Step1: Preparing the Firmware and other Resource Files
You’ll need the CP960.Rom, CP960.bin, and CP960.rfs.You can download CP960.rom (73.20.0.30) here: (USB mode)
https://support.yealink.com/en/portal/docList?archiveType=software&productCode=9be13381cbc24e80
After download, don’t forget to rename the file’s name to ‘CP960.rom’, the file name of the firmware used for recovery mode is strictly required. And the CP960.bin and CP960.rfs you can download it at this link
https://support.yealink.com/support-service/attachment/downLoadFile?fileCode=b9e0661b784e7948.
To use the correct .bin and .rfs files, you need to check your phone’s serial number first. Please read the ‘Readme.pdf’ first, it contains all the important infor I want to tell you.
Please check these two files name are correct or not after download. Or you need to rename these two files' name to ‘CP960.bin’ and ‘CP960.rfs’.
Step2: Use a USB flash drive to recovery your phone
Put the CP960.Rom, CP960.bin, and CP960.rfs.to the root directory of your USB flash drive, and your USB flash drive should be FAT32 format, then insert the USB flash drive to the CP960 phone, then follow the steps below to reboot and select the USB mode. The procedures are shown below:
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