S.C. Code Ann. § 33-10-105: Amendment before issuance of shares.

(a) If a corporation has not yet issued shares, its board of directors or, if directors have not been named, its incorporators may adopt amendments to the corporation's articles of incorporation by a unanimous vote.

(b) If any amendment permitted by subsection (a) effects a material change in the articles of incorporation, subscribers not assenting to the amendment may rescind their subscriptions without liability, notwithstanding any contrary provision of the subscription agreement or Chapters 1 thru 20 of this title.