Had R9 380 that I tried to flash. Flashed the card with new BIOS and booted the rig, everything worked fine. Started up Claymore ETH miner and I'm was seeing a hashrate of 52 Mh/s from my newly flashed R9 380 . Felt good man.

But of course it was a glitch and true hashrate was around 20 Mh/s.