Yealink T46S 66.84.0.95 Firmware fails on upgrading

[Kenneth Hoyos]

Tried on several T46S and T42S systems through the admin Console, when tried manually, I get Update failed. Anybody else seen this????

 

[Saqqara]

Check out step 1 https://www.3cx.com/sip-phones/yealink-t4-series/

 

[Kenneth Hoyos]

Check out step 1 https://www.3cx.com/sip-phones/yealink-t4-series/

That did the trick, The phones are on 66.83.0.55 and it accepted the 66.84.0.35 firmware and then was able to update to 66.84.0.95 successfully.

 

[eddv123]

I am not sure if this is your exact issue however this jump issue can occur when you upgrade from version 15.5 to 16 without doing the interim upgrade.

Had this myself before, and had to manually apply. Luckily we use VPN mostly and you can use the WEB GUI button to upgrade the phones locally.