So I have an antminer s3+ and the of the latest firmware versions won't let me factory reset the device with the button on the outside of the unit. I cannot log in via browser because some settings were messed up inside the software. I know the ip address and where it is but it will not let me even access that at all. How can I factory reset this damn thing? 
There is also a way to connect via the 'debug port'. It is a serial connection.
Search S3 ttl for better discussions.
There is one thread which provides a step by step at the last page but it is discussed in detail.
BITMAIN WARRANTY, Dogie if he is still monitoring this thread, (I think he left the BITMAIN threads alone), and most will say get one from warranty, it is the only way. They sent me two boards a couple of weeks ago. It was nice of them for a bad situation.
How I chose to handle my now out of warranty units is made one of my existing units a "parts" unit, using fans for a replacement here, a hashboard there, etc. If a unit is performing poorly fix it, part it, sell it (with details), or replace it