I understand that in order to go from 8-3-2 to 8-5-3on a 7975G I need to first jump to 8-5-2.I deleted the 8-5-3 files from the 7975 directory and copied the 8-5-2 files in there.I no longer get the “Auth Fail” message but the phones don’t update to the intermediate load either.What other settings do I need to change to get the 7975G’s phones to update with the files I have in the 7975 directory?
You will also need to modify the tftp server statements, modify the telephony server "load" statement, and create the CNF files. There is a document walking you though this process here: https://supportforums.cisco.com/docs/DOC-9815
Note For all SCCP firmware upgrades from firmware release versions earlier than 8.3(3) to version 8.5(3) or greater, you must first upgrade your firmware to version 8.5(2). Once you have upgraded to version 8.5(2), you can upgrade your IP Phone to version 8.5(3) or later.
I have found an older 7975 giving "Auth Fail" on SCCP75-8-3-2S and wont upgrade. It makes simple resets total phone outages as it tries every time to load the newer FW.
So I manually configured the TFTP-Server statements, the Telephony-Service Load statement in the IOS CLI and manually TFTPed the intermediate load (8.5(2)) to flash and it upgraded. Then I was able to use CCA PLM to load the latest phone load in SWP 8.0.3 for UC500 (8.5(3)) and then it can upgrade.
Some detailed steps...
I used solar Winds free TFTP server to TFTP the files to the UC540 flash /phones/7975 directory.
Then this CLI....
no tftp-server flash:/phones/7975/apps75.8-5-3TH1-6.sbn alias apps75.8-5-3TH1-6.sbn no tftp-server flash:/phones/7975/cnu75.8-5-3TH1-6.sbn alias cnu75.8-5-3TH1-6.sbn no tftp-server flash:/phones/7975/cvm75sccp.8-5-3TH1-6.sbn alias cvm75sccp.8-5-3TH1-6.sbn no tftp-server flash:/phones/7975/dsp75.8-5-3TH1-6.sbn alias dsp75.8-5-3TH1-6.sbn no tftp-server flash:/phones/7975/jar75sccp.8-5-3TH1-6.sbn alias jar75sccp.8-5-3TH1-6.sbn no tftp-server flash:/phones/7975/SCCP75.8-5-3S.loads alias SCCP75.8-5-3S.loads no tftp-server flash:/phones/7975/term75.default.loads alias term75.default.loads
tftp-server flash:/phones/7975/apps75.8-5-2TH1-9.sbn alias apps75.8-5-2TH1-9.sbn tftp-server flash:/phones/7975/cnu75.8-5-2TH1-9.sbn alias cnu75.8-5-2TH1-9.sbn tftp-server flash:/phones/7975/cvm75sccp.8-5-2TH1-9.sbn alias cvm75sccp.8-5-2TH1-9.sbn tftp-server flash:/phones/7975/dsp75.8-5-2TH1-9.sbn alias dsp75.8-5-2TH1-9.sbn tftp-server flash:/phones/7975/jar75sccp.8-5-2TH1-9.sbn alias jar75sccp.8-5-2TH1-9.sbn tftp-server flash:/phones/7975/SCCP75.8-5-2S.loads alias SCCP75.8-5-2S.loads tftp-server flash:/phones/7975/term75.default.loads alias term75.default.loads
telephony-service load 7975 SCCP75.8-5-2S
Then reset the phone.
Then after it completes, use CCA PLM to delete and readd the official 7975 load and reset it again.
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