So i have tried installing your firmware.
using SD card. Red and green light LEDs stay on. 20mins later they are still on. No difference.
Doing upgrade route from web page gives me Cannot Find Signature!!!
Miner Type Antminer S9 SE
Kernel Version Linux 4.6.0-xilinx-gff8137b-dirty #25 SMP PREEMPT Fri Nov 23 15:30:52 CST 2018
File System Version Thu Jul 11 09:57:07 CST 2019
Any suggestions?
All Ii want to do is underclock this PoS.
Do you have any extra SD cards?
Maybe your SD card is damaged or an SD card that always corrupted when transferring files.
Try to use a known working SD card and make sure to use
this firmware as the guide above and make sure you push the card to the slot properly.