Well, mtkflash or MTK WinFlash in Direct IDE Port Mode are your only options of recovery so if you're completely sure that they don't work then you have no chance.
If you haven't already, go here and download the 2.2 firmware in binary format. Download MTK WinFlash and run it in direct IDE Port Mode. Unplug all other optical drives in your system. Point MWF to the location of your DVD-ROM drive and then point it to 2.2_full.BIN and flash.