In the now-common pattern, Akish’s sons rebel against him, and he loses the kingdom. This time, however, there is so much destruction that Akish’s sons do not rule, but the kingdom is restored to Omer.
Omer “began to be old.” As with the typical pattern, after that statement, we have the anointing of a new king: Emer. Emer appears in the king list in Ether 1, but Jared and Akish do not, even though both ruled.