If your credit history isn’t all that long or spotless, adding a credit account with a long, positive credit history to your report will certainly boost your score but how do you all of a sudden add an old account to your credit report?
About How to Boost Your FICO Score
Good Credit Scores takes patience and persistence and there are quite a few ways to legitimately give your score a boost when needed. Over the long haul, you'll be rewarded with a solid FICO Score.