: The admin moves these files into the root folder of their TFTP server.
If the phone keeps flashing "Upgrading" but never finishes, the TFTP server might not be sending the files correctly, or the files might be corrupted. cmterm7975sip942sr4zip 2021
| Firmware Version | Protocol | Key Features | | :--- | :--- | :--- | | | SIP | Signed images, DoS fixes, latest device pack compatibility | | 9.3(1)SR2 (SCCP/SIP) | SCCP/SIP | Intermediate release with critical fixes | | 9.0(2)SR1 (SIP) | SIP | Designed for CUCM 7.1, includes secure EMCC | | 8.5(3) (SIP) | SIP | Compatible with CUCM 7.1, supports up to 56 keys | | 8.4(4) (SCCP/SIP) | SCCP/SIP | Earlier release with standard SIP compliance | : The admin moves these files into the
: The master file that tells the phone which files to load. apps75.9-4-2SR4-1S.sbn : The applications application file. apps75
: Version 9.4(2) increases the footprint of the firmware; ensure your CUCM partition has enough disk space. If you'd like, I can help you with: