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  1. Grandstream GXP2140 Firmware

    Thats all well and good but the phones are randomly dropping calls. I have tried to download the firmware from the 3cx site for this unit and have tried to upgrade (in my case down grade) the firmware but the phone stays at version 48. I did a manual firmware where you select the file and it...

  2. Grandstream GXP2140 Firmware

    I purchased new phones and they have verion.48 firmware on them. The 3cx website says version .35 so I downloaded the version 35 and told the phone to update firmware. Selected the file from 3cx which should be version 35. The phone says it is updating but reboots and still has version 48. This...
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