storage device appears on your computer.

    7.    The first time, your computer may install some drivers.  The meter will appear as a USB storage device named “RPI-RP2”

    8.    Copy and paste the “.uf2” firmware file that you received from Reveni Labs onto the device

    9.    Agree to any prompts about copying the file

    10.    The meter will self-eject from the computer once complete, ignore any messages of “improper” or “unsafe ejection”

    11.    Once transfer is complete, disconnect the USB-C port from the meter

    12.    Enter the Settings Menu and confirm the version number at the top of the screen is now updated.