[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
complex1 Offline
3CX Adv. Cert. Engineer
*****

Posts: 1,392
Joined: Jan 2014
Reputation: 40
Post: #2
RE: cannot upgrade or downgrade from x.83.0.55 firmware
(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.

Hi,

What you can try is to download the firmware from the 3CX site and do a manual update into the phone(s).
The 3CX supported firmware can be download from here:
https://www.3cx.com/support/phone-firmwares/

Please do not forget to reset the phone to factory default, by long press the OK button, after you have upgraded the phones.

Hope this will help.

Kind regards,
Frank.

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.
10-23-2019 05:51 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 - complex1 - 10-23-2019 05:51 PM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Yealink T41S firmware kosif 0 607 12-19-2022 08:52 AM
Last Post: kosif
  T46S will not upgrade 79schultz 1 935 10-12-2022 03:11 AM
Last Post: complex1
  T42S unable to update firmware brianstoiber 6 2,903 09-30-2022 05:31 PM
Last Post: complex1
  Yealink T48s Firmware update failed dangmoss 2 4,479 02-19-2022 03:09 AM
Last Post: dangmoss
  Problem Change Firmware T48s from SFB to SIP Lars Maschke 2 4,090 01-14-2022 10:22 AM
Last Post: kumagera
  Need to remove custom Fonality firmware 1CCT 16 31,245 05-03-2021 08:24 PM
Last Post: kmconklin
  SIP-T46s Bricked after latest firmware update. daniel.broome 2 6,337 04-27-2021 11:39 AM
Last Post: daniel.broome
  OEM Firmware change NotKnown 1 4,345 04-14-2021 07:41 PM
Last Post: complex1
  EHS36 Not answering / upgrade lonvoice 7 7,174 03-09-2021 09:46 PM
Last Post: Yisroel_MongoTEL
  documentation and firmware T43u jmooo 0 3,421 02-18-2021 02:23 AM
Last Post: jmooo

Forum Jump:


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

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