[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: #3
RE: cannot upgrade or downgrade from x.83.0.55 firmware
(10-23-2019 05:51 PM)complex1 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.

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.

I should have clarified myself. I originally attempted to update the firmware via the 3CX interface. But, it seemed to do nothing. So I proceeded to do multiple attempts at manual updates of the phones. I have tried the firmware provided by 3CX and multiple versions of firmware provided by Yealink. I've tried both, updating after the phone is provisioned, and after a factory reset.

I've done multiple searches to find an answer to this issue. I did find some other posts that mention what appears to be the same issue with x.83.0.55 failing an upgrade or downgrade. But, I have not found any solutions to the problem.

Thanks.
10-23-2019 07:32 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 - kenhoosen - 10-23-2019 07:32 PM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  T46G - firmware downgrade jgolinuc 1 645 08-07-2020 02:05 PM
Last Post: complex1
  T46S firmware 66.85.0.5 not holding properly crazytel 2 1,387 07-09-2020 06:55 AM
Last Post: CCP
  Need to remove custom Fonality firmware 1CCT 13 7,516 06-18-2020 05:51 PM
Last Post: wadeorigger
  T42G with firmware T42-29.83.0.120.rom compsos 1 1,092 02-03-2020 07:48 PM
Last Post: complex1
  T48 won't upgrade lonvoice 11 3,975 12-11-2019 04:08 PM
Last Post: lonvoice
  Firmware update failed, any options? srenton 2 6,878 07-31-2019 07:21 AM
Last Post: antoineg
  Updating Firmware on T42S DBM14386 3 3,432 07-24-2019 11:09 AM
Last Post: Babylonia
  T48G S4B firmware and WF40 wifi dongle noel_leahy 8 8,598 07-23-2019 06:04 AM
Last Post: Babylonia
  T48S after Firmware update to 66.9.0.80 no Downgrade possible? thomas.hauff 1 2,521 07-15-2019 03:06 PM
Last Post: East_Yealink
  EHS36 Firmware via T46G - User Name Password Richard242 1 1,495 07-12-2019 08:36 AM
Last Post: Travis_Yealink

Forum Jump:


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

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