23. August 2014 00:08 by Jerry
It's a known issue that audio is not working on FOSCAM FI9821W V2 even with the latest firmware. More info could be found on this post:
If you are interesting in applying the patch as mentioned at the end of the post above, you can download it here and uploaded at patch update:
I believe this patch will be shipped in future firmware update eventually, so if audio is working for your camera, there is no need to update the patch.
Update: the patch is reported by a Foscam 9821P user that it's also working on 9821P