PS4 stuck on IDU in FW 8.50

Hi everyone,

I recently bought an used PS4 that had CFW 7.55 installed on it, but the previous owner accidentally updated it to FW 8.50.

I'm not sure if they messed with IDU options, but now the PS4 is stuck in IDU mode in OFW.

Is there anything I can do to fix this? I know downgrading is impossible, but is there anything that can be done to go back to the regular, non-IDU mode in the original FW?

Thanks!