hi any help greatly appreciated here guys , I have a 9900 hd which has been factory reset now it wont recognise sandisc usb stick I also have the 9000 wich accepts it no prob, has the 9900 a diff format or some thing, i did use the same usb stick 6 months ago and it worked fine, now its as tho theres nothing plugged in , have tried red botton to config wich port but shows nothing, cheers for any assist chaps.