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Downgrade Cisco 8831 from 10-3-1SR2-2 to V9

Dear all,

I've a Cisco 8831 connected on a Cisco CME 10.5, and i was upgraded the Cisco 8831 firmware from v9 to 10 (with sip8831.9-3-3-TO-10-3-1-v2 firmware) and after with sip8831.10-3-1-16 version and after with sip8831.10-3-1SR2-2.

The sip8831.10-3-1-16 version is not working with CME 10.5 (don't heard sound), i want to downgrade the Cisco 8831 to V9-3-3-5 (with sip8831.9-3-3-5 firmware) but it's not working, the Cisco 8831remain in version 10-3-1SR2-2.

I also tried to lower firmware version to version 10-3-1-16, but it does not work either.

I make a reset factory default (with menu and physically) but I'm still in Version 10-3-1SR2-2.

 voice register global
 mode  cme
 source-address XXX.XXX.XXX.XXX port 5060
 max-dn 100
 max-pool 100
 load 7821 sip78xx.10-1-1SR1-4
 load 8831 sip8831.9-3-3-5
 authenticate register
 timezone 48
 time-format 24
 tftp-path flash:
 file text
 create profile sync 0066087389444034
 ntp-server XXX.XXX.XXX.XXX mode unicast
 conference hardware

voice register pool  51
 busy-trigger-per-button 1
 id mac AC44.F211.XXXX
 type 8831
 number 1 dn 51
 dtmf-relay rtp-nte
 voice-class codec 2
 username XXXXX password XXXXX

CME#sh voice register pool 51
 Pool Tag 51
Config:
  Mac address is AC44.F211.XXXX
  Type is 8831
  Number list 1 : DN 51
  Proxy Ip address is 0.0.0.0
  Current Phone load version is Cisco-CP8831G/9.3.2
  DTMF Relay is enabled, rtp-nte
  Call Waiting is enabled
  DnD is disabled
  Video is disabled
  Camera is disabled
  Busy trigger per button value is 1
  keep-conference is enabled
  registration expires timer max is 600 and min is 60
  username XXXX password XXXX
  kpml signal is enabled
  Lpcor Type is none

On the Web Interface of the 8831 i can see :

[08:21:36, 02/03/16] DeviceImageDownloadFailure DeviceName=SEPAC44F211XXXX IPAddress=xxx.xxx.xxx.xxx Method=3 FailureReason=3 Active=sip8831.10-3-1SR2-2 Inactive=sip8831.9-3-3-TO-10-3-1-v2 FailedLoadId=sip8831.9-3-3-5 Server=xxx.xxx.xxx.xxx

I make a debug TFTP on the CME and i can see :

Feb  3 18:39:21.574 pst: TFTP: Looking for sip8831.9-3-3-5.loads
Feb  3 18:39:21.574 pst: TFTP: Opened flash0:/ipphones/8831/sip8831.9-3-3-5.loads, fd 4, size 1016 for process 336
Feb  3 18:39:21.578 pst: TFTP: Finished flash0:/ipphones/8831/sip8831.9-3-3-5.loads, time 00:00:00 for process 336

Have you any idea ?

Best regard.

1 Reply 1

Josesima
Level 1
Level 1

I am having also this issue, did you solve it ?