Download the Current EcoPak Control Software Zip file.

You must unzip or decompress the file.

Put the program on a USB stick

Make sure there is no other content in the USB stick

Plug the USB stick into the processor card

Reset the power

Green and yellow lights will start fl ashing, wait until the yellow light goes out and just solid green is there (takes 40 seconds or so). Do not remove the usb stick during the upload process.
Unplug the USB stick then reset the power

Green and Yellow lights flash again and spa boots up with the new software.