Cisco 7975G stuck in upgrading mode

[Roger B]

                   Hello,

I am having 7975G IP phones registered in CUCM but whenever i put POE cable or power cable to power it on, it stucks to "Upgrading" and doen't go further. CUCM version is 8.6 and Device defaults of 7975 is SCCP75.9-2-1S.  I have tried doing factory reset (power off then power on # button then 123456789*0#) also but is not working. Can anyone help here?

[ronpatel]

Hi

Was it regestered to another CUCM cluster With CUCM version lesser than current one .

Regards

Ronak patel

[Roger B]

Hi,

No,it was registered with only one CUCM and now not working with the same CUCM. But how come they shows message as "upgrading" when connected through power adapter only.

[ronpatel]

Hi

They are trying to upgrade the firmware. Have you uploaded latest the firmware in CUCM?

Regards

Ronak

[Roger B]

Hi,

Why they are tring to upgrade the firmware as other phones are running on the firmware which is uploaded in CUCM.

Only three IP phones having this problem and I am unable to upload the firmware by tftp.

[ronpatel]

Hi

Might be others are at upgraded to latest firmware.

Regards

Ronak

[Roger B]

Hi,

Ok in that case, how would i come to know about the firmware of those IP phones, as they are not displaying anything on screen other than "upgrading".

[Rob Huffman]

Hi Rahul,

If you check (via the phone) Settings > Model Info > Load File you can see

what firmware is currently on the phone

Cheers!

Rob

"Everything is broken" - Bob Dylan