I think I did that with my O3DS. way back. but didn't own a gateway so I had no way to launch my emunand. so gave up on it and updated back to 9.2 or even higher, can't recall. then ninjahax happened and I got a9lh + luma3ds sysnand 10.7 on it now.I need help from someone who has ever used Gateway to downgrade O3DS to 4.5.