this is the player i recovered - just for reference
it is a 1GB 2.4" SD card slot player.
hi princessanne1026
sorry to hear your having no success.
i used the NAND tool out of desperation and, to be honest, had no idea what to do with it. All i did was, once the player was in update mode in windows, i.e. recognized as a rock usb device, i just started up NAND and hit all the buttons in turn.
this seemed to work for me and my player, i do know that knob, who uploaded the tool, also had no luck with the NAND tool on his player so it may only work with certain hardware.
the player i have is a rockchip 2606, for the larger screen type, maybe that it the difference.
Are you actually at the stage where your player is recognized as a rock usb device in windows and not a removable drive as NAND, like consumer update, wont see the player otherwise.
keep trying is all i can say right now and let us know the result.
if all fails the it may be time for a new player, i have bought this one from
www.dealextreme.com

it was only $50 and is 2.4", 1GB with mini SD slot and free delivery.
good luck and let me know how it goes
makd