Was looking at some You Tube videos and thought that I might be able to swap the unit myself! Anyhow, about the pen drive issue., maybe its due to the format of your pen drive? Because I cant seem to find any info on this! Also, was going through Blaupunkt India's Facebook page and they have mentioned it a number of times that the products sold on Snapdeal will not be eligible for warranty. This his got met thinking!