All miners that we host come with stock firmware from the manufacture. Installing 3rd party firmware can greatly impact a miners performance and adds additional complexities to our company and facilities. Running stock firmware guarantees that machines are running as intended and that the warranty is not compromised. That being said, customers who are mining at home are welcome to consider running custom firmware on their machines at their own risk. Modifying stock firmware often void's warranty therefore we recommend you check with your Manufactures policies before making your decision.