Thanks acid_Snak3. Yeh the info i read on team xecuter forum said it is preflashed with both ver 3.0.1 & ver 3.0.3 to cater for all xbox versions - that is what made me want to check if 3.0.3 is ok for mine.
I just read the readme that comes with 3.0.3 (which i should have done in the first place) and it confirms what you said - so thanks again!