I recently got hold of a refurbed T48S that has firmware version 66.9.0.66 installed.
The firmware versions available via Yealink and 3CX - namely 66.85.0.5, 66.86.0.15 and 66.86.0.160 do not upload to the phone successfully despite numerous attempts using the web interface for the phone.
Each time the phone says 'skipped update' despite starting at the oldest firmware I can find on Yealink - 66.85.0.5
Several factory resets and provisioning via a hosted test bed 3CX v.20 still does not enable any form of firmware upgrade and the same error each time.
Does anyone know where older firmware for the T48S resides beyond what is currently available on Yealink/3CX?
I'm assuming there has to be several jumps between 66.9.0.66 and 66.85.0.5 thus any help in locating these is much appreciated.
The firmware versions available via Yealink and 3CX - namely 66.85.0.5, 66.86.0.15 and 66.86.0.160 do not upload to the phone successfully despite numerous attempts using the web interface for the phone.
Each time the phone says 'skipped update' despite starting at the oldest firmware I can find on Yealink - 66.85.0.5
Several factory resets and provisioning via a hosted test bed 3CX v.20 still does not enable any form of firmware upgrade and the same error each time.
Does anyone know where older firmware for the T48S resides beyond what is currently available on Yealink/3CX?
I'm assuming there has to be several jumps between 66.9.0.66 and 66.85.0.5 thus any help in locating these is much appreciated.
