How can I identify the correct firmware for my 7975?

[medzeinmaaloum]

good day

I have 10 IP Phones type 7975G, I tested the following 4 firmware on my CCME 8.6:

cmterm-7975-sccp.8-3-3

cmterm-7975-sccp.8-3-4SR1

cmterm-7975-sccp.8-3-5

cmterm-7975-sccp.8-4-2

But IP phones do not accept any.

I have downloaded all the firmware from Cisco, but they are many how can I identify the correct firmware for my IP IPnone 7975?

best regards,

[Leo Laohoo]

From the switch, "sh cdp nei detail".

[medzeinmaaloum]

Switch#sh cdp nei detail
-------------------------
Device ID: SEP203A0723B5F6
Entry address(es):
Platform: Cisco IP Phone 7945, Capabilities: Host Phone Two-port Mac Relay
Interface: GigabitEthernet1/0/26, Port ID (outgoing port): Port 1
Holdtime : 170 sec
Second Port Status: Down

Version :
SCCP45.9-4-2SR3-1S

advertisement version: 2
Duplex: full
Power drawn: 12.000 Watts
Power request id: 46582, Power management id: 2
Power request levels are:12000 0 0 0 0
Power Available TLV:

Power request id: 0, Power management id: 0, Power available: 0, Power management level: 0
Management address(es):

-------------------------
Device ID: SEP7001B5DCF2AE
Entry address(es):
Platform: Cisco IP Phone 7975, Capabilities: Host Phone Two-port Mac Relay
Interface: GigabitEthernet1/0/32, Port ID (outgoing port): Port 1
Holdtime : 159 sec
Second Port Status: Down

Version :
79XX_default_load

advertisement version: 2
Duplex: full
Power drawn: 12.000 Watts
Power request id: 62126, Power management id: 2
Power request levels are:12000 0 0 0 0
Power Available TLV:

Power request id: 0, Power management id: 0, Power available: 0, Power management level: 0
Management address(es):

-------------------------
Device ID: Router_Data_Voice
Entry address(es):
IP address: 10.40.0.1
Platform: Cisco CISCO2921/K9, Capabilities: Router Switch IGMP
Interface: GigabitEthernet1/0/1, Port ID (outgoing port): GigabitEthernet0/0
Holdtime : 151 sec

Version :
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.1(4)M4, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Tue 20-Mar-12 18:57 by prod_rel_team

advertisement version: 2
VTP Management Domain: ''
Duplex: full
Power Available TLV:

Power request id: 0, Power management id: 0, Power available: 0, Power management level: 0
Management address(es):

Switch#
Switch#

[Leo Laohoo]

On the phone, press Settings > Phone Information

[medzeinmaaloum]

There is no firmware installed in the Phone, I reset by #123456789
You can see the video

[medzeinmaaloum · Accepted solution]

Finally I found the firmware for my IP Pone 7975, after I tried so many firmware, the firmware is cmterm-7975-sccp.9-3-1SR1-1.
But the question is always asked, from a Cisco IP Phone how can we know the exact firmware?