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Here you can download the latest updating firmware, complete user manual and other useful information and tools to keep the product in the best working state.X7 FW1.3 X7 FW1.4 X7 FW1.5 X7 FW1.8 X7 DLNA Usage Guide X7 Complete User Guide X7's USB DAC driver X7 FW1.91 X7 FW2.0 X7 FW 3.3.0 X7 FW3.3.1 X7 FW3.3.2 X7 FW3.3.3 X7 FW3.3.4 FiiO Music-v3.4.1