This did not work for me.
I know they have patched it, but I cleared my cache and played offline. As soon as the Old School cheev popped I dashboarded and re-loaded the last checkpoint and changed the difficulty to Hardcore but no cheev.
This obviously doesn't work for everyone.
I fucking hate this glitchy POS game. The times I had to replay parts because I fell through the floor or got stuck in a filing cabinet was a joke!
Really didn't want to play this 3 more fucking times