Elsewhere, benchmarks tended to follow local factors resulting in Tokyo closing up 1.
40 percent and above the critical 17,000 points mark while Sydney and Wellington registered solid gains to close at record highs.
The flip-flop and a steady performance on Wall Street overnight had investors chasing bargains following Tuesday's sell-off amid chaos in Thailand and echoes of the 1997 Asian financial crisis.
"The market is up on a recovery from yesterday's (Tuesday's) shocker," said Gabriel Yap, a dealing director with Phillip Securities in Singapore.
"It's not something that will have a systematic hold on the market.
"
Late Tuesday, Thai Finance Minister Pridiyathorn Devakula was forced into an embarrassing policy U-turn after an unprecedented 23 billion dollars was wiped off the value of Thai listed companies in one day.
The rout was triggered after the military-backed government imposed capital controls in an effort to check the increasing pressure a rising currency was putting on e