Firmware for HT801/HT802/HT812/HT814/HT818 released as official



Dear Grandstream Customers,

Firmware for HT801/HT802/HT812/HT814/HT818 is now released as official.

Here is the link for the HT801/HT802 release notes:

Here is the link for the HT812/HT814 release notes:

Here is the link for the HT818 release notes:

The firmware and release notes can be downloaded from:

Please contact us should you have any issues. Thank you for your support for Grandstream products.

Technical Support
Grandstream Networks, Inc.



On the HT801 we had to downgrade of all of adapters to as faxing stopped working.
I’m not sure if it’s related , but we were using Asterisk 13.32.0.
The call would only seem to last for about 40 secs.
This was a problem that occurred right after the upgraded on 12-15+ clients across many locations.
All Faxes are sent over routed ip and were working previously on

I’ll update more tomorrow if the problem goes away by downgrading the firmware.

Asterisk would simply reply with:
The fax file is empty or cannot be converted to TIFF format.