Question about Nortel 1140E
We are trying to upgrade the nortel 1140E SIP phone from 06A4XC39 to 0625C1B. Change cfg file and sipcfg file, put in new bin file on the tftp server, when the the phone is rebooted it comes back with the error (FW failed no signature found) don't get it.
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Posted on Jan 02, 2017
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