The latest MetaConformer firmware can be found here:

Update instructions:
1) Connect MetCon to your computer where you downloaded the new firmware
2) While holding the CFG button, press the RST button. Once it’s detected by your computer, all its LEDs will turn on and Windows will open MetCon in Explorer, showing an empty folder. Sometimes it takes several tries before it makes a connection, it’s normal.
3) Copy the new firmware into the empty MetCon folder.
4) Rename the file to blink.bin
5) Click on Safely Eject, then disconnect MetCon

The manual can be found here: