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Unable to upgrade firmware
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complex1 Offline
3CX Adv. Cert. Engineer

Posts: 1,536
Joined: Jan 2014
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Post: #2
RE: Unable to upgrade firmware
(02-14-2018 01:25 PM)bluetel Wrote:  Hello

we encoured problem. It's unable to upgrade firmware. Phone reboot and it's the same firmware.

we want to install the last



A possible cause:
Your phone is locked to the VoIP provider and they decide the firmware release.

E.g. you upgrade the firmware and after the reboot, the phone check for new firmware and the provider downgrade the firmware.

Please check if the phone is locked to the provider.

Hope this will help.

Kind regards,

I am not an employee of Yealink.
Dutch is my native language, not English. Apologies for my imperfect grammar.
Please do not send unsolicited PM messages. I will not answer them.
02-14-2018 03:22 PM
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Messages In This Thread
Unable to upgrade firmware - bluetel - 02-14-2018, 01:25 PM
RE: Unable to upgrade firmware - complex1 - 02-14-2018 03:22 PM
RE: Unable to upgrade firmware - bluetel - 02-14-2018, 03:28 PM
RE: Unable to upgrade firmware - complex1 - 02-14-2018, 09:18 PM
RE: Unable to upgrade firmware - bluetel - 02-26-2018, 01:27 PM

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