I know those are old miners, but nevertheless I'm trying to put my old S9k miners on my HIVE "account".

The miners have signature-locked firmwares from the factory (Jul 28 2019) and they give me a
"Installer Not Signtured!!!" error when trying to flash the "S9k-stock+client-20190929.tar.gz" firmware from Hive.

Anyone know where to find an old SD roll-back firmware I could flash with the SD-card technique so I
can finally go on with then flashing the HIVE client firmware?

Failing that, is there a signed alternative firmware for the S9k that will let me at least have access to voltages/clocks?

Thanks in advance guys...