Fanvil X4U X5U X6U - stuck at 3CX logo when booting

[NWIT Admin]

I have 12+ Fanvil phones (X4U, X5U, X6U v1 and v2 via PoE) that have 'gone bad'. At one site, there is is a 50% failure rate in just three weeks. We come in every Monday to find three or four phones stuck at the 3CX logo screen...a reboot immediately lights BLF (never flashes to press # to enter Post Mode) and illuminates screens with a 3CX logo but never a chance to enter into Post Mode. There have been other threads on this topic and my issue is the exact same as m.nussbaumer... whom I have reached out to in private message but no response.

Fanvil support told me to contact the reseller about warranty or otherwise they are to be considered defective. Warranty is out, I believe I will have to be out on Fanvil.

I don't think the phones are truly defective, but there is definitely a problem that I cannot get any assistance in solving.

Is there anybody out there that may have come across this issue and a way to fix it besides using them as paper weight?

My PoE switch seems fine, I have replaced all 10 Fanvils with Yealink and never a problem, but my Fanvil phones are dying off every weekend. Perhaps in a few more weeks I'll have all Yealink and no more problems...

Any help is greatly appreciated.

I am running 3CX hosted v20U4.

 

[Fabian Jsn]

what Fanvil Support said is correct in my opinion, you can claim the warranty (if still under warranty). then have you tried using the phone's default adapter or another adapter that has a voltage that matches the phone?

 

[AWS2P]

I'm encountering the same behavior on one location with Fanvil phone randomly tey become unregistred without doing anything. On Saturday it was fine and on Monday no more phones are registred but the shop was closed until monday morning.

 

[JulienI]

Hi,

I have the same issue with 2 X7C phones that died in the last 3 months, just after a reboot. Stuck at 3cx logo with no way to go in POST mode. They are out of warranty (bought in late 2021).

 

[Fanvil Technical Support]

If cannot enter post mode, then you cannot restore the phone to normal. If you have other previously purchased XU series phones, it is recommended to upgrade to the version in the link below to avoid this problem:fix_stuck_boot_logo

 

[JulienI]

If cannot enter post mode, then you cannot restore the phone to normal. If you have other previously purchased XU series phones, it is recommended to upgrade to the version in the link below to avoid this problem:fix_stuck_boot_logo

Do you have the same fix for X7C model ? I have some running on 2.4.12 firmware and if I could prevent this known issue to happen it could be fine. Thanks

 

[Fanvil Technical Support]

Do you have the same fix for X7C model ? I have some running on 2.4.12 firmware and if I could prevent this known issue to happen it could be fine. Thanks

See the following link for the version of X7C. We have been communicating with 3CX, and 3CX will update the versions in the future. X7C-fix stuck issue

 

[apitsos]

I am having the same issue with a Fanvil X5U. It stacks on the 3CX logo and doesn't react on anything. None of the solutions provided above worked. Device is out of warranty. Any idea?

 

[Fanvil Technical Support]

Hi apitsos，We apologize for the inconvenience. There is no effective recovery method in this situation. Please upgrade your other devices to the latest 3CX certified version to avoid this issue recurring.