Jethro is correct. The firmware that you posted is not correct for a dvd burner, but rather a cdrw/dvd-rom drive.
Unfortunately, you're confusing the terms driver and firmware.
They are not the same.
Assuming you're running in windows XP or Vista, your hp burner will use the operating system's default (or native) drivers. In other words, there are no drivers to download for your hp burner. You can rollback or uninstall the driver for the burner as IT suggested, but it won't help the incorrect flash.
Let's say you uninstall the driver, one step beyond what IT suggested
When you reboot the system, windows will recognize the device, install it and assign the appropriate driver.
This won't hurt anything, but it won't change the fact that you flashed the wrong firmware to your burner
Firmware is a set of software instructions that is stored in the flash ROM (read only memory) of a hardware device.
You're going to have to try and reflash your burner with the correct firmware