I have 2 DS cartridges that freeze on all DS/DSi's that I have actually attempted. I have actually attempted cleansing them with alcohol without adjustment. Exists any kind of means to repair them?
Is one of them Age of Kings?
That DS video game has a conserve video game bug that french fries the cartridge, making it pointless.
Try and also get a reimbursement at the store, if that does not function, speak to Nintendo.