Credit Scores take months / years to establish. I don't think there is any "instant" way to raise a score in one months time. The only thing that MIGHT work in your favor for getting approved is have a large down payment (20% or more) to put on your purchase. No guarantee though. You should discuss that with your bank. You should also do a credit check from all three reporting companies to see if there is anything on the reports that is inaccurate.
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