[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
[SOLVED] T48G reboot-Loop
Author Message
P_Hackert Offline
Junior Member
**

Posts: 8
Joined: Oct 2016
Reputation: 0
Post: #1
Exclamation [SOLVED] T48G reboot-Loop
Hello,

I updated the firmware of my T48G to 35-82.0.20
But now, after Firmware was updated, the phone is in Boot-Loop.
It initializes first and displays the "normal" screen. But no keys are working and the phone reboots. This is an endless loop. No way to get onto the phone to downgrade to old version or reinstall the rom.

Any ideas?
(This post was last modified: 09-27-2017 08:33 AM by P_Hackert.)
09-27-2017 07:10 AM
Find all posts by this user    like0    dislike0 Quote this message in a reply
P_Hackert Offline
Junior Member
**

Posts: 8
Joined: Oct 2016
Reputation: 0
Post: #2
RE: T48G reboot-Loop
OK, I resolved this issue.
It was because of the PoE power Supply only.
I let the phoe for about 30 Minutes without power and plugged in a dedicated power supply without network plugged in.
Then the phone was booting up fully and displayed the message, that no network is connected.

After that I pressed OK and connected the network. (with PoE).
As soon as the phone got it's IP address I disconnected the dedicated PSU.

Now the phone is online and stable.

Hopefully it will reboot correctly if a power loss occures. we will see.

so far -- SOLVED
09-27-2017 08:33 AM
Find all posts by this user    like0    dislike0 Quote this message in a reply
P_Hackert Offline
Junior Member
**

Posts: 8
Joined: Oct 2016
Reputation: 0
Post: #3
RE: [SOLVED] T48G reboot-Loop
OK. There is another issue with this new Firmware.
As soon as I tryed to open the LDAP Phonebook, the phone crashed
it is absolute reproduceable.

and then i need the external PSU again, with no connected Network to be able to boot the phone without the loop.

after installing then the 35.81.0.25 again the phone has no obvious problems anymore and is booting up with PoE Network onlny again.

So please review this 82.0.20 firmware! it seems to be more than a bit unstable.
09-29-2017 07:36 AM
Find all posts by this user    like0    dislike0 Quote this message in a reply
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  [SOLVED] T41S and T41P problems with backlight jeroentjed 11 9,530 02-06-2021 06:21 PM
Last Post: complex1
  T48G - When pressing a Prefix DSS key, disable switching to number pad someone1 6 14,805 08-06-2019 04:54 PM
Last Post: brourk
Information T48G Skype For Business Firmware PHXLAWFIRM 10 31,917 08-11-2016 09:07 PM
Last Post: Mr Nigel
  Reset T48G iyunus 1 4,513 08-11-2016 02:26 PM
Last Post: iyunus
  Template update not working on T48G Expansion module tas7330 2 6,599 04-28-2016 02:44 PM
Last Post: Horence
  T48G locking / login functionality cm21 3 10,799 11-11-2015 01:16 PM
Last Post: Jaques08
  T48G - Default Account robtrop 1 6,176 10-29-2015 07:41 PM
Last Post: Yealink_Michael
  T48G "Network Checking" never stops. Medryn 2 6,034 08-25-2015 04:24 PM
Last Post: Chris-LU
  T48G Call-Transfer Problem robtrop 2 5,874 07-29-2015 05:58 AM
Last Post: robtrop
  T48G - DSS-Key URL to JPEG-Image rgoerg 2 10,472 05-06-2015 11:01 AM
Last Post: osagendn

Forum Jump:


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

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