It is possible to reinstate an installment agreement that is in default by correcting the issue that caused the default within 30 days. You can do this in several ways, such as: Paying any payments you missed. Providing any financial information the IRS requests.
You can send Form 9465 with the e-return, but the IRS must still approve the installment agreement form.
About Form 9465, Installment Agreement Request. Internal Revenue Service.