Hi ala42.
Firstly many thanks for your efforts. Much appreciated.
I am afraid to say that it was in vain. WinDWFlash reported the following:
Linear Check Sum = DF5D
Rotated Check Sum = 5602
Check Sum match !!
Start Flashing...
Don't turn off the power!!
======== FAIL 1========
I would appreciate any suggestions. I still cannot find this "BenQ to Philips" utility. I wonder if it really exists

Once again thanks for your efforts.