loud pops after last firmware and mcu update

[Koen]

Hi Koen,
If you get a chance to test it, please let me know if it works fine with the elder firmware.
Thank you.

hi Cao Wei, 

yesterday I have downgraded the mcu firmware to 2.5 and left Xmos firmware at 3.30.
after unplugging usb there was a loud pop when the dac went into stand-by modus.

today or tomorrow I will downgrade the Xmos firmware and test again.

cheers