Hi and welcome around the forums,
Flashing from cd-r should work also (I've tried it with my 1108IM). But you
boot and flash from a other CD/DVD-ROM drive.
what you have to do depends on where your drive is located and version of mtk flash you use.
I would suggest you to work with version MTKFlash 1.80, flashing with version 1.80.1 didn't work always.
I saw you've posted in the DOS flash thread to, just contiue reading there.