[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.

Post Reply 
Thread Rating:
  • 1 Votes - 5 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Yealink T28P Firmware Upgrade Fails
Author Message
wish2have Offline
Junior Member

Posts: 1
Joined: May 2014
Reputation: 0
Post: #8
RE: Yealink T28P Firmware Upgrade Fails
Similar problem here. Also from the Netherlands.
I just have a nasty feeling about this now.
Happened with 2 clients

We have been given a batch of 12 Tiptel VP28 (KPN)...of which 3 pieces were defective out of the box. And 3 other showed defects within 48 hours. I found out the older hardware versions are just faulty.
50% failure rate is a bit high. I've convinced them to buy Cisco.

Another client had something similar. They had some Tiptels of which 4 out of 6 broke down within a week. So they opted to buy something else.
This customer was aware Tiptel and Yealink are similare hardware.

As the customer insisted on Yealink I let them buy a pair.
They got the T28P...Did a straight from the box firmware upgrade and..nothin'

It stinks the advice is to contact the dealer for firmware (although forum says to contact Tiptell...who in turn says to contact the dealer.)

I'm tempted to tell them I refuse to service any Tiptel, Yealink, Innovaphone. This is not the service level I expect from a German Company.

So what happened:

After an upgrade...no change in firmware.
I tried different versions of firmware even downgrading.
Even tried a stepwise upgrade (like mandatory with Cisco phones) but nothin' succeeded in reality.

Firmware Version
Hardware Version

During upgrade is mentions:
__Firmware updating ...
__Please do not power off!
__The operation is done!

Well no change after the upgrade at all...

Well found this post, gonna give it a shot....Dodgy...and that also didn't work out...
--> Security
--> Trusted Certificates
--> Only Accept Trusted Certificates
Set it to Disabled and then upgrade
(This post was last modified: 05-24-2014 03:54 AM by wish2have.)
05-24-2014 03:18 AM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 

Messages In This Thread
RE: Yealink T28P Firmware Upgrade Fails - wish2have - 05-24-2014 03:18 AM

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Firmware upgrade fails on T21P E2 p.pasquino@technology4you.it 0 1,318 11-02-2021 04:42 PM
Last Post: p.pasquino@technology4you.it
  T21P Stuck on "Initializing" - Recovery Mode Fails` YCMJamie 5 5,595 08-24-2021 07:04 PM
Last Post: YCMJamie
  T21P_E2 firmware 84.0.125 slow with VLAN GwenH 3 7,411 11-03-2020 11:01 PM
Last Post: complex1
  how to connect yealink T23G to mikrotik openvpn server m.taghavi 4 8,685 10-11-2020 11:31 AM
Last Post: bozko
  T26P Can not upgrade firmware martien.poels@bank2loyalty.com 2 6,208 09-21-2020 05:16 PM
Last Post: complex1
  T28P foward call doesn´t work with Tato 4 7,388 09-14-2020 03:49 PM
Last Post: complex1
  T28P LDAP Problem oguzhan 1 5,589 06-10-2020 01:14 PM
Last Post: beldimon
  default username/password not working after firmware upgrade tfrohling 3 33,245 02-15-2020 01:30 PM
Last Post: khalidnisar
  T23G Unable to obtain IP after upgrade Duncan 2 5,889 12-31-2019 10:58 PM
Last Post: Duncan
  Low volume yealink T21p miesvictor 2 5,344 12-05-2019 11:35 PM
Last Post: miesvictor

Forum Jump:

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

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