@NUMETRIX , in order to check and upgrade your ESC firmware, you can install the latest VOXL2 SDK, which comes with voxl-esc tools.
scan:
voxl-esc scan
upgrade firmware:
voxl-esc upgrade_firmware
for reference:
https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/scripts/voxl-esc?ref_type=heads
(the voxl-esc tools are installed to /usr/share/modalai/voxl-esc-tools/) by the SDK. You can call the python scripts directly from there as well (as opposed to using voxl-esc wrapper). But make sure to stop PX4 first.
Alex