AUDUSD broke above 0.7875 key resistance, indicating that the downtrend from 0.8124 had completed at 0.7732 already. A further rally would likely be seen in the coming days and next target would be at 0.7986.
Support is located at the rising trend line on the 4-hour chart, only a clear break below the trend line support would indicate that the uptrend is completed, then another fall towards the resistance-turned-support trend line on the weekly chart could be seen.