HiveOn Firmware Warning

Hi all. I’ve recently posted about me switching to the HiveOn firmware on my L3+.
The firmware works really well.
I just found out that the HiveOn firmware is Signed and disables memory card flashing.
If you want to switch from HiveOn back to stock or any other firmware I have not been able to figure out a way to do it. They have instructions to do it on their web site but they do not work for me.
My miners are currently stuck with HiveOn firmware.
Just a warning if you switch you might be stuck.
I’m still researching different ways but nothing so far.