Yealink Yealink SIP-T20P User manual

Recovery mode on Yealink IP phones
1
Overview
This guide shows how to use recovery mode to get your phone ready when it fails to
start up. Yealink IP phones support recovery mode using TFTP protocol only.
Generally, when a Yealink IP phone is powered and connected to the network
properly, it will start up successfully and get ready for you to use. In case, the IP phone
is accidentally powered off when upgrading, the system data in the flash may be
damaged and this make the IP phone fail to start up. Therefore, we strongly
recommend that do not unplug or remove the power when the phone is updating
firmware or configurations.
Getting started
Before using recovery mode to get your IP phone ready. You should obtain the
firmware of the IP phone and rename it, install a TFTP download server.
Preparing the firmware resource file
You can ask your system administrator for the firmware or download it from Yealink
web site at: http://www.yealink.com/support.
The file name of the firmware used for recovery mode is strictly required. For example,
to use recovery mode on SIP-T28P IP phones, you must rename the file name of the
firmware as T28.rom. For more detail about the file name of the firmware
corresponding to the phone model, refer to the following table:
Phone Model
The Resource Files Required (case-sensitive)
SIP-T20P
T20.rom
SIP-T22P
T22.rom
SIP-T26P
T26.rom
SIP-T28P
T28.rom
SIP-T32G
T32.rom and T32.bin
SIP-T38G
T38.rom and T38.bin
SIP-T60P
T60.rom
SIP-T65P
T65.rom
SIP-T68
T68.rom and T68.bin
VP530
V4X.rom, V4X.bin and V4X.rfs

Recovery mode on Yealink IP phones
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Phone Model
The Resource Files Required (case-sensitive)
T19
T19D.rom, T2XD.bin and T2XD.rfs
T21
T21D.rom, T2XD.bin and T2XD.rfs
T41
T41.rom, T41.bin and T41.rfs
T42
T42.rom, T42.bin and T42.rfs
T46
T46.rom, T46.bin and T46.rfs
W52
W52P.rom, W5X.bin and W5X.rfs
Note
Configuring the TFTP Server
This session shows how to configure a TFTP server for windows using tftpd32 application.
You can download the tftpd32 application from web at:
http://tftpd32.jounin.net/tftpd32_download.html. If there is a TFTP server existed in your
network, you can skip this session and go to next.
Procedures:
1. Double click the tftpd32.exe to start the application.
2. Click the button to locate the TFTP root directory from the local system.
3. Upload the renamed firmware file to the TFTP root directory.
4. Select the local IP address from the pull-down list of Server interface.
For W52, You need to use another different way to configure it. Because there is no LCD
on BASE. Please click this link: Recovery Mode on W52P

Recovery mode on Yealink IP phones
3
Using Recovery Mode on Yealink IP Phones
This section shows how to perform recovery mode on Yealink IP phones step by step.
The following screenshots take the SIP-T28P IP phone for reference.
Procedures:
1. Press and reconnect the power adapter to trigger the recovery mode.
Follow the recovery mode wizard on the phone LCD screen to complete. Enter
the parameters’value of IP address, subnet mask, default gateway,TFTP server
address in the corresponding fields.
2. Press OK to complete the recovery mode.
The IP phone will download and upgrade the firmware from the TFTP server. After
upgrading, the IP phone will initialize successfully and get ready for use after
starting up.
Screenshot of the LCD screen when upgrading successfully for reference:
If the IP phone upgrades unsuccessfully, the phone LCD screen will indicate the failure.
You need to check and make sure:
1. The connectivity between the TFTP server and the IP phone works well.
2. The firmware file is correctly renamed and uploaded to the root directory of
TFTP server.
3. Repeat the recovery mode procedures to try again.
Screenshot of the LCD screen when upgrading unsuccessfully for reference:
Note
…. Initializing ….
Please Wait
Welcome
….Update Fail ….
Please reboot
Welcome
1. IP Address:
2. Netmask:
3. IP Gateway:
4. TFTP Server:
10. 2. 11.124
255.255.255. 0
10. 2. 11.254
10. 2. 11.123
You can also press the soft key (the second from the left on the phone) and reconnect
the power adapter to trigger the recovery mode on Yealink VP530 IP phone.

Recovery mode on Yealink IP phones
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Getting started for W52P
Before using recovery mode to get your W52P ready. You should obtain the firmware
of the IP phone and rename it, install a DHCP server and TFTP download server.
Configuring the DHCP Server for W52P
This session shows how to configure a DHCP server for windows using tftpd32
application. You can download the tftpd32 application from web at:
http://tftpd32.jounin.net/tftpd32_download.html. If there is a DHCP server existed in
your network and have the same network segment like below, you can skip this session
and go to next.
Parameter
Default Value
Gate Way IP
192.168.0.1
Net Mask
255.255.0.0
DECT IP
192.168.0.100
TFTP Server IP
192.168.0.23
1. Configure the local IP address of PC with 192.168.0.1.
2. Double click the tftpd32.exe to start the application.
3. Click the button to configure the DHCP server.
4. Configure the DHCP server like below and then press OK to save the modification.

Recovery mode on Yealink IP phones
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Configuring the TFTP Server for W52
This session shows how to configure a TFTP server for windows using tftpd32 application.
You can download the tftpd32 application from web at:
http://tftpd32.jounin.net/tftpd32_download.html. If there is a TFTP server existed in your
network and the IP address is 192.168.0.23, you can skip this session and go to next.
Procedures:
1. Configure the local IP address with 192.168.0.23 in another PC.
2. Double click the tftpd32.exe to start the application.
3. Click the button to locate the TFTP root directory from the local system.
4. Upload the renamed firmware file to the TFTP root directory.
5. Select the local IP address from the pull-down list of Server interface.

Recovery mode on Yealink IP phones
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Using Recovery Mode on W52
This section shows how to perform recovery mode on W52 step by step.
Procedures:
1. Press and reconnect the power adapter to trigger the recovery mode and
then wait for about 10 minutes. You can pay attention to the log of TFTP server.
Make sure that Base have asked for the files.
2. Try to open the WEB UI with the IP address 192.168.0.100 via PC.
3. Check the firmware version in Status.