[YMCS/YDMP Free Trial Program]Yealink would like to offer Free Trial Program of Yealink device management service for our current eligible customers. You can see the details below.
https://www.yealink.com/ydmp-freetrial-2020


Post Reply 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
cannot upgrade or downgrade from x.83.0.55 firmware
Author Message
bardentech Offline
Junior Member
**

Posts: 2
Joined: May 2019
Reputation: 0
Post: #8
RE: cannot upgrade or downgrade from x.83.0.55 firmware
(12-02-2019 08:26 PM)kenhoosen Wrote:  
(12-02-2019 06:22 PM)bardentech Wrote:  
(10-23-2019 03:36 PM)kenhoosen Wrote:  We are using 3CX and have recently updated 3CX to version 16. We have several Yealink phones that are on version x.83.0.55 firmware and 3CX states that this version is unsupported. When I attempt to update the phones to a more current firmware, I get a firmware update failed message. To troubleshoot the issue, I have tried both upgrading and downgrading the firmware but, it fails every time. Phone models that we have this issue with are T41S and T21P_E2.

Anyone else have this issue (and possibly a solution)?

Thanks.

I'm having this issue right now. Did you get it resolved?

Yes. See the previous reply from mujizac.

I did see that. However, that solution didn't work for me. As it turns out, 3cx was downgrading the firmware back to 66.83.0.55 after I manually updated it to 66.84.0.35. I had to first use 3cx to upgrade the firmware, which it wouldn't do but it would provision it to receive it after the 84.0.35 upgrade was manually done.
12-02-2019 08:31 PM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 


Messages In This Thread
RE: cannot upgrade or downgrade from x.83.0.55 firmware - bardentech - 12-02-2019 08:31 PM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Unable to update Firmware from 66.83.0.55 Tularis 0 491 09-19-2024 09:11 PM
Last Post: Tularis
  newest firmware for T4XS units causes bootup loop davedogmoore@gmail.com 6 4,802 09-19-2024 03:12 PM
Last Post: Masyn_Yealink
  Auto Provision Firmware stratos 3 12,272 06-24-2024 05:10 PM
Last Post: wuesten_fuchs
  Firmware Upgrade T46S not working SamSam 3 2,750 06-05-2024 01:25 AM
Last Post: augicom
  SIP-T46G Need firmware update instructions RobbyK 2 3,186 01-11-2024 10:52 PM
Last Post: RobbyK
  Firmware T42s Raimundo 1 3,105 11-23-2023 06:45 PM
Last Post: Darsh
  T41S FIRMWARE 66.9.0.80 vers 66.86.0.5 DANJEAN 1 3,477 08-23-2023 01:00 AM
Last Post: complex1
  Yealink SIP-T40P Firmware UnitedTech_Support 1 3,668 05-05-2023 08:07 PM
Last Post: complex1
  T48U Custom Firmware Upgrade to Official Friendly 0 3,200 03-29-2023 01:20 AM
Last Post: Friendly
  Yealink T41S firmware kosif 0 3,111 12-19-2022 08:52 AM
Last Post: kosif

Forum Jump:


User(s) browsing this thread: 1 Guest(s)

Contact Us   Yealink   Return to Top   Return to Content   Lite (Archive) Mode   RSS Syndication