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T21P E2 firmware upgrade - Printable Version

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T21P E2 firmware upgrade - janp - 01-27-2024 02:43 AM


I have a T21P E2 VoIP phone, which I would like to upgrade to a more recent firmware.
Current firmware is:
Firmware Version
Hardware Version

I downloaded firmware version T21P_E2- from Yealink support website.
I tried to flash the phone twice, but it didn't upgrade to a more recent firmware.
It stops at the message:
New firmware is installing... (on the phone LCD screen).

I left it idle for 1 hour, to not break the flashing process, but successfull flashing didn't work.

Do I need another firmware? How can I upgrade the firmware properly?