Aug 5 (Reuters) - Asian firms continued to receive earnings upgrades in July, highlighting sustained hopes of a recovery and optimism that equity prices will be bolstered in the second half of this year. According to Refinitiv data, Asian companies" forward 12-month earnings estimates were lifted by 1.9% in July, which was the 13th consecutive profit upgrade by analysts. Goldman Sachs, which expects 35% EPS growth for MSCI Asia Pacific ex-Japan this year, said continued robust sales growth and margin recovery will be the drivers of stronger earnings. "We expect 8% regional index upside in the second half of the year, but the path may be bumpy given the large number of macro concerns," it said. After a rally in the first half of this year, Asian shares faltered in July, hit by rising cases of the more infectious Delta variant of COVID-19 in the region. Australian companies led the region"s upgrades in July as analysts raised their forward 12-month profit estimates 11.5%. Analysts also raised their earnings estimates for Japanese, Taiwanese and South Korean firms by 2.4%, 2.3% and 0.8% respectively. "Japanese corporates have piggy-backed on the back of rising global trade. There are still potential upside surprises from inventory restocking, an upswing in global capex and a very sharp turn-around in European growth," brokerage Jefferies said in a report. South Korean exports jumped to a record high in July, boosted by overseas demand for chips and biohealth products. According to a Reuters poll, Taiwan"s exports have likely risen for a 13th month as the global economy traces its path back to recovery with sustained work-from-home trends. read more The earnings upgrades also came on the back of solid second-quarter results posted by Asian companies so far. Refinitiv data showed 64% of companies that have announced second-quarter results have beaten the forecasts of analysts. Meanwhile, China, Thailand, Philippine and Malaysian firms faced earnings downgrades in the last month.