I had an s17 53th that did not want to play with the new firmware.
To get it back to stock I upgraded to  the bitmain s17 5-24 firmware, then upgraded to the s17 12-25 firmware from the bitmain website using the GUI.
After upgrading to the s17 12-25 firmware it comes up in sleep mode.
Switched to normal mode and away it went. Pools still configured correctly. SSH disabled.