How to undo hack on fake memory card

Question

I bought an SD memory card 32gb that I didn't know was fake till I used it on my PSP, then I tested it with h2testw to know the actual capacity and it was way lower than 32gb,maybe about 4gb, please how do I restore the memory card back to the amount it can actually hold without corrupting data?

Answer 1

If the memory card is fake and only stores about 4gb, then it can't "go back" to 32gb since it never had that much space to begin with. If it was partitioned, you could repartition and reformat.

Check this answer for more information.

And to avoid losing the data on it, you'll need to back it up somewhere else BEFORE you reformat it.

Answer 2

These fake-capacity cards are made with the poorest quality components, just good enough to store a limited amount of data for a short time. I would not trust any such card to store data reliably, even at its true tested capacity.

Your best bet therefore is to try to get a refund from the seller.

Your second best bet, for the same reason, is to throw the card away.