Q. 2) Re – See prior question 1242. What happens if one of the sheva brochos was said before the other, and the order was changed?

A. Be’er Heitev (E.H. 62: 1) quoting Ig’rois Horambam and other Poskim who also cite Maseches Kalah Rabossi (1: 1), assert that the order of sheva brochos in principle is not essential and when one brocho is mistakenly omitted, it can be recited later on.
However, Atzei Arozim (62: 1) mentions as an exception to the above rule, the two blessings finishing with yotzer haadam. He quotes the Talmud (Kesuvos 8a) that the reason for this two repetitive similar ending brochos is that there were two creations involved in making man. One before separating Adam from Chava and the other the separation itself, mentioned in the second one. Since there is an inherent order tho this two brochos, he maintains that having mistakenly said the second one first, you don’t recite the first one anymore since it was included already in the wording of the second one. Beis Avi (E.H. 3: 143) after debating at length if the second brocho includes the first, maintains in practice to follow the ruling of the Atzei Arozim.
Igrois Moishe (E.H. 4: 88) opinion was also not to recite anymore since we are lenient in sofek brochos, and we do not recite brochos when in doubt. Kerem Shlomo (17), Rivevos Efraim (O.H. 3: 156) and Nitei Gavriel (Nisuin 2: 95: 15) rule likewise.
However, Shita Mekuvetzes and Meiri (Kesuvos 8a) explain the repetitive yotzer haadam blessings as the first applying to Adam while the second refers to Chava. Following this opinion, Shulchan Aruch Hamekutzar (206: n. 549) maintains that the first brocho is essential and should be recited after the second.
Horav Shlomo Miller’s Shlit”a opinion is also not to recite the first brocho of Yotzer Haadam once the second one has been said.

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a