Hey Phil,

Do you still have the 841?

I bought 4 of them and trying to understand how to update.

This link has at least 3 different types of files:

- MM: I take it tis is the software inside the miner box itself? But how to update it?

- OpenWRT: I take it this is the microSD card inside the Pi? that is I guess easy to update, found some instructions here: https://www.cryptouniverse.at/avalonminer-821-841-861-setup-tutorial-troubleshooting-guide/

- PMU: no idea what this one is!

Thanks