[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
kenhoosen Offline
Junior Member
**

Posts: 6
Joined: Aug 2017
Reputation: 0
Post: #1
cannot upgrade or downgrade from x.83.0.55 firmware
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.
10-23-2019 03:36 PM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 


Messages In This Thread
cannot upgrade or downgrade from x.83.0.55 firmware - kenhoosen - 10-23-2019 03:36 PM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Auto Provision Firmware stratos 3 10,707 06-24-2024 05:10 PM
Last Post: wuesten_fuchs
  Firmware Upgrade T46S not working SamSam 3 1,311 06-05-2024 01:25 AM
Last Post: augicom
  newest firmware for T4XS units causes bootup loop davedogmoore@gmail.com 5 2,366 06-04-2024 04:03 AM
Last Post: matthew@talkitpro.com
  SIP-T46G Need firmware update instructions RobbyK 2 2,086 01-11-2024 10:52 PM
Last Post: RobbyK
  Firmware T42s Raimundo 1 2,147 11-23-2023 06:45 PM
Last Post: Darsh
  T41S FIRMWARE 66.9.0.80 vers 66.86.0.5 DANJEAN 1 2,707 08-23-2023 01:00 AM
Last Post: complex1
  Yealink SIP-T40P Firmware UnitedTech_Support 1 2,760 05-05-2023 08:07 PM
Last Post: complex1
  T48U Custom Firmware Upgrade to Official Friendly 0 2,623 03-29-2023 01:20 AM
Last Post: Friendly
  Yealink T41S firmware kosif 0 2,653 12-19-2022 08:52 AM
Last Post: kosif
  T46S will not upgrade 79schultz 1 2,801 10-12-2022 03:11 AM
Last Post: complex1

Forum Jump:


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

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