Headline 7936 phones intermittently fails to upgrade to new load
First Found-in Version 5.0(4.1000.1)
7936 phones fail to upgrade to a different load when upgrade is attempted immediately after re-registration to CCM. This situation happens when the phones unregister first due to callmanager getting restarted or upgraded.
The 7936 phones running either cmterm_7936.3-3-1-0.bin or cmterm_7936.3-3-2-0.bin loads can fail to upgrade to new load if the phones first unregister from CCM, followed by re-registration and firmware upgrade attempt.
Change the default load on the CCM to cmterm_7936.3-3-3-0.bin or newer and upgrade the 7936 phones without stopping CCM service first.
If the phones experience this problem due to proactive workaround not performed, power cycling the phone recovers them in most cases.
This problem was fixed first to address the issue reported by CSCed26422, but the phones coming out from manufacturing were not updated to newer load, thereby increasing the chances of failure
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The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.