https://www.redpandalab.com/downloads/
You will need a power supply and a standard USB A to Mini B type cable wired for data to connect your pedal to your computer.
See our Knowledge Base for a list of recommended power supplies:
https://support.redpandalab.com/support/solutions/articles/43000020227-which-power-supply-should-i-use-with-red-panda-pedals-
If your Tensor's serial number is 108-066999 or lower and you are using a Mac, there is a slightly different process for updating. See this article for more information:
https://support.redpandalab.com/support/solutions/articles/43000645007-tensor-firmware-update-fails-blinking-red-light
Please contact us directly for technical support and questions:
http://www.redpandalab.com/contact/