Why not remove anything sxos related on your sd card then see if you still have the error message.
Autorcm doesn`t auto boot a payload so with the sxos stuff removed Autorcm would boot to a black screen waiting for a payload.
If youre still using the usb loader you could use this tool to make...
Install it to your switch :)
Press install via usb , tick the files you want uploaded then where you want to install them.
You want to have pre selected the files from your PC using nsusbloader in Tinfoil mode and it is connected to the switch .