graham01 , firstly, it is not as advertised to be 4GB. The Samsung K9G8GO8UOM is an 8 Gigabit (1 GigaByte) player.
Did the player arrive DOA? If so, i'll suggest you contact your seller for an exchange or refund. But i'll recommend a refund as it's not a 4GB player in the 1st place.
Your player would be running a v9.0.xx series firmwares, so you can try the firmwares in here
http://www.mympxplayer.org/actions-9...mare-dc37.html
But at this moment, the S1fwx firmware extraction tool does not support any versions higher than v9.0.43, so you might face a problem. So an exchange or refund would be another option if the firmwares do not work.