What did a search on the flash drive storage chip serial report as the capacity for the chip?
You can not have what does not exist. If H2testw said you have 512MB true capacity and if a decode of the chip with manual inspection also says you only have 512MB then that is what you get, 512MB. Remember false capacity is what fake flash memory items are all about. Forget the labels on your item, even if it is stamped on the casing – this information means little. You have a fake, plain and simple. It will certainly hurt, if you spent a lot of money on high false capacity followed by the repair journey only to find out you have restored a tiny memory chip. This has happened to quiet a few people, you are not alone. Instead, look at what happened to you as a learning experience. You know more now and are wiser too. Share what happened to you with people, spread the word. Don’t feel ashamed. Do you know how many super techie people have been victims of fake flash memory purchases? It’s not how much you know about technology that decides if you are likely to become a victim. It is more
