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5 Owner Maintenance MIX 56 User Manual
5-14 Telect, Inc. 122188-10 A0
5. Verify that the Checksum is zero and press Y.
The external flash is overwritten with the new file, after which, the
screen asks you to download the internal flash file.
6. Follow the procedure for your terminal (or PC running terminal
emulation software) to browse for the file and download it. The file
must already reside on the terminal or PC. Ensure the file transfer
protocol is Raw ASCII or Text.
When the file finishes downloading, the screen shows the Check-
sum of the file and asks if you want to continue.
7. Verify that the Checksum is zero and press Y.
The internal flash is overwritten with the new file:
• If the system is a nonredundant system, the system will reboot.
• If the system is a redundant system, you just updated the stand-
by card. A minor alarm is reported because the active and stand-
by cards have different software versions.
A warning message appears, stating the standby card’s flash pro-
gram has been updated, and you must now switch to the standby
card to activate a flash update to the currently active card.
If your system is a redundant system, continue as follows:
a. As the warning message instructs, press Esc to exit this screen.
The Update Flash screen reappears, and the message “***Flash
update successful***” appears on the Serial Port line.
b. Go to the System Settings screen and make the standby card the
active card (see “Specifying System Settings & M13 Card
Functions” on page 4-14).
When you do this, the auto-update feature of the software caus-
es the former active card (now the standby card) to update to the
new software from the former standby card (now the active
card). When both cards have the same software version, the mi-
nor alarm clears.
Transferring Software Versions Between Cards
This pertains to redundant systems where the standby card has a newer ver-
sion of software, but the customer prefers the older version currently on the
active card. This procedure allows the customer to transfer the older ver-
sion onto the standby and eliminate version mismatch.