TDK 40/12/48X only burns at 2x

Recently I upgraded the firmware (“BP171t01.bin”) on my TDK 40/12/48X. When I use Nero, the option of burning from 2X to 40X are there, but as soon as I place a blank disk in, it will only let my burn at 2X. It was working fine before the flash upgrade. Can anyone help my out here??? :confused:

I’m having the same issue. I use roxio 5.5. I have flashed this firmware upgrade on 98me and never had this problem. I have since clean installed 2K and now have the same issue as dman. When I re-install Roxio/repair it’s ok for a burn or two then defaults back to 2x.