Grandstream WP820 IP Phone Firmware 1.0.5.5

ENHANCEMENT

- Added battery status [BATTERY STATUS]
- Added export battery log [EXPORT BATTERY LOG]
- Added recording animation effects to the system diagnostic audio loopback
- Added Bluetooth interface on web UI [BLUETOOTH WEB UI]
- Added Wi-Fi Channel Mode [WI-FI CHANNEL MODE]
- Added visual voicemail function [VISUAL VOICEMAIL]
- Added custom wallpaper support on web UI [CUSTOM WALLPAPER]
- Added OpenVPN mode [OPENVPN MODE]
- Added Wi-Fi provision via USB [WI-FI PROVISION VIA USB]
- Added config file provision via USB [CONFIG PROVISION VIA USB]
- Added action URL notify when SAFE Panic Alarm triggers [ACTION URL FOR SAFE/PANIC CALL]
- Added web feature for lock screen [LOCK SCREEN ON WEB UI]
- Added UCM conference screen to show participants count info
- Added make-call warning prompt for CSTA.
- Added additional error info when check new firmware
- Added language support for PTT setting page
- Added phone support for clicking ok button to accept call
- Added send message in contacts UI [SEND MESSAGE TO CONTACTS]
- Added speed dial option for multi-purpose key [SPEED DIAL VIA MULTI-FUNCTION KEY]
- Updated time format of call log interface
- Updated UI of call log details interface
- Updated MAC header format and user-agent mac info
- Updated 802.1x Wi-Fi connect UI
- Updated alarm UI
- Updated contacts UI
- Updated the UI of PTT/Paging send/receive screen
- Updated CPE to 1.0.1.128 version
- Removed weak cipher algorithms for security
- Optimized channel scanning of WPA
- Increased phonebook server path character limit

BUG FIX

- Fixed Remove input method in date setting and time setting interface
- Fixed The call transfer interface loses its cursor when cursor moves
- Fixed The configuration is not changed when the time shift is turned on, and the call shift icon is not present in the Panel
- Fixed The default time of call transfer is error in 12-hour format
- Fixed Web contact sorting has extra "..."
- Fixed Adding Video Preview ability with 3rd Party Door System (2N IP Intercom)
- Fixed "Modify Network" interface clicks back to the wrong interface
- Fixed WP820 will not register with the sip server assigned in DHCP Option 120, after trying to modify the QOS parameter
- Fixed Set the interface state list recycled view the change not comprehensive
- Fixed Brightness option is blocked in large fonts
- Fixed In speed dial interface, the account and contact name order in reverse
- Fixed After switching languages/fonts, the notification/quick setting interface has no cursor
- Fixed There is no cursor in the setting page after the device start
- Fixed When the "Transfer on 3 Way Conference Hangup" is checked, the emergency intercom will not be accessed
- Fixed Ping should support the input of IPv6 address
- Fixed The # key dialing option for account 2 is invalid
- Fixed Cannot add new GDS by issuing p-value
- Fixed Web access set to HTTPS, port can be set to 80
- Fixed In the PTT paging, if a call is made to a contact and the number does not exist, the number line status is not displayed
- Fixed IPv4 and IPv6 should be set up independently
- Fixed Custom ring name is too long when the line is displayed
- Fixed The "Multicast address" input box cursor is incorrect
- Fixed The soft button interface lacks subordinate signs
- Fixed Bluetooth device name is not replaced with "..." after more than ten characters
- Fixed Unable to connect after switching security when add SSID
- Fixed LCD part text display English when language is Chinese traditional
- Fixed Bluetooth "Phone audio/Media audio" prompt option should be modified
- Fixed The choice of LCD account status view should be deleted
- Fixed The device cannot connect to OpenVPN after setting the wrong OpenVPN username or password and changing it to the correct username password
- Fixed It will send all packets to tun0 after connecting OpenVPN
- Fixed Fix the Wi-Fi switch state can't sync with Wi-Fi actual state at switch screen
- Fixed The account status displays abnormal
- Fixed Firmware issued by GDMS caused the device to be disconnected
- Fixed The default value of Periodic Inform Interval should be 300s
- Fixed The account could not receive SMS message after the SIP message was started
- Fixed When select the network protocol/band, click the power button and the Wi-Fi will not open automatically
- Fixed The password option should not appear when 802.1x-EAP method is TLS
- Fixed Device will not parse the "RTCP Monitoring Server" domain name
- Fixed Turning on or off "Bluetooth headset mode" can affect the option of "Bluetooth visibility"
- Fixed Both sides turn on "Use the First Match Code in 200OK SDP" and "Turn on the Forward Error Correction of Audio" then audio is silent
- Fixed Device enable HFP, make a call and no voice
- Fixed After connecting the Bluetooth headset, you can access the 3.5mm headset when you dial, and the earphone cannot hear the ring back tone
- Fixed Disabled option2/42 still write 2/42 value
- Fixed Traceroute cannot return complete results
- Fixed Devices on GDMS do not display DND status
- Fixed After manually connecting 2.4Gwifi, it will automatically switch to 5Gwifi
- Fixed The device connects to 2.4Gwifi rather than 5G Wi-Fi when uses 2.4G&5G(probability)
- Fixed Delete two sip accounts at the same time on GDMS, and the device only cancels the registration of one account
- Fixed When Wi-Fi is off, network information still retains Wi-Fi information
- Fixed In the standby interface, the first dial tone is emitted from the speaker
- Fixed It has no voice after make call by IPV6
- Fixed When the firmware update detects if there is a new version, it should be prompted
- Fixed Auto Provisioning not fully update
- Fixed The recipient is not visible when jump from contacts to text messages
- Fixed Access contacts during the call then call a number that is on the phone and the prompt is incorrect
- Fixed Unable to move cursor forward while editing message recipient
- Fixed Text message interface and text message details interface options have translation error
- Fixed The option button in meeting interface can't be clicked
- Fixed The device is always connected to 2.4G network after recovery
- Fixed The device displays messy code when Option 120 is ip address
- Fixed Device cannot get IP when DHCP server configures option 242
- Fixed When outbound proxy and secondary outbound proxy are domain name address, DNS parsing will not use SRV mode
- Fixed CN country code does not support the 12 and 13 channels
- Fixed VPN IP displays error in the network state page
- Fixed No weak signal toast when DTU screen timeout during the call
- Fixed Equipment for connection to the 3.5 mm earphone, long press the volume (+), high volume remind box pops up many times
- Fixed The tips of "Wi-Fi security" is wrong
- Fixed Click "return" button in the authentication window and it don't return to the Wi-Fi list interface
- Fixed When the device is connected to a 3.5mm earphone and the volume (+) button is pressed, the high-volume reminder does not pop up.
- Fixed DTU does not connect SSID when click "connect" button(probability)
- Fixed Web UI "cannot get trace list"
- Fixed Music did not come out of the speaker after canceling the A2DP headset's multimedia connection
- Fixed When there is a second call, cannot answer the call using the Bluetooth headset after hang up the current call
- Fixed Can't answer the second call when use Bluetooth
- Fixed LCD and web's Wi-Fi roaming information display inconsistencies
- Fixed Reboot tips message is displayed incorrectly
- Fixed One-click debugging is unavailable
- Fixed Unable to edit GDS
- Fixed Chinese translation of "enable call waiting" option is wrong
- Fixed Auto end PTT speaking if line is hold
- Fixed Fix the logic of changed font size in setting
- Fixed Existing contacts will still show "Add to local contacts"
- Fixed Toast prompt cannot be cleared by clicking any button when switching accounts
- Fixed The loudness of the speaker after connecting to the Bluetooth headset is inconsistent with when not connected
- Fixed After the multicast talkback hold/unhold, the call does not ring the call waiting tone.
- Fixed The volume of ringtone is different with connect BT
- Fixed Snooze countdown still triggers security monitoring when it's in the background
- Fixed There is no Wi-Fi alert after connecting WIFI Portal when the signal is weak
- Fixed Device can't scan 5G SSID (probability)
- Fixed Device cannot join multicast after turning off DND
- Fixed When "Custom SMS Reply Content" is not empty, button display error
- Fixed "Speed Dial" interface title shows error
- Fixed 1-level domains are not accepted under SIP server field
- Fixed P-value 8501 is abnormal when upload another device’s configuration
- Fixed The prompt is wrong in firmware upgrade detect
- Fixed Web page always show "Detecting...Please wait" when click detect button
- Fixed After modify door system ringtone, add new door system, will default select this ringtone
- Fixed Web "Contact Group" has untranslated prompts
- Fixed Unable to click the acceptance clause popup
- Fixed Detect Upgrade don't download the config file
- Fixed Daily test produces gs_phone core file
- Fixed Setting incorrect IPv4 address causes core dump 

About VoIP Phone Updates:

Firmware updates for VoIP Phones are very important as they usually contain many bug fixes, add new features and updates, as well as add additional security features.

One of the main problems users come across when attempting to upgrade their VoIP Phone is that their device may be locked to a certain Carrier. Adding an unlocked version of the firmware may cause the device to stop working on certain networks. This operation may void your carrier warranty and, as such, is not recommended.

Before downloading, make sure that you have selected the appropriate firmware for your device and that the update supports the VoIP service provider you use.

Generally, it is important to upgrade older firmware in sequence (v1 to v2 to v3) and so on, because many manufacturers don't launch standalone update packages.

Although using beta release firmware packages is tempting, it can prove to be quite risky as well. If you choose to try beta release updates, please read the detailed firmware notes and make sure that you have the possibility to revert to an older and more stable version in case the beta turns out faulty.

If you feel that this update can improve the functionality of your VoIP Phone, please use the download button and follow the installation instructions.

  It is highly recommended to always use the most recent driver version available.

Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer.