I have a R15-500 with 0x121C downloaded on 7/20/08. I read in the HD DVR Tips and Tricks that you can force a download by resetting and slowly pressing "0 2 4 6 8" at the "Hello Screen". I tried it twice and it didn't work. It reset, reloaded the guide but the software version stayed the same. Should it work on an R15? If so, how? Thanks.