Giorgi then joined the Imeretian pretender Prince Teimuraz and duke of Racha in an Ottoman-sponsored revolt against Solomon, but they suffered defeat at Chkhari in 1768.
[1] In 1770, Solomon took advantage of the ongoing Russo-Turkish War of 1767–1774, crossed into Guria, where he defeated an Ottoman force marching from Batumi to Imereti, and, in 1771, deposed Giorgi in Mamia's favor.
The campaign ended in disaster for the Georgian rulers in March 1784, resulting in Guria's permanent loss of the Kobuleti area to the Ottoman Empire.
Later that year, following Solomon's death, Giorgi Gurieli supported David II's bid for the crown of Imereti and fought the Ottoman-supported pretender, Prince Kaikhosro Abashidze.
Giorgi ruled Guria for more years until 1788, when he, already seasoned and weary of political instability in his principality, abdicated in favor of his eldest son, Simon II Gurieli.