You should find what you need and more just here: http://www.4shared.c...eer-avic.html?
I was looking for this file too and went to your link, but which files are required for which device? These are the ones pulled from the four archives on 4shared.com...
- SDMLC_NN746_UC_sn00aa0f.img (I'm assuming this one is for US/Canada devices)
- SDMLC_NN749_UC_sn000617.img (I'm assuming this one is for US/Canada devices)
I don't want to just start trying these with the shot-gun approach... I've been doing too much of that recently with very little success!