27 June 2023
Yealink W52 – Firmware Upgrade Base Firmware Download the base firmware and extract the zip file – http://support.yealink.com/attachmentDownload/download?path=upload%2Fattachment%2F2015-7-4%2F6%2F5cadf3c1-5e00-4c37-9a04-aaa6693b933e%2F25.73.0.40.zip Browse to the…