Grandstream Networks HT801 User Manual page 21

No major changes.
Firmware Version 1.0.35.4
No major changes.
Firmware Version 1.0.33.4
No major changes.
Firmware Version 1.0.31.1
No major changes.
Firmware Version 1.0.29.8
No major changes.
Firmware Version 1.0.27.2
No major changes.
Firmware Version 1.0.25.5
No major changes.
Firmware Version 1.0.23.5
No major changes.
Firmware Version 1.0.21.4
Added support for "Play Busy Tone When Account is unregistered". [Placing a phone call]
Firmware Version 1.0.19.11
No major changes.
Firmware Version 1.0.17.5
No major changes.
Firmware Version 1.0.15.4
No major changes.
Firmware Version 1.0.13.7
Added the support to verify if configured Gateway is on the same subnet as the configured IP address.
Firmware Version 1.0.11.6
No major changes.
Firmware Version 1.0.10.6
Add support for codec G722. [HT801/HT802 Technical Specifications]
Firmware Version 1.0.9.3
No major changes.
Firmware Version 1.0.8.7
Added support for upgrade device via [FTP/FTPS] server. [Upgrade Protocol] [UPGRADE PROTOCOL]